{"title":"Bak","description":"\u003cp\u003eShop BAK's high-performance lithium-ion cells, engineered for reliable power across consumer electronics, power tools, e-bikes, energy storage, and custom battery pack projects. As one of China's leading cylindrical cell manufacturers since 2001, BAK delivers cells with stable voltage output, excellent cycle life, and robust safety performance at competitive value. BAK cells are widely trusted by OEMs, DIY builders, and professionals worldwide.\u003c\/p\u003e\n\u003cp\u003eWe stock popular BAK grades including 18650 3.7V cells (N18650CP, N18650H), 21700 3.7V cells (N21700CG-50), high-drain models for power tools, and more. All units are genuine, in-stock, and ready to ship. Browse our collection to find the right power solution for your application.\u003c\/p\u003e","products":[{"product_id":"bak-4pcs-21700-4500mah-60a-batteryinr2170-45d-45d-high-drain-cell-for-vape-power-tools-diy","title":"4-Pack BAK INR2170-45D 21700 4500mAh 45A High Drain Flat Top Battery – For Vaping, Power Tools, Flashlights \u0026 RC","description":"\u003ch4\u003e\u003cspan class=\"\"\u003eDescription\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eExperience massive power and capacity with the BAK INR2170-45D, a premium 21700 high-drain cell engineered for extreme applications. This 4-pack delivers an enormous 4500mAh capacity and a true 45A continuous discharge, making it the ideal upgrade for high-wattage vaping, heavy-duty power tools, ultra-bright 21700 flashlights, and high-performance RC models. The flat top design ensures broad compatibility with spring-loaded contacts and simplifies spot-welding for custom battery packs. With ultra-low internal resistance and robust cycle life, the 45D provides sustained, reliable power when your device demands maximum output.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cspan class=\"\"\u003eKey Features\u003c\/span\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eGenuine BAK INR2170-45D Cell\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e – Manufactured by BAK, a leading lithium-ion producer, ensuring consistent quality, safety, and high-rate performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e4500mAh Ultra-High Capacity\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e – Significantly extends runtime compared to typical 18650 or 3000mAh 21700 cells; perfect for power-hungry devices that need long-lasting energy.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e45A Continuous Discharge (60A Pulse)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e – True 45A continuous rating handles extreme loads with ease; pulse capability up to 60A for short bursts. Ideal for power tools, sub-ohm vaping, and direct-drive flashlights.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eUltra-Low Internal Resistance (≤12mΩ)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e – Minimizes voltage sag and heat generation under load, delivering immediate throttle response and maintaining peak brightness.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eFlat Top Design\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e – Compatible with all standard 21700 spring-contact devices, chargers, and battery trays. Flat positive terminal ensures reliable spot-welding for DIY pack construction.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eExcellent Energy Density\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e – 21700 format provides a perfect balance of size, capacity, and power output, outperforming most 18650 cells in both runtime and current delivery.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e4-Pack Value\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e – Ideal quantity for dual-battery mods, rebuilding tool packs, or building high-current RC packs. Protective packaging ensures safe delivery.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cspan class=\"\"\u003eParameters\u003c\/span\u003e\u003c\/h4\u003e\n\u003cdiv class=\"ds-scroll-area ds-scroll-area--show-on-focus-within ds-scroll-area--enabled _1210dd7 c03cafe9\"\u003e\n\u003cdiv class=\"ds-scroll-area__gutters\"\u003e\n\u003cdiv class=\"ds-scroll-area__horizontal-gutter\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"ds-scroll-area__vertical-gutter\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cspan class=\"\"\u003eParameter\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan class=\"\"\u003eSpecification\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003cbr\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eModel\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eBAK INR2170-45D (N21700-45D)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eTypical Capacity\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e4500 mAh (0.2C discharge to 2.5V)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eMinimum Capacity\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e4400 mAh\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eNominal Voltage\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e3.6 V (typical operating 3.7 V)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eMax Continuous Discharge\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003e\u003cspan class=\"\"\u003e45 A\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e (cell temperature ≤ 80°C)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eMax Pulse Discharge\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e60 A (short burst, monitor temperature; not for continuous use)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eDischarge Cut-off Voltage\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e2.5 V (never over-discharge)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eStandard Charge\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eCC-CV, 0.5C (2250 mA) to 4.2 V, cut-off 50 mA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eMax Charge Current\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e1C (4500 mA); 2C fast charge possible with strict temperature control\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eInternal Resistance (AC)\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e≤ 12 mΩ (AC 1 kHz)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eInternal Resistance (DC)\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eApprox. 16–20 mΩ\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eCycle Life\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e≥ 300 cycles (to 80% capacity, 1C charge \/ 10A discharge)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eOperating Temperature (Discharge)\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e-20°C to 60°C (ensure proper cooling for sustained high current)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eStorage Voltage \/ Temperature\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e3.6–3.7 V (40–50% charge), -20°C to 25°C recommended\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eTop Type\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eFlat Top\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eDimensions\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eApprox. 21.2 mm diameter × 70.3 mm length\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eWeight (single cell)\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eApprox. 69 g\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003ePackage Includes\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e4 × BAK INR2170-45D 21700 cells in protective packaging\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003cbr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch4\u003e\u003cspan class=\"\"\u003eApplications\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eRecommended For\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eHigh-power vaping: regulated and mechanical mods, sub-ohm tanks with builds safely within 45A continuous limit.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eCordless power tools: impact drivers, drills, circular saws, and high-torque wrenches when used in properly engineered battery packs with BMS.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eHigh-output 21700 flashlights: FET-driven or multi-emitter lights requiring sustained current up to 45A for maximum brightness.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eRC models: cars, trucks, boats, and quadcopters that demand high burst current and extended runtimes.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eE-bike and e-scooter battery packs: per-cell discharge within 45A; the high capacity reduces the number of parallel cells needed.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003ePortable high-power energy storage: DIY power banks and field power supplies capable of charging laptops and high-wattage devices.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eGarden tools and portable spot welders: any high-drain application where both power and capacity are critical.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eNot Recommended For\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eLow-power, ultra-long-runtime devices (solar lights, sensors, clocks): the high-rate capability is wasted; choose a 5000mAh low-drain 21700 cell for maximum runtime.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003e18650-only devices: the 21700 format is physically larger (21mm x 70mm) and will not fit. Verify your device’s battery compartment size before purchase.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eStandard USB power banks that do not require high current: the 45A performance is unnecessary, and a lower-cost high-capacity cell would be more economical.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cspan class=\"\"\u003eFAQ\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ: Is this battery truly rated for 60A?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA: The BAK INR2170-45D has a continuous discharge rating of 45A. The 60A figure refers to a short pulse capability only. For continuous use, you must design your application to stay at or below 45A to ensure safe operation and long cell life. Operating continuously at 60A will cause overheating, severe capacity degradation, and potential safety risks.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ: Can I use this battery in my 18650 device?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA: No. This is a 21700 cell, which is approximately 21mm in diameter and 70mm in length. It is physically larger than an 18650 (18mm x 65mm) and will not fit unless your device is specifically designed for 21700. Always check your device’s specifications before ordering.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ: What is the advantage of 21700 over 18650?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA: The 21700 format offers a significant increase in energy capacity and power output without an extreme increase in size. The 45D delivers 4500mAh and 45A, whereas the best 18650 cells typically max out around 3500mAh at 10A, or 3000mAh at 35-40A. This means longer runtime and higher current capability in a single cell.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ: Does this cell have built-in protection?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA: No, the BAK INR2170-45D is an unprotected flat top cell. This allows unrestricted current flow for high-drain applications. When building multi-cell series or parallel packs, you must use an external BMS (Battery Management System) rated for at least 60A to protect against overcharge, over-discharge, and balancing issues. For single-cell use, ensure your device has its own protection mechanisms.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ: Can I solder directly onto the battery?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA: Never solder directly onto lithium-ion cell terminals. The heat can damage internal separators and safety vents, leading to permanent damage or dangerous failure. Always use a spot welder to attach nickel strips. For applications requiring wires, spot-weld nickel tabs with pre-soldered leads, or purchase pre-wired cells.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ: How should I store these batteries when not in use?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA: Store in a cool, dry place at a nominal voltage of 3.6–3.7V (approximately 40-50% state of charge). Avoid storing fully charged or fully discharged for extended periods, as this accelerates aging. Use a non-conductive battery case to prevent accidental short circuits.\u003c\/span\u003e\u003c\/p\u003e","brand":"Bak","offers":[{"title":"Default Title","offer_id":51454194385142,"sku":"OAS891","price":25.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/2753\/6886\/files\/imagesproductbak-45d-21700-4pcs_aabd51cc-38b3-479c-b363-c871a11cdfc5.webp?v=1786967280"},{"product_id":"6-pcs-original-bak-32140-15ah-3-2v-lifepo4-battery-grade-a-cells-15000mah-for-solar-rv-e-bike","title":"BAK 32140 3.2V 15Ah LiFePO4 Power Battery – 45A High-Discharge, 3000+ Cycles \u0026 Stainless Steel Safety Design for Power Tools \u0026 E-Scooters (6-Pack)","description":"\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eProduct Description:\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eThe BAK 32140 is a professional-grade 32140 lithium iron phosphate (LiFePO4) power battery engineered for extreme durability and high-energy output. \u003c\/span\u003e\u003cspan class=\"\"\u003eThis 6-pack bundle delivers a massive 15Ah (15000mAh) capacity and a powerful \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e3C (45A) continuous discharge current\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e.\u003c\/span\u003e \u003cspan class=\"\"\u003eWith an ultra-low internal resistance of just \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e≤3mΩ\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e, it ensures minimal heat generation and maximum energy efficiency even under heavy, sustained loads.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eBuilt with a reinforced stainless steel casing and an integrated reinforced explosion-proof valve, this cell offers advanced heat dissipation and rapid gas exhaust in extreme conditions, completely preventing swelling or rupture. \u003c\/span\u003e\u003cspan class=\"\"\u003eThe advanced LiFePO4 chemistry supports an industry-leading \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e3000+ cycle life\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e, far exceeding standard lithium batteries.\u003c\/span\u003e\u003cspan class=\"\"\u003e With 6 cells included, you have the perfect foundation for assembling high-performance battery packs for power tools, e-scooters, robotic vacuums, and portable energy storage.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eKey Features:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e6-Pack of Premium Power Cells:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Includes six BAK 32140 3.2V LiFePO4 batteries for professional assembly and projects.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eMassive 15Ah (15000mAh) Capacity:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Provides 15Ah of energy for extended runtimes, reducing the need for frequent recharging.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e3C (45A) High-Rate Discharge:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Delivers a powerful 45A continuous discharge current, providing explosive power for heavy-duty tools and equipment.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eUltra-Low Internal Resistance (≤3mΩ):\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Ensures minimal heat generation and maximum energy transfer efficiency during heavy use.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e3000+ Ultra-Long Cycle Life:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Advanced LiFePO4 chemistry ensures an exceptionally long service life (3000+ cycles to 80% capacity), far exceeding standard lithium batteries.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eAdvanced Safety \u0026amp; Explosion-Proof Design:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e High-strength stainless steel casing with a reinforced explosion-proof valve and heat dissipation vents.\u003c\/span\u003e\u003cspan class=\"\"\u003e Safely exhausts internal gases in extreme cases.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eComprehensive Protection:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Prevents over-charging, over-discharging, and over-current to avoid battery damage and ensure safe operation.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eProfessional Grade Quality:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Manufactured by BAK, a trusted global leader in lithium battery technology.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eProduct Parameters (Based on the Provided Spec Sheet):\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eBrand:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e BAK \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eSize:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 32140\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eModel:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 32140 LiFePO4 Power Cell\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eNominal Capacity:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 15Ah \/ 15000mAh\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eNominal Voltage:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 3.2V\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eInternal Resistance:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e ≤3mΩ\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eCharging Cut-off Voltage:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 3.65V\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eDischarge Cut-off Voltage:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 2.0V\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eContinuous Discharge Current:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 0.5C to 3C (Max 45A)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eContinuous Charging Current:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 0.2C to 1C\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eCycle Life:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e ≥ 3000 cycles (to 80% capacity retention)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eOperating Temperature - Storage:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e -10°C to 45°C\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eOperating Temperature - Charging:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e -10°C to 45°C\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eOperating Temperature - Discharging:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e -20°C to 55°C\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eDimensions:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 32mm (Diameter) ±0.10mm x 140mm (Height) ±0.15mm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eWeight:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 291g ± 5g\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003ePack Quantity:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 6-Pack\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eApplications (Based on Market Application Icons):\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eHeavy-Duty Cordless Power Tools:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Delivers sustained high-current power for high-torque drills, saws, and impact drivers.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eGarden \u0026amp; Forestry Tools:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Powers demanding equipment such as electric chainsaws, hedge trimmers, and lawn mowers.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eElectric Two-Wheelers:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Reliable power core for electric scooters, e-bikes, and lightweight electric motorcycles.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eHome \u0026amp; Industrial Cleaning Equipment:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Drives robotic vacuum cleaners and heavy-duty cordless vacuums.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eOutdoor Portable Energy Storage:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Ideal core cells for building high-capacity outdoor portable power stations and solar storage systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eFrequently Asked Questions (FAQ):\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ1: What is the advantage of the 3000+ cycle life?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA1: A 3000+ cycle life means this battery can be fully charged and discharged over 3000 times while still retaining 80% of its capacity. This is significantly higher than standard batteries (typically 500-800 cycles), providing exceptional long-term value and drastically reducing replacement costs over its lifespan.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ2: What is the 45A discharge current used for?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA2: The 45A (3C) discharge current is designed for high-drain power applications such as electric chainsaws, heavy-duty power drills, and electric scooters. It ensures the battery can deliver sustained high power without voltage sag or overheating.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ3: How does the explosion-proof safety design work?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA3: The battery features a high-strength stainless steel casing with a reinforced explosion-proof valve and heat dissipation vents. In the rare event of an internal short circuit or pressure buildup, the vents rapidly exhaust internal gases, preventing swelling or rupture.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ4: Is this battery safe to use in my electric two-wheeler?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA4: Absolutely. With a 15Ah capacity and a 45A continuous discharge rating, the BAK 32140 is an excellent and reliable choice for electric scooters and light electric vehicles. Always ensure your BMS (Battery Management System) is properly configured for 3.2V LiFePO4 cells.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ5: What kind of charger should I use for this battery?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA5: You must use a charger specifically designed for 3.2V LiFePO4 batteries with a 3.65V cut-off voltage. Do not use a standard 3.7V\/4.2V Li-ion charger, as it will overcharge and damage the battery.\u003c\/span\u003e\u003c\/p\u003e","brand":"Bak","offers":[{"title":"Default Title","offer_id":51454206607606,"sku":"OAS1024","price":85.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/2753\/6886\/files\/imagesbak-32140-15ah-6pack-box_d5ea5ac3-9f60-40c6-b436-f04203128374.webp?v=1786967837"},{"product_id":"2-pack-bak-n21700cg-50-5000mah-3-6v-high-capacity-15a-21700-lithium-ion-battery","title":"BAK N21700CG-50 21700 5000mAh 3.6V High-Capacity Li-ion Battery – 14.7A Max Discharge, 25mΩ Low IR for Power Stations \u0026 Energy Storage (2-Pack)","description":"\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eProduct Description:\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eThe BAK N21700CG-50 is a premium-grade 21700 lithium-ion battery cell engineered for high-capacity energy storage and reliable power delivery. With a true 5000mAh (4900mAh typical) capacity and a stable 3.6V nominal voltage, this cell delivers exceptional energy density, making it the ideal core for high-capacity portable power stations, solar energy storage systems, and DIY battery pack assemblies.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eManufactured by BAK, a leading global lithium battery manufacturer, this cell features ultra-low internal resistance (≤25mΩ) and proven performance under sustained loads. According to the official specification sheet, it supports a 3C (14.7A) maximum discharge current for high-power bursts, and maintains a wide operating temperature range for reliable performance in various environments. With two cells included, you have the flexibility to power a single device, rotate batteries for continuous operation, or begin building your custom battery system.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eKey Features:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eBAK N21700CG-50 High-Capacity Cell:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Premium-grade 21700 Li-ion battery from the trusted brand BAK.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e5000mAh (4900mAh Typ.) True Capacity:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Provides massive energy for extended runtimes.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e3.6V Nominal Voltage:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Stable voltage output for consistent device performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e14.7A (3C) Max Discharge Current:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Delivers high burst power for demanding applications (Note: For cycle life, standard 0.2C discharge is recommended).\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eUltra-Low Internal Resistance (≤25mΩ):\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Ensures minimal heat generation and maximum energy efficiency.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eWide Operating Temperature:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Supports charging from 0°C to 45°C and discharging from -20°C to 60°C.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eProfessional Grade Quality:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Manufactured by BAK with strict quality control and rigorous testing.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eVersatile Applications:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Perfect for portable power stations, solar storage, and DIY battery projects.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eProduct Parameters (Based on the Provided Spec Sheet):\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eBrand:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e BAK \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eModel:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e N21700CG-50\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eSize:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 21700\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eTypical Capacity:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 4900mAh \/ 5000mAh (Typical)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eNominal Voltage:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 3.6V\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eCharging Limited Voltage:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 4.20V\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eStandard Charging Current:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 0.5C (2450mA)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eMax Charging Current:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 1C (4900mA)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eStandard Discharge Current:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 0.2C (980mA)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eMax Discharge Current:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 3C (14.7A) – \u003c\/span\u003e\u003cem\u003e\u003cspan class=\"\"\u003eNot for cycle life; for burst usage only.\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eDischarge Cut-off Voltage:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 2.50V (Standard) \/ 2.00V (Absolute)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eInternal Resistance:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e ≤25mΩ (AC Impedance, 1000Hz)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eWeight:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e ≤70g (Measured: ~68.2g)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eOperating Temp - Charging:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 0°C to 45°C\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eOperating Temp - Discharging:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e -20°C to 60°C\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eStorage Temp:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e -20°C to 45°C (1-year recommend)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eDimensions:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 21.40mm (Max Diameter) x 70.75mm (Max Height)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003ePack Quantity:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 2-Pack\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eApplications:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eHigh-Capacity Portable Power Stations:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e The ideal core cell for building large-capacity outdoor camping power stations and emergency backup power.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eSolar Energy Storage Systems:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Reliable, high-capacity energy storage for off-grid solar setups and home backup systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eHigh-Performance LED Flashlights:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Powers high-lumen searchlights and tactical flashlights for extended outdoor operations.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eDIY Battery Pack Assemblies:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Perfect for building custom 12V\/24V battery packs for various DIY projects.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eElectric Vehicle Conversions:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Delivers long-lasting, stable power for retrofitting e-bikes and electric scooters.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eFrequently Asked Questions (FAQ):\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ1: What is the discharge current of this battery?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA1: According to the official spec sheet, this cell supports a \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e3C (14.7A) maximum discharge current\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e. However, please note that the spec sheet explicitly states \"3C max discharge, not for cycle life.\" For daily use and maximizing cycle life, we recommend using a standard 0.2C (980mA) discharge.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ2: What is the typical capacity of this battery?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA2: The BAK N21700CG-50 has a typical capacity of 4900mAh, with a maximum rated capacity of 5000mAh. This provides massive energy for extended runtimes in high-drain applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ3: What kind of charger should I use for this battery?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA3: You must use a charger specifically designed for 3.6V\/3.7V Li-ion batteries with a 4.2V cut-off voltage. We recommend using a high-quality smart charger with over-charge protection.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ4: Is this battery safe for use in high temperatures?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA4: Yes. The spec sheet indicates a wide operating temperature range: discharging from -20°C to 60°C, and charging from 0°C to 45°C.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ5: Can I use this battery to build a 12V battery pack?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA5: Yes. For a standard 12V system, you would connect 3 cells in series (3S) to achieve 10.8V nominal (3.6V x 3). Always use a BMS (Battery Management System) when building custom packs to ensure safety and balance.\u003c\/span\u003e\u003c\/p\u003e","brand":"Bak","offers":[{"title":"Default Title","offer_id":51454206935286,"sku":"OAS1029","price":16.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/2753\/6886\/files\/bak-n21700cg-50-2pack-flat-front_2b988575-affc-44c9-9f93-f64f5c14180a.webp?v=1786967848"},{"product_id":"2pcs-bak-26650hc-4500mah-26650-3-7v-li-ion-battery-20a-high-discharge-for-vape-flashlight-diy","title":"BAK 26650HC 3.7V 4500mAh 5C High-Drain Li-ion Battery – 20A Discharge for High-Power Flashlights \u0026 Power Tools (2pcs)","description":"\u003ch2 class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eProduct Description:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eThe BAK 26650HC is a premium-grade 26650 lithium-ion battery engineered for reliable high-drain performance. This \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e2pcs\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e bundle delivers a true 4500mAh capacity and a powerful \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e5C (20A) discharge rate\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e, providing sustained, high-current power for demanding devices such as high-lumen tactical flashlights, cordless power tools, and portable energy systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eBuilt with advanced Li-ion chemistry and manufactured by BAK, a global leader in battery technology, this cell offers excellent energy density, low internal resistance, and consistent performance under heavy loads. It is the ideal choice for users who demand both high capacity and reliable power output.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eKey Features:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h2\u003e\u003cbr\u003e \u003cbr\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan class=\"\"\u003eBAK 26650HC Premium Power Cell:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e High-quality 26650 Li-ion battery from the trusted brand BAK.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e4500mAh True Capacity:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Provides reliable, non-inflated 4500mAh energy for extended runtimes.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e5C (20A) High Discharge Rate:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Delivers a stable 20A continuous discharge current for high-power applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eExcellent Energy Density:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Packing high capacity into a compact 26650 form factor.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eProven Battery Technology:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Manufactured by BAK with advanced Li-ion chemistry for consistent and reliable performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eStandard 26650 Size:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Perfectly fits standard 26650 battery compartments (26mm x 65mm).\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eVersatile Applications:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Ideal for high-power flashlights, power tools, and DIY battery packs.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eTechnical Parameters (Per Cell)\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cdiv class=\"ds-scroll-area ds-scroll-area--show-on-focus-within _1210dd7 c03cafe9\"\u003e\n\u003cdiv class=\"ds-scroll-area__gutters\"\u003e\n\u003cdiv class=\"ds-scroll-area__horizontal-gutter\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"ds-scroll-area__vertical-gutter\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003cbr\u003e\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003cbr\u003e\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003cbr\u003e\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003cbr\u003e\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003cbr\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand \/ Model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBAK 26650HC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChemistry\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLi-ion (NMC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.7V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTypical Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4500mAh \/ 4.5Ah\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMinimum Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4400mAh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal Energy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e16.65Wh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax.\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003cbr\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003cbr\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003cbr\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003cbr\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eContinuous Discharge\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20A\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eMax.\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePulse Discharge (＜10s)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~35A\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eStandard Charge Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.5A (0.33C)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eMax.\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eCharge Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.5A (1C)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eCharge Cut-off Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.20V ±0.05V (CC\/CV)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eDischarge Cut-off Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.5V\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eInternal Resistance (AC 1kHz)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤18mΩ (typical)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eCycle Life (@ 1C CD, 100% DoD)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≥300 cycles to 70% residual capacity\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eCell Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e26.2 ± 0.3 mm\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eCell Height (Flat Top)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e65.3 ± 0.3 mm\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~93g\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eTop Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFlat Top\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eProtection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNone (PTC thermistor \u0026amp; safety vent only)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eCharge Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0°C ~ 45°C\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eDischarge Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-20°C ~ 60°C\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eStorage Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-20°C ~ 35°C (recommend +15°C ~ +25°C)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eCertifications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUN38.3, MSDS, IEC62133\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePackaging\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 × BAK 26650HC cells (voltage-matched)\u003c\/td\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003cbr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch2 class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eApplications:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eHigh-Lumen Tactical Flashlights:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Powers the brightest flashlights and searchlights with sustained 20A output.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eCordless Power Tools:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Provides reliable high-current power for electric drills and small power tools.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003ePortable Power Stations:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e A solid core cell for building custom portable power banks.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eOutdoor \u0026amp; Camping Gear:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Long-lasting power for headlamps and portable outdoor radios.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eDIY Battery Pack Assembly:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Ideal for building custom 12V\/24V battery packs.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eFrequently Asked Questions (FAQ):\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ1: What is the discharge current of this battery?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA1: This BAK 26650HC is rated for a 5C discharge rate, which equates to a stable \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e20A continuous discharge current\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e (4500mAh × 5C), making it suitable for high-power applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ2: Is this a genuine BAK battery?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA2: Yes. We source directly from authorized channels to ensure you receive 100% genuine BAK 26650HC cells.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ3: What kind of charger should I use for this battery?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA4: You must use a charger specifically designed for 3.6V\/3.7V Li-ion batteries with a 4.2V cut-off voltage. Do not use a standard AA\/AAA Ni-MH charger.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ4: Can I use this battery in series?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA5: Yes, you can use these batteries in series to build custom battery packs. However, always ensure your BMS (Battery Management System) is properly rated for the total current draw.\u003c\/span\u003e\u003c\/p\u003e","brand":"Bak","offers":[{"title":"Default Title","offer_id":51454208803062,"sku":"OAS1077","price":13.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/2753\/6886\/files\/bak-26650hc-4500mah-2pack_89a34b52-5ac2-4281-bc29-c167dfd75efb.webp?v=1786967985"},{"product_id":"bak-26650hc2e-5000mah-3-7v-26650-battery-25a-high-drain-rechargeable-li-ion-cell-flat-top","title":"BAK 26650HC2E 3.7V 5000mAh 25A High-Drain Li-ion Battery – 5C Discharge, 18Wh Energy for High-Power Flashlights \u0026 Power Tools (2pcs)","description":"\u003ch2 class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eProduct Description:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eThe BAK 26650HC2E is a premium-grade 26650 lithium-ion battery engineered for high-capacity, high-drain power applications. This \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e2pcs\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e bundle delivers a massive 5000mAh (18.0Wh) true capacity and a powerful \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e25A (5C) continuous discharge current\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e, providing sustained, high-current power for the most demanding devices such as high-lumen tactical flashlights, heavy-duty cordless power tools, and high-capacity portable energy systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eProduct Description:\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eThe BAK 26650HC2E is a premium-grade 26650 lithium-ion battery engineered for high-capacity, high-drain power applications. This \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e2pcs\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e bundle delivers a massive 5000mAh (18.0Wh) true capacity and a powerful \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e25A (5C) continuous discharge current\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e, providing sustained, high-current power for the most demanding devices such as high-lumen tactical flashlights, heavy-duty cordless power tools, and high-capacity portable energy systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eManufactured by BAK, a global leader in battery technology, this cell offers excellent energy density, low internal resistance, and reliable performance under sustained heavy loads. It represents the perfect balance between ultra-high capacity and powerful discharge performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eKey Features:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eBAK 26650HC2E Premium Power Cell:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e High-capacity, high-drain 26650 Li-ion battery from the trusted brand BAK.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e5000mAh (18.0Wh) High Capacity:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Provides massive energy for extended runtimes.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e25A (5C) High Discharge Rate:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Delivers a powerful 25A continuous discharge current for demanding high-power applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eExcellent Energy Density:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Packs 18.0Wh of energy into a compact 26650 form factor.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eProven Battery Technology:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Manufactured by BAK with advanced Li-ion chemistry for consistent and reliable performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eStandard 26650 Size:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Perfectly fits standard 26650 battery compartments (26mm x 65mm).\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eVersatile Applications:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Ideal for high-power flashlights, heavy-duty power tools, and DIY battery packs.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e Technical Parameters (Per Cell)\u003c\/h3\u003e\n\u003cdiv class=\"ds-scroll-area ds-scroll-area--show-on-focus-within _1210dd7 c03cafe9\"\u003e\n\u003cdiv class=\"ds-scroll-area__gutters\"\u003e\n\u003cdiv class=\"ds-scroll-area__horizontal-gutter\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"ds-scroll-area__vertical-gutter\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003cbr\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand \/ Model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBAK 26650HC2E\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChemistry\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLi-ion (NMC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.7V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTypical Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5000mAh \/ 5.0Ah\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMinimum Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4900mAh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal Energy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e18.5Wh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax. Continuous Discharge\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax. Pulse Discharge (＜10s)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e35A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStandard Charge Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.5A (0.5C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax. Charge Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5.0A (1C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCharge Cut-off Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.20V ±0.05V (CC\/CV)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDischarge Cut-off Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInternal Resistance (AC 1kHz)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤15mΩ (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCycle Life (@ 1C CD, 100% DoD)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≥300 cycles to 70% residual capacity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCell Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e26.2 ± 0.3 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCell Height (Flat Top)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e65.3 ± 0.3 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~95g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTop Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFlat Top\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProtection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNone (PTC thermistor \u0026amp; safety vent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCharge Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0°C ~ 45°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDischarge Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-20°C ~ 60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStorage Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-20°C ~ 35°C (recommend +15°C ~ +25°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCertifications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUN38.3, MSDS, IEC62133\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003cbr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch2 class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eApplications:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eHigh-Lumen Tactical Flashlights:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Powers the brightest flashlights and searchlights with sustained 25A output.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eHeavy-Duty Cordless Power Tools:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Provides reliable high-current power for heavy-duty drills, saws, and impact drivers.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eHigh-Capacity Portable Power Stations:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e A core cell for building professional-grade portable power stations and energy storage systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eOutdoor \u0026amp; Camping Gear:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Long-lasting power for headlamps, camping lanterns, and portable outdoor radios.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eDIY Battery Pack Assembly:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Ideal for building custom 12V\/24V high-capacity battery packs.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eFrequently Asked Questions (FAQ):\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\n\u003cstrong\u003e\u003cspan class=\"\"\u003eQ1: What is the discharge current of this battery?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA1: This BAK 26650HC2E is rated for a \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e25A continuous discharge current\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e, providing high power for high-demand applications such as heavy-duty power tools and high-lumen flashlights.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\n\u003cstrong\u003e\u003cspan class=\"\"\u003eQ2: What is the energy capacity of this battery?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA2: This battery delivers a massive 5000mAh capacity, which translates to \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e18.0Wh of total energy\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e, providing significantly longer runtimes than standard 4500mAh cells.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\n\u003cstrong\u003e\u003cspan class=\"\"\u003eQ3: Is this a genuine BAK battery?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA3: Yes. The \"26650HC2E\" marking and BAK's signature teal wrapper are authentic indicators of genuine BAK cells.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\n\u003cstrong\u003e\u003cspan class=\"\"\u003eQ4: What kind of charger should I use for this battery?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA4: You must use a charger specifically designed for 3.6V\/3.7V Li-ion batteries with a 4.2V cut-off voltage. Do not use a standard AA\/AAA Ni-MH charger.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\n\u003cstrong\u003e\u003cspan class=\"\"\u003eQ5: Can I use this battery in series?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA5: Yes, you can use these batteries in series to build custom battery packs. However, always ensure your BMS (Battery Management System) is properly rated for the 25A current draw.\u003c\/span\u003e\u003c\/p\u003e","brand":"Bak","offers":[{"title":"Default Title","offer_id":51454208835830,"sku":"OAS1078","price":14.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/2753\/6886\/files\/bak-26650hc2e-5000mah-flat-top_8aa1734d-aa83-4313-9ea2-d2786c4e6af1.webp?v=1786967996"},{"product_id":"40-pack-bak-26650pc-2500mah-3-2v-lifepo4-battery-15c-high-rate-rechargeable-cell-flat-top","title":"BAK IFR26650PC 3.2V 2500mAh 15C High-Discharge LiFePO4 Battery – 2000 Cycles, 8.0Wh Energy for Industrial Power \u0026 Solar Storage (40pcs Bulk Pack)","description":"\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eProduct Description:\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eThe BAK IFR26650PC is a premium-grade 26650 lithium iron phosphate (LiFePO4) battery engineered for high-power, long-life industrial applications. This \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e40pcs bulk pack\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e delivers a reliable 2500mAh (8.0Wh) capacity and a powerful \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e15C high-discharge rate\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e, providing sustained, stable power for demanding equipment such as emergency power systems, solar storage, and industrial safety devices.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eManufactured by BAK, a global leader in battery technology, this cell features advanced LiFePO4 chemistry with exceptional thermal stability. It supports an ultra-long 20\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e00-cycle lifespan\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e (maintaining ≥70% capacity after 2000 cycles), zero memory effect, and built-in PTC and explosion-proof valve protection for enhanced safety. It is CE, MSDS, UN38.3, and UL certified, ensuring safe global shipping and compliance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eKey Features:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eBAK IFR26650PC Premium Industrial Cell:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e High-quality 26650 LiFePO4 battery from the trusted brand BAK.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e2500mAh (8.0Wh) Capacity:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Provides reliable energy for extended runtimes.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e15C High-Discharge Rate:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Delivers powerful, high-current output for demanding industrial applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e2000+ Ultra-Long Cycle Life:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Maintains ≥70% of its original capacity even after 2000 full cycles.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eAdvanced LiFePO4 Safety Chemistry:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Superior thermal stability, explosion-proof valve, and PTC over-charge\/over-discharge protection.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eZero Memory Effect:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Allows convenient top-up charging at any time without capacity loss.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eInternational Safety Certifications:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e CE, MSDS, UN38.3, and UL certified.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eStandard 26650 Size:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Perfectly fits standard 26650 battery compartments (26mm x 65mm).\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e40pcs Bulk Industrial Pack:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Ideal for large-scale OEM manufacturing, industrial assembly, and commercial energy projects.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eProduct Parameters (Based on Specs \u0026amp; Markings):\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eBrand:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e BAK\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eModel:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e IFR26650PC\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eSize:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 26650\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eCapacity:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 2500mAh\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eEnergy:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 8.0Wh\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eNominal Voltage:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 3.2V\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eDischarge Rate:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 15C\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eChemistry:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e LiFePO4 (Lithium Iron Phosphate)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eCycle Life:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e ≥ 2000 cycles (≥70% retention after 2000 cycles)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eSafety Features:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e PTC protection, Over-charge\/Over-discharge protection, Built-in explosion-proof valve\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eOperating Temp - Charging:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 0°C to 45°C\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eOperating Temp - Discharging:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e -20°C to 60°C\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eStorage Temp:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e -20°C to 45°C\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eWeight:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 92g\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eDimensions:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 26mm (Diameter) x 65mm (Height)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003ePack Quantity:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 40pcs\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eApplications:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eEmergency Lighting \u0026amp; Safety Equipment:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Reliable backup power for mining lamps, safety alarms, and emergency exit lighting.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eSolar Energy Storage:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e High-cycle, long-life storage for off-grid solar systems and household power banks.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003ePortable Power Stations:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Ideal core cell for building durable, high-discharge portable power stations.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eIndustrial Machinery \u0026amp; Robotics:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Reliable power for automated guided vehicles (AGVs) and industrial robotics.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eMedical \u0026amp; Security Devices:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Stable power for portable medical equipment, surveillance cameras, and security systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eFrequently Asked Questions (FAQ):\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ1: What is the advantage of the 2000-cycle lifespan?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA1: This LiFePO4 cell is designed to retain \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e≥70% of its original capacity even after 1500 full charge\/discharge cycles\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e. This far exceeds standard lithium-ion batteries, offering exceptional long-term value and reducing replacement costs.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ2: What is the discharge rate of this battery?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA2: This BAK IFR26650PC supports a \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e15C high-discharge rate\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e, making it ideal for high-current applications such as emergency power, industrial tools, and high-performance lighting.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ3: Is this battery safe for large-scale storage projects?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA3: Absolutely. It features built-in PTC protection, over-charge\/over-discharge protection, and an integrated explosion-proof valve. It is also CE, MSDS, UN38.3, and UL certified, meeting the highest safety standards for industrial use.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ4: What kind of charger should I use for this battery?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA4: You must use a charger specifically designed for 3.2V LiFePO4 batteries with a 3.65V cut-off voltage. Do not use a standard 3.7V\/4.2V Li-ion charger.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ5: Why is this product sold as a 40pcs bulk pack?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA5: The 40pcs pack is specifically designed for industrial and commercial buyers, including OEM manufacturers, battery pack assembly companies, and large-scale energy projects requiring consistent, high-quality bulk cells.\u003c\/span\u003e\u003c\/p\u003e","brand":"Bak","offers":[{"title":"Default Title","offer_id":51454210113782,"sku":"OAS1097","price":178.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/2753\/6886\/files\/bak-26650pc-2500mah-40pack_a21afe8d-a524-4b89-b7ae-3305b3ea48db.webp?v=1786968055"},{"product_id":"bak-2-pack-21700-full-tab-5000mah-50a-high-drain-li-ion-battery-n21700cg-50d","title":"BAK 21700 50D 5000mAh 3.7V High-Drain Battery – Tabless Technology, 4mΩ Ultra-Low IR, -40°C to 60°C Wide Temperature for High-Power Devices (2pcs)","description":"\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eProduct Description:\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eThe BAK 21700 50D is a next-generation high-drain lithium-ion battery engineered with advanced \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003etabless technology\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e. This 2pcs bundle delivers a massive 5000mAh capacity, an ultra-low internal resistance of just \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e4mΩ\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e, and a wide operating temperature range from \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e-40°C to 60°C\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e. It sets a new standard for 21700 performance, providing explosive power and exceptional reliability even in extreme cold environments.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eUnlike traditional cells that use threaded or spiral-welded negative terminals, the BAK 50D features a unique spot-welded negative terminal design. This advanced manufacturing process contributes to its ultra-low resistance and superior performance. With its wide temperature range, it is the ultimate power source for high-power devices, cold-weather flashlights, electric tools, and outdoor equipment.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eKey Features:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eBAK 21700 50D Premium Cell:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Next-generation high-drain Li-ion battery with advanced tabless technology.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e5000mAh High Capacity:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Provides massive energy for extended runtimes.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eUltra-Low Internal Resistance (4mΩ):\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Ensures minimal heat generation and maximum power transfer efficiency.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eWide Operating Temperature (-40°C to 60°C):\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Delivers reliable performance in extreme cold and hot environments, perfect for northern winters.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eAdvanced Tabless Technology:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Newer tabless design offers lower internal resistance and better performance compared to traditional spiral-welded cells.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eUnique Spot-Welded Negative Terminal:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Features a spot-welded imprint at the negative terminal, a distinct mark of its advanced manufacturing process.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eStandard 21700 Size:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Perfectly fits standard 21700 battery compartments (21mm x 70mm).\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eVersatile Applications:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Ideal for high-power flashlights, electric tools, drones, and outdoor gear.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eProduct Parameters:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eBrand:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e BAK \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eModel:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 50D\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eSize:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 21700\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eCapacity:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 5000mAh\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eNominal Voltage:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 3.7V\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eFull Charge Voltage:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 4.2V\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eInternal Resistance:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Approx. 4mΩ (Tested at low temperature)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eChemistry:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Li-ion (Lithium Ion)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eOperating Temperature:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e -40°C to 60°C\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eNegative Terminal:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Spot-welded imprint (Non-threaded\/Non-spiral)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eDimensions:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 21mm (Diameter) x 70mm (Height)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003ePack Quantity:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e 2pcs\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eApplications:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eHigh-Power Tactical Flashlights:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Powers the brightest flashlights and searchlights with extreme 4mΩ low internal resistance.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eCold-Weather Outdoor Gear:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Ideal for outdoor equipment and power tools used in extreme cold environments.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eHigh-Performance Drones \u0026amp; RC Hobbies:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Provides sustained high-current power for heavy-lift drones and RC vehicles.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eCordless Power Tools:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Delivers high-power output for demanding power tools and electric drills.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eProfessional Industrial Equipment:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Reliable power for industrial applications requiring high discharge and wide temperature tolerance.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eFrequently Asked Questions (FAQ):\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ1: What is the advantage of tabless technology?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA1: Tabless technology eliminates the traditional spiral or threaded connections, resulting in significantly lower internal resistance. For the BAK 50D, this translates to an ultra-low 4mΩ IR, which means less heat generation and more power delivered to your device.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ2: What is the operating temperature range of this battery?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA2: The BAK 50D has an impressive operating temperature range of \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e-40°C to 60°C\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e. This makes it the ideal choice for devices used in extreme cold environments, such as northern winters or high-altitude operations.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ3: Is the 5000mAh capacity real?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA3: Yes. The BAK 50D delivers a true 5000mAh capacity, providing reliable, long-lasting energy for high-drain devices.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ4: How does the negative terminal differ from traditional batteries?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA4: Unlike traditional batteries that use threaded or spiral-welded negative terminals, the BAK 50D features a \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003espot-welded imprint\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e at the negative terminal. This advanced manufacturing technique is a hallmark of its superior engineering.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ5: What kind of charger should I use for this battery?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA5: You must use a charger specifically designed for 3.6V\/3.7V Li-ion batteries with a 4.2V cut-off voltage. Do not use a standard AA\/AAA Ni-MH charger.\u003c\/span\u003e\u003c\/p\u003e","brand":"Bak","offers":[{"title":"Default Title","offer_id":51454210441462,"sku":"OAS1103","price":15.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/2753\/6886\/files\/bak-n21700cg-50d-21700-fulltab-2pack-front_4f1dd6bc-9d7f-46ee-85bd-bf6e3494ca40.webp?v=1786968077"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/2753\/6886\/collections\/BAK.jpg?v=1786675896","url":"https:\/\/oneandes.com\/collections\/bak.oembed","provider":"OneAndes","version":"1.0","type":"link"}