{"product_id":"samsung-2pack-25s-3-6v-flat-top-real-5000mah-battery-flat-top-25a-rechargeable-for-flashlight-headlamp","title":"2Pack Samsung 50S 21700 Battery - 5000mAh 25A High Capacity High Drain (INR21700-50S)","description":"\u003ch3\u003e\u003cspan class=\"\"\u003eProduct Description\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eExperience the perfect balance of power and endurance with the \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e2Pcs Samsung 50S 21700 Battery\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e (Model: INR21700-50S). Engineered to bridge the gap between high capacity and high discharge, this 21700 lithium-ion cell delivers an impressive \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e5000mAh capacity\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e alongside a robust \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e25A continuous discharge\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e (50A pulse). Whether you are building a high-performance e-bike battery pack, upgrading your power tools, or powering a tactical high-lumen flashlight, the Samsung 50S provides the energy density you need without sacrificing power output. This listing includes \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003etwo individual cells\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e (not pre-assembled), giving you the flexibility to build custom configurations in series or parallel for your specific project requirements. The 2-pack offers excellent value, providing enough cells for a small battery pack upgrade or replacement of worn-out cells in your existing devices.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"\"\u003eKey Features\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eHigh Capacity + High Drain (5000mAh + 25A):\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Offers the perfect balance. Enjoy 5000mAh of runtime with 25A continuous discharge, making it ideal for devices that need both long runtime and sustained 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=\"\"\u003eRobust 25A Continuous Discharge:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Delivers consistent, stable power under heavy loads without significant voltage sag or overheating. Supports up to 50A pulse discharge for short bursts of high demand.\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 5000mAh Capacity:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Provides 25% more capacity than standard high-drain cells (like the 40T), significantly extending your device's runtime between charges.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eAuthentic Samsung Quality:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Premium-grade INR21700-50S cells with excellent cycle life, safety certifications, and reliable voltage stability.\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 Standard flat top configuration, compatible with most battery holders, spring-loaded contacts, and DIY battery pack builds.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e2-Piece Value Pack:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Supplied as two individual cells, allowing you to replace worn-out cells in pairs, build a 1S2P (parallel), 2S1P (series), or other custom configurations to achieve your desired voltage and capacity.\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 Performance:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Suitable for both high-drain applications (power tools, e-bikes) and long-run applications (flashlights, portable stations).\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan class=\"\"\u003eTechnical Parameters\u003c\/span\u003e\u003c\/h3\u003e\n\u003cdiv class=\"ds-scroll-area ds-scroll-area--show-on-focus-within _1210dd7 c03cafe9\"\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=\"\"\u003eValue\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eBrand \u0026amp; Model\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eSamsung INR21700-50S\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eBattery Type\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eLithium-Ion (Li-Ion)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eSize\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e21700 (Diameter 21mm, Height 70mm)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eCapacity\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e5000mAh (Minimum 4900mAh)\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=\"\"\u003e3.6V\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eFull Charge Voltage\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e4.2V\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eCut-off Voltage\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e2.5V\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eContinuous Discharge Current\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e25A\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003ePulse Discharge Current\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eUp to 50A (not for continuous use)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003ePositive Terminal\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=\"\"\u003eProtection Circuit\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eNo (Unprotected Flat Top Cell)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eQuantity in Package\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e2 Pcs\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3\u003e\u003cspan class=\"\"\u003eApplications\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eElectric Bikes (E-Bikes) \/ E-Scooters \/ E-Skateboards:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Building high-performance battery packs that balance acceleration with long range. Two cells can serve as a starter pack or replacement for worn-out cells in an existing pack.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003ePower Tools:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Upgrading cordless drills, impact wrenches, angle grinders, and saws for both heavy-duty work and extended run time. Perfect for replacing old cells in a 2-cell tool battery.\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-Power Flashlights:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Powering high-lumen tactical flashlights, searchlights, and headlamps with sustained brightness. Many tactical flashlights use two 21700 cells in series for higher voltage.\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 Packs:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Creating custom 1S2P, 2S1P, or 2S2P battery banks for robotics, drones, or 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=\"\"\u003eHigh-Performance RC Models:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Suitable for 1\/8th or 1\/10th scale buggies\/truggies and drones requiring high current spikes.\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 Building compact yet powerful battery banks for camping, emergency power, or off-grid applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan class=\"\"\u003eFAQ\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ1: Does '2Pcs' mean it's a 2S battery pack assembled together?\u003c\/span\u003e\u003c\/strong\u003e \u003cbr\u003e\u003cspan class=\"\"\u003eA: No. \"2Pcs\" means you will receive \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003etwo separate individual cells\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e. You will need to assemble them in series, parallel, or a specific configuration based on your device's requirements.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ2: What is the difference between Samsung 50S, 50E, and 40T?\u003c\/span\u003e\u003c\/strong\u003e \u003cbr\u003e\u003cspan class=\"\"\u003eA: The 50S is the \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003ebalanced choice\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e. It has the same 5000mAh capacity as the 50E but with a much higher 25A continuous discharge (vs 9.8A on 50E). Compared to the 40T, it has 1000mAh more capacity but slightly lower continuous discharge (25A vs 35A). Choose 50S if you need \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eboth long runtime and good power output\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e.\u003c\/span\u003e\u003c\/p\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\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cspan class=\"\"\u003eModel\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan class=\"\"\u003eCapacity\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan class=\"\"\u003eContinuous Discharge\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan class=\"\"\u003eBest For\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e40T\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e4000mAh\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e35A\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eHigh power (power tools, heavy e-bikes)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e50E\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e5000mAh\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e9.8A\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eLong runtime (flashlights, camping)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e50S\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e5000mAh\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e25A\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eBalanced (e-bikes, medium power tools)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ3: Can I use these two cells to build a battery pack for my E-Bike?\u003c\/span\u003e\u003c\/strong\u003e \u003cbr\u003e\u003cspan class=\"\"\u003eA: A single 3.6V cell (or two cells) is not enough for an e-bike (which typically requires 36V, 48V, or 52V). Two cells can be combined in series to create a 7.2V pack, which is suitable for small devices like some flashlights or RC models. For an e-bike, you need many more cells wired in series. Always consult a professional if you are unsure.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ4: Does this battery have a protection circuit (PCB\/BMS) built-in?\u003c\/span\u003e\u003c\/strong\u003e \u003cbr\u003e\u003cspan class=\"\"\u003eA: No. The Samsung 50S is an \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eunprotected flat-top\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e cell. It relies on the external device or a BMS (Battery Management System) to handle overcharge, over-discharge, and short-circuit protection.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ5: What charger should I use?\u003c\/span\u003e\u003c\/strong\u003e \u003cbr\u003e\u003cspan class=\"\"\u003eA: Use a dedicated intelligent Li-Ion charger designed for 3.6V\/4.2V cells. Ensure the charger supports the correct voltage for your specific pack setup (e.g., 1S charger for single cells, 2S charger for 2 cells in series, etc.).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ6: How do I identify positive and negative terminals?\u003c\/span\u003e\u003c\/strong\u003e \u003cbr\u003e\u003cspan class=\"\"\u003eA: The \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eflat top\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e (the side with the Samsung logo and model number) is the \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003ePositive (+) terminal\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e. The \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003ebottom\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e (the side with the shiny metal casing and a slight indentation) is the \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eNegative (-) terminal\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e.\u003c\/span\u003e\u003c\/p\u003e","brand":"Samsung","offers":[{"title":"Default Title","offer_id":51454100635894,"sku":"OAS176","price":18.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/2753\/6886\/files\/samsung-25S-2pack-5000mAh-25A-main_76f96ec0-b3ad-4ab1-9c6e-884fbfa61641.webp?v=1786965278","url":"https:\/\/oneandes.com\/products\/samsung-2pack-25s-3-6v-flat-top-real-5000mah-battery-flat-top-25a-rechargeable-for-flashlight-headlamp","provider":"OneAndes","version":"1.0","type":"link"}