{"product_id":"rd-lishen-21700-4000mah-45a-battery-lr2170la-lishen-21700-40","title":"Lishen LR2170LA 21700 4000mAh Battery – Unprotected","description":"\u003cp\u003e\u003cstrong\u003eLishen LR2170LA 21700 4000mAh Battery – Unprotected\u003c\/strong\u003e is a rechargeable 3.6V lithium-ion flat-top cell, sold individually. It has no built-in protection circuit and requires appropriate protection in the battery pack or equipment.\u003c\/p\u003e\u003ch2\u003eBattery specifications\u003c\/h2\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eManufacturer\u003c\/th\u003e\n\u003ctd\u003eLishen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eModel\u003c\/th\u003e\n\u003ctd\u003eLR2170LA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCell size\u003c\/th\u003e\n\u003ctd\u003e21700\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eNominal capacity\u003c\/th\u003e\n\u003ctd\u003e4000mAh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eNominal voltage\u003c\/th\u003e\n\u003ctd\u003e3.6V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaximum charge voltage\u003c\/th\u003e\n\u003ctd\u003e4.2V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDischarge cutoff\u003c\/th\u003e\n\u003ctd\u003e2.5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDischarge current\u003c\/th\u003e\n\u003ctd\u003eSupplier lists 35A maximum continuous for cycle life; 45A requires an 80°C temperature cutoff. Do not treat 45A as an unrestricted rating.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eApproximate dimensions\u003c\/th\u003e\n\u003ctd\u003e21.1mm diameter × 70.5mm length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eApproximate cell weight\u003c\/th\u003e\n\u003ctd\u003e65g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTerminal\u003c\/th\u003e\n\u003ctd\u003eFlat top\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eProtection\u003c\/th\u003e\n\u003ctd\u003eUnprotected; use only in a properly designed protected battery pack with BMS or PCB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePackage quantity\u003c\/th\u003e\n\u003ctd\u003eOne cell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch2\u003eCharging, protection and fit\u003c\/h2\u003e\u003cp\u003eUse a charging system specified for this cell’s lithium-ion chemistry and 4.2V maximum charge voltage. Follow the cell documentation for current, temperature and discharge limits. Battery size alone does not establish compatibility: check the complete cell dimensions, flat-top contact and protection requirements.\u003c\/p\u003e\u003cp\u003eKeep individual cells in an insulating battery case. Do not use a cell with a damaged wrapper or insulator, or carry loose cells with metal objects.\u003c\/p\u003e\u003cp\u003eThis cell is supplied for integration into protected battery packs with a BMS or PCB. It is not intended for standalone use or use in e-cigarettes or vaporizers.\u003c\/p\u003e\u003ch2\u003eRelated cells and charging equipment\u003c\/h2\u003e\u003cp\u003e\u003ca href=\"\/collections\/li-ion-lithium-ion-batteries\/li-type-cells+li-size-21700\"\u003eBrowse 21700 cells\u003c\/a\u003e or \u003ca href=\"\/collections\/li-ion-lithium-ion-batteries\/li-type-chargers\"\u003ecompare battery chargers\u003c\/a\u003e. Confirm the charger’s chemistry, voltage, current and physical fit in its manual before purchase.\u003c\/p\u003e\u003cp\u003eFor fit questions or volume pricing, email \u003ca href=\"mailto:Sales@RocketDistributing.com\"\u003eSales@RocketDistributing.com\u003c\/a\u003e with product reference LISHEN-21700-40, quantity and equipment requirements.\u003c\/p\u003e","brand":"Lishen","offers":[{"title":"Default Title","offer_id":54547675119934,"sku":"LISHEN-21700-40","price":10.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1525\/9100\/files\/LISHEN-21700-40.jpg?v=1791070942","url":"https:\/\/www.rocketdistributing.com\/products\/rd-lishen-21700-4000mah-45a-battery-lr2170la-lishen-21700-40","provider":"RocketDistributing.com","version":"1.0","type":"link"}