{"product_id":"21700-lifepo4-3000mah-3-2v-3c-cell-high-discharge-rate-lithium-iron-phosphate-for-solar-diy-12v-24v-packs","title":"21700 LiFePO4 3000mAh 3.2V 3C Cell – High Discharge Rate Lithium Iron Phosphate for Solar, DIY 12V\/24V Packs","description":"\u003ch3\u003e📝 Description\u003c\/h3\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e⚡ \u003cstrong\u003e21700 LiFePO4 3000mAh 3.2V 3C – The High‑Discharge Cell That Takes Your Solar \u0026amp; 12V\/24V Projects to the Next Level!\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003eWhen your solar storage or DIY battery pack demands \u003cstrong\u003ereal current on demand\u003c\/strong\u003e, the \u003cstrong\u003e21700 3.2V 3000mAh 3C LiFePO4\u003c\/strong\u003e cell steps up. This isn’t a slow‑and‑steady energy cell; it’s a \u003cstrong\u003ehigh‑discharge\u003c\/strong\u003e workhorse that pours out a continuous \u003cstrong\u003e9 amps (3C)\u003c\/strong\u003e and bursts up to \u003cstrong\u003e15 amps (5C)\u003c\/strong\u003e — enough to start a 12V water pump, ride out an inverter surge, or keep a 24V LED floodlight blazing without a flicker of voltage sag. And it does all this while delivering the \u003cstrong\u003eabsolute safety\u003c\/strong\u003e and \u003cstrong\u003ebrutal longevity\u003c\/strong\u003e that only lithium iron phosphate can offer.\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e🔋 Each cell packs a genuine \u003cstrong\u003e3,000mAh\u003c\/strong\u003e (9.6Wh) at a rock‑steady 3.2V nominal. Stack four in series and you instantly have a \u003cstrong\u003e12.8V 3Ah (38.4Wh) compact battery\u003c\/strong\u003e — the perfect size for a small solar garden light array, a portable router UPS, or a lightweight camping power box. String eight together for a \u003cstrong\u003e25.6V 3Ah (76.8Wh) pack\u003c\/strong\u003e that drives 24V inverters, 3D printers, or industrial sensors. With the 3C discharge rating, you can pull \u003cstrong\u003e9A continuously\u003c\/strong\u003e from even a single 4S string — no need to parallel a dozen cells just to start your equipment.\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e🛡️ LiFePO4 is the only lithium chemistry that’s truly \u003cstrong\u003enon‑explosive, non‑toxic, and immune to thermal runaway\u003c\/strong\u003e. Build your battery into a wooden cabinet, a plastic toolbox, or your vehicle’s storage bay — it will never catch fire, vent gas, or leak acid. And with \u003cstrong\u003e≥2,000 deep‑cycle lifespan\u003c\/strong\u003e (to 80% capacity), this cell will still be delivering dependable power years after you’ve replaced your inverter and charge controller. Daily cycling for five years? Easy. Weekend use for a decade? No sweat.\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e⚙️ Every cell is a \u003cstrong\u003egrade‑A, factory‑fresh unit\u003c\/strong\u003e with voltage and internal resistance rigorously matched before shipping. The flat‑top positive terminal is spot‑weld ready, and the robust nickel‑plated steel can is laser‑sealed against moisture and vibration. The ultra‑low internal resistance — typically \u003cstrong\u003e≤28mΩ\u003c\/strong\u003e — minimizes heat and voltage drop even when you flog it at the full 9A rate, keeping your system efficient and your pack healthy.\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e🌍 From a 12V shed‑light battery that sips solar, to a 24V ham radio field pack, to a 48V powerwall built tier by tier — this 21700 3C cell is the flexible, high‑power building block you’ve been needing. Stop over‑sizing lead‑acid, stop nursing NiMH, and start building the safe, long‑life lithium system you’ve been planning.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e⭐ Key Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e⚡ \u003cstrong\u003e3C Continuous Discharge (9A) \/ 5C Pulse (15A)\u003c\/strong\u003e – True high‑rate lithium iron phosphate. Each cell delivers a full \u003cstrong\u003e9 amps continuous\u003c\/strong\u003e; bursts of \u003cstrong\u003e15 amps\u003c\/strong\u003e handle motor start‑up and inverter surges without voltage collapse.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e🔋 \u003cstrong\u003eGenuine 3000mAh Capacity\u003c\/strong\u003e – Nominal 3.2V, 9.6Wh per cell. Build a 4S 12.8V 3Ah (38.4Wh) or 8S 25.6V 3Ah (76.8Wh) pack with just a handful of cells — perfect for compact solar and backup systems.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e🔄 \u003cstrong\u003e2,000+ Ultra‑Deep Cycle Life\u003c\/strong\u003e – Retains ≥80% capacity after 2,000 full depth‑of‑discharge cycles. That’s over 5 years of daily cycling or a decade of part‑time use — dramatically outlasting lead‑acid and NiMH.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e🛡️ \u003cstrong\u003eInherent LiFePO₄ Safety\u003c\/strong\u003e – No fire, no explosion, no toxic fumes. The only lithium chemistry you can confidently install indoors, in your vehicle, or in children’s educational projects.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e📉 \u003cstrong\u003eUltra‑Low Internal Resistance ≤28mΩ\u003c\/strong\u003e – Minimised heat generation and voltage sag, even under full 3C load. More stored energy goes to your appliances, not wasted as heat.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e🏅 \u003cstrong\u003e100% Grade A Cells\u003c\/strong\u003e – Each cell is factory‑matched for voltage and internal resistance, with zero cycles and laser‑etched model codes. No B‑stock, no used pulls — only consistent, reliable power.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e📏 \u003cstrong\u003eStandard 21700 Format\u003c\/strong\u003e – 21.5mm diameter × 70mm height. Fits all 21700 battery holders, plastic spacers, and shrink‑wrap jigs. Offers ~25% more volume than an 18650 for better heat dissipation and capacity.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e🔩 \u003cstrong\u003eFlat‑Top Terminal – DIY Ready\u003c\/strong\u003e – Clean positive terminal designed for spot‑welding nickel strips, soldering tabs, or pressing into spring‑loaded 21700 sleds. Build your pack your way.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e🌡️ \u003cstrong\u003eAll‑Climate Operation\u003c\/strong\u003e – Discharge from -20°C to 60°C, charge from 0°C to 55°C. Reliably powers your gear in freezing winters and blazing summers.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e🧩 \u003cstrong\u003eModular \u0026amp; Stackable\u003c\/strong\u003e – Combine in series for 12V, 24V, 48V systems; parallel for more capacity. The 3C rating gives you both current and flexibility.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e📊 Parameters\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\u003e21700 LiFePO₄ 3000mAh 3C Cell Specification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003cbr\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCell Type\u003c\/td\u003e\n\u003ctd\u003e21700 Cylindrical LiFePO₄\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemistry\u003c\/td\u003e\n\u003ctd\u003eLithium Iron Phosphate (LiFePO₄)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Voltage\u003c\/td\u003e\n\u003ctd\u003e3.2V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical Capacity\u003c\/td\u003e\n\u003ctd\u003e3,000mAh (0.2C discharge, 25°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Energy\u003c\/td\u003e\n\u003ctd\u003e9.6 Wh\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\u003e\u003cstrong\u003e9A (3C)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePulse Discharge\u003c\/td\u003e\n\u003ctd\u003e15A (5C, ≤5s)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard Charge Current\u003c\/td\u003e\n\u003ctd\u003e1.5A (0.5C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Fast Charge Current\u003c\/td\u003e\n\u003ctd\u003e3A (1C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCut‑off Charging Voltage\u003c\/td\u003e\n\u003ctd\u003e3.65V ±0.05V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDischarge Cut‑off Voltage\u003c\/td\u003e\n\u003ctd\u003e2.0V (2.5V recommended for max cycle life)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Resistance (AC 1kHz)\u003c\/td\u003e\n\u003ctd\u003e≤28mΩ (typical, matched within batch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCycle Life\u003c\/td\u003e\n\u003ctd\u003e≥2,000 cycles (0.5C charge\/discharge, 25°C, 80% DoD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp – Charge\u003c\/td\u003e\n\u003ctd\u003e0°C ~ 55°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp – Discharge\u003c\/td\u003e\n\u003ctd\u003e-20°C ~ 60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temp \/ Humidity\u003c\/td\u003e\n\u003ctd\u003e-20°C ~ 35°C \/ ≤85% RH (store at 3.2‑3.3V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (Diameter × Height)\u003c\/td\u003e\n\u003ctd\u003eApprox. 21.5mm × 70mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight per Cell\u003c\/td\u003e\n\u003ctd\u003eApprox. 60‑62g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Type\u003c\/td\u003e\n\u003ctd\u003eFlat top (positive) \/ nickel‑plated steel can (negative)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eCE, RoHS, UN38.3\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\u003ch3\u003e🎯 Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e☀️ \u003cstrong\u003eDIY 12V Solar Storage\u003c\/strong\u003e – A 4S pack gives you 12.8V 3Ah; add parallel strings to build a 12V 15Ah or 30Ah bank. Perfect for solar garden lights, security cameras, and small off‑grid cabins.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e⚡ \u003cstrong\u003e24V Backup \u0026amp; Inverter Systems\u003c\/strong\u003e – An 8S configuration provides 25.6V 3Ah, ideal for 24V inverters, 3D printers, ham radios, and server backup. High current delivery keeps your gear running smoothly.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e🚐 \u003cstrong\u003eRV \u0026amp; Camper Auxiliary Power\u003c\/strong\u003e – Replace heavy lead‑acid with a lightweight 12.8V LFP pack for interior LEDs, water pumps, and 12V fridges. Safe to install inside without venting concerns.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e🛑 \u003cstrong\u003eHome Office UPS\u003c\/strong\u003e – Keep your router, modem, and VoIP phone online during blackouts with a compact 12.8V battery box. The 3C discharge easily handles the startup surge of networking gear.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e🔧 \u003cstrong\u003ePortable Power Stations \u0026amp; Solar Generators\u003c\/strong\u003e – Build a silent, fume‑free power box with USB‑C PD, 12V cigarette socket, and an inverter. The high discharge rate supports power tools and small appliances.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e📡 \u003cstrong\u003eOff‑Grid Sensors \u0026amp; IoT\u003c\/strong\u003e – Pair a single cell or a small 4S pack with a solar panel for year‑round remote monitoring of weather stations, water levels, or wildlife cameras.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e🚲 \u003cstrong\u003eE‑Bike Accessory \u0026amp; Lighting Packs\u003c\/strong\u003e – Construct a dedicated 8S 24V battery for powerful LED headlights, horns, and display systems. Safe enough to charge inside your apartment.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e🎓 \u003cstrong\u003eSTEM Education \u0026amp; Makerspaces\u003c\/strong\u003e – The safest high‑discharge cell for university labs and DIY enthusiasts. Experiment with BMS design, pack building, and renewable energy storage without fire risk.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OneAndes","offers":[{"title":"Default Title","offer_id":51454208442614,"sku":"OAS1059","price":52.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/2753\/6886\/files\/21700-lifepo4-3000mah-3c-single_fd0a2451-875c-4ece-ad2d-c4b5909c0942.webp?v=1786967973","url":"https:\/\/oneandes.com\/products\/21700-lifepo4-3000mah-3-2v-3c-cell-high-discharge-rate-lithium-iron-phosphate-for-solar-diy-12v-24v-packs","provider":"OneAndes","version":"1.0","type":"link"}