{"product_id":"tenpower-inr21700-50xg-21700-battery-cell-5000mah-40a-high-discharge","title":"Tenpower INR21700-50XG 21700 Battery Cell | 5000mAh 40A High Discharge","description":"\u003ch2 class=\"PDq2pG_selectionAnchorContainer\"\u003eTenpower INR21700-50XG High-Power 21700 Lithium-Ion Cell\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003ch3\u003e5,000mAh capacity with serious high-current performance.\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eTenpower INR21700-50XG\u003c\/strong\u003e is a high-performance 21700 lithium-ion cell designed for battery systems that need both strong capacity and very high discharge capability.\u003c\/p\u003e\n\u003cp\u003eTenpower rates the 50XG at \u003cstrong\u003e5,000mAh nominal capacity\u003c\/strong\u003e, \u003cstrong\u003e40A continuous discharge without a temperature cutoff\u003c\/strong\u003e, and up to \u003cstrong\u003e90A continuous discharge when using a 75°C cell-temperature cutoff\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eFor short-duration high-power demands, Tenpower specifies a \u003cstrong\u003e140A pulse discharge for up to 3 seconds\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eWith internal impedance of \u003cstrong\u003e≤4mΩ\u003c\/strong\u003e, a maximum charge current of \u003cstrong\u003e15A\u003c\/strong\u003e, and a standard 21700 footprint, the 50XG is particularly well suited for high-performance e-bikes, electric motorcycles, robotics, drones, power tools, industrial equipment and custom high-current battery packs. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e5,000mAh • 40A Continuous • 90A Temperature-Controlled Continuous • 140A 3-Second Pulse • 3.6V Nominal\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eWhy Choose the Tenpower 50XG?\u003c\/h2\u003e\n\u003ch3\u003e40A Continuous Without Thermal Cutoff\u003c\/h3\u003e\n\u003cp\u003eUnlike cells whose highest advertised current rating depends entirely on thermal cutoff conditions, Tenpower specifies the INR21700-50XG for \u003cstrong\u003e40A maximum continuous discharge without a temperature cutoff\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eUp to 90A With Temperature Monitoring\u003c\/h3\u003e\n\u003cp\u003eFor engineered systems with active temperature monitoring, Tenpower specifies up to \u003cstrong\u003e90A continuous discharge with a 75°C cell-temperature cutoff\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e140A Pulse Capability\u003c\/h3\u003e\n\u003cp\u003eThe manufacturer specifies a maximum pulse discharge of \u003cstrong\u003e140A for 3 seconds\u003c\/strong\u003e, making the 50XG suitable for applications with very high short-duration power demands. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e5,000mAh Capacity\u003c\/h3\u003e\n\u003cp\u003eThe 50XG maintains a full \u003cstrong\u003e5.0Ah nominal capacity\u003c\/strong\u003e, with Tenpower specifying \u003cstrong\u003e4,950mAh minimum capacity\u003c\/strong\u003e under standard test conditions. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eUltra-Low Internal Resistance\u003c\/h3\u003e\n\u003cp\u003eTenpower specifies AC internal impedance of \u003cstrong\u003e≤4mΩ at 1kHz, 25±3°C and 30% SOC\u003c\/strong\u003e, helping minimize voltage sag and resistive losses during high-current operation. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eFast-Charge Capability\u003c\/h3\u003e\n\u003cp\u003eStandard charging is \u003cstrong\u003e2.5A\u003c\/strong\u003e, while maximum manufacturer-rated charging current is an impressive \u003cstrong\u003e15A\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003eSpecifications\u003c\/h1\u003e\n\u003cdiv class=\"group TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"last:pe-10\"\u003eSpecification\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eTenpower INR21700-50XG\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eTenpower\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer Model\u003c\/td\u003e\n\u003ctd\u003eINR21700-50XG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCell Format\u003c\/td\u003e\n\u003ctd\u003e21700 cylindrical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemistry\u003c\/td\u003e\n\u003ctd\u003eRechargeable Lithium-Ion \/ INR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Capacity\u003c\/td\u003e\n\u003ctd\u003e5,000mAh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Capacity\u003c\/td\u003e\n\u003ctd\u003e4,950mAh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Voltage\u003c\/td\u003e\n\u003ctd\u003e3.6V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Charge Voltage\u003c\/td\u003e\n\u003ctd\u003e4.20V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDischarge Cutoff Voltage\u003c\/td\u003e\n\u003ctd\u003e2.50V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard Charge Current\u003c\/td\u003e\n\u003ctd\u003e2.5A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Charge Current\u003c\/td\u003e\n\u003ctd\u003e15A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContinuous Discharge\u003c\/td\u003e\n\u003ctd\u003e40A without temperature cutoff\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature-Controlled Continuous Discharge\u003c\/td\u003e\n\u003ctd\u003e90A with 75°C cutoff\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak\/Pulse Discharge\u003c\/td\u003e\n\u003ctd\u003e140A for 3 seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Resistance\u003c\/td\u003e\n\u003ctd\u003e≤4mΩ AC @ 1kHz, 25±3°C, 30% SOC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Diameter\u003c\/td\u003e\n\u003ctd\u003e≤21.50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Height\u003c\/td\u003e\n\u003ctd\u003e≤70.50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Weight\u003c\/td\u003e\n\u003ctd\u003e71g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharge Ambient Temperature\u003c\/td\u003e\n\u003ctd\u003e0°C to 45°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDischarge Ambient Temperature\u003c\/td\u003e\n\u003ctd\u003e-20°C to 60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCell Surface Temperature – Charge\u003c\/td\u003e\n\u003ctd\u003e0°C to 60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCell Surface Temperature – Discharge\u003c\/td\u003e\n\u003ctd\u003e-20°C to 80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection\u003c\/td\u003e\n\u003ctd\u003eUnprotected industrial cell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal\u003c\/td\u003e\n\u003ctd\u003eFlat top\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003eThe dimensional, weight and temperature values above are directly specified in Tenpower V0.2. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003eCycle Life\u003c\/h1\u003e\n\u003cp\u003eTenpower specifies:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e500 cycles with ≥60% of initial capacity remaining\u003c\/strong\u003e under its high-load cycle test.\u003c\/p\u003e\n\u003cp\u003eManufacturer cycle test conditions:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCharge: \u003cstrong\u003e6A CC-CV to 4.20V\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCharge termination: \u003cstrong\u003e100mA\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eRest: \u003cstrong\u003e10 minutes\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDischarge: \u003cstrong\u003e40A\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDischarge termination: \u003cstrong\u003e2.50V or 75°C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eRest: \u003cstrong\u003e45 minutes\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eAmbient temperature: \u003cstrong\u003e25±3°C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAfter 500 cycles under those demanding conditions, the manufacturer specifies at least \u003cstrong\u003e60% capacity retention\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThat is important because this is \u003cstrong\u003enot a gentle 0.2C cycle-life test\u003c\/strong\u003e. Tenpower is cycling the cell at 40A discharge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003eBest Applications\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-performance e-bike battery packs\u003c\/li\u003e\n\u003cli\u003eElectric motorcycles\u003c\/li\u003e\n\u003cli\u003eElectric scooters\u003c\/li\u003e\n\u003cli\u003eRacing and performance battery systems\u003c\/li\u003e\n\u003cli\u003eRobotics\u003c\/li\u003e\n\u003cli\u003eUAVs and drones\u003c\/li\u003e\n\u003cli\u003ePower tools\u003c\/li\u003e\n\u003cli\u003eCordless industrial equipment\u003c\/li\u003e\n\u003cli\u003eHigh-current custom lithium batteries\u003c\/li\u003e\n\u003cli\u003eOEM battery assemblies\u003c\/li\u003e\n\u003cli\u003eLight EV applications\u003c\/li\u003e\n\u003cli\u003eHigh-power mobility systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch1\u003eChoosing Between Your High-Power Cells\u003c\/h1\u003e\n\u003cp\u003eThis gives you a very good product ladder on ULS:\u003c\/p\u003e\n\u003cdiv class=\"group TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"last:pe-10\"\u003eCell\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eCapacity\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eContinuous Discharge\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eThermal-Controlled Rating\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003ePulse\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAmprius SA112\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6,500mAh\u003c\/td\u003e\n\u003ctd\u003e13A\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e26A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSamsung 50S\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5,000mAh\u003c\/td\u003e\n\u003ctd\u003eHigh power\u003c\/td\u003e\n\u003ctd\u003eTemperature-dependent higher rating\u003c\/td\u003e\n\u003ctd\u003eHigh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTenpower 50XG\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e5,000mAh\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e40A\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e90A @ 75°C cutoff\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e140A \/ 3 sec\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLinkData 60P\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6,000mAh\u003c\/td\u003e\n\u003ctd\u003eHigh\u003c\/td\u003e\n\u003ctd\u003e60A thermal-controlled\u003c\/td\u003e\n\u003ctd\u003e110A \/ 10 sec\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003eThe \u003cstrong\u003e50XG should absolutely go in both your \u003ccode\u003e21700 Cells\u003c\/code\u003e and \u003ccode\u003eHigh Discharge Cells\u003c\/code\u003e collections.\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003eImportant High-Current Rating\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003e40A and 90A ratings should not be presented as the same thing\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eTenpower specifies:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e40A continuous discharge WITHOUT temperature cutoff\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eand\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e90A continuous discharge WITH a 75°C temperature cutoff.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTherefore, a battery system operating above the 40A non-temperature-controlled rating requires appropriate thermal monitoring and pack engineering.\u003c\/p\u003e\n\u003cp\u003eThe finished battery pack may have a substantially lower current rating depending on the:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBMS\u003c\/li\u003e\n\u003cli\u003eBusbars\/interconnects\u003c\/li\u003e\n\u003cli\u003eNickel or copper thickness\u003c\/li\u003e\n\u003cli\u003eCell spacing\u003c\/li\u003e\n\u003cli\u003eCooling\u003c\/li\u003e\n\u003cli\u003eWiring\u003c\/li\u003e\n\u003cli\u003eConnectors\u003c\/li\u003e\n\u003cli\u003eFuse system\u003c\/li\u003e\n\u003cli\u003eEnclosure\u003c\/li\u003e\n\u003cli\u003eAmbient temperature\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe cell manufacturer specification explicitly distinguishes these two ratings.\u003c\/p\u003e","brand":"Tenpower","offers":[{"title":"Default Title","offer_id":43256232968254,"sku":null,"price":8.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0648\/9289\/5294\/files\/Hacca9773a7904986bf857f063914c1d9T.jpg_300x300_1ba627da-3685-4bd1-8b4f-1f693b64189b.avif?v=1787881343","url":"https:\/\/unitedlithium.us\/products\/tenpower-inr21700-50xg-21700-battery-cell-5000mah-40a-high-discharge","provider":"United Lithium Solutions","version":"1.0","type":"link"}