{"product_id":"efest-4549","title":"Efest 4549 IMR 21700 3700mAh 3.7V Unprotected High-Drain 35A Lithium Ion (Li-ion) Flat Top Battery - Boxed","description":"\u003ch2\u003eEfest IMR 21700 Unprotected High-Drain Lithium Ion Flat Top Battery\u003c\/h2\u003e\u003ch3 style=\"font-style: italic;\"\u003e3.7V, 3700mAh\u003c\/h3\u003e\u003cp\u003eHigh draining and long-lasting, the \u003cem\u003eEfest 4549 IMR 21700 Li-Ion Flat To Battery\u003c\/em\u003e is the perfect power source for your personal flashlight! This impressive cell features an incredibly stable Lithium Manganese Oxide chemistry, which is able to provide 35 Amperes of current, more than enough to power your highest-draining flashlights. The IMR 21700 has a sizable 3700 mAh capacity, giving you plenty of usage before needing to recharge. The unprotected cell is compatible with rapid chargers, bringing it back to full power in no time!\u003c\/p\u003e\u003ch4\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/h4\u003e\u003cul\u003e\u0026gt;\t\u003cli\u003eStable Lithium Ion chemistry\u003c\/li\u003e\t\u003cli\u003eCE, RoHS, and MSDS Certified\u003c\/li\u003e\t\u003cli\u003eComes with Efest's 3 Month Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/h4\u003e\u003cul\u003e\t\u003cli\u003e\n\u003cstrong\u003eBattery Size:\u003c\/strong\u003e 21700\u003c\/li\u003e\t\u003cli\u003e\n\u003cstrong\u003eBattery Chemistry:\u003c\/strong\u003e IMR (LiMn(\u003csub\u003e2\u003c\/sub\u003eO\u003csub\u003e4\u003c\/sub\u003e)\u003c\/li\u003e\t\u003cli\u003e\n\u003cstrong\u003eNominal Voltage:\u003c\/strong\u003e 3.7V\u003c\/li\u003e\t\u003cli\u003e\n\u003cstrong\u003eNominal Capacity:\u003c\/strong\u003e 3700 mAh\u003c\/li\u003e\t\u003cli\u003e\n\u003cstrong\u003eMax Charging Current:\u003c\/strong\u003e 4.0A\u003c\/li\u003e\t\u003cli\u003e\n\u003cstrong\u003eRecommended Charging Current:\u003c\/strong\u003e 2.0A\u003c\/li\u003e\t\u003cli\u003e\n\u003cstrong\u003eEstimated Charge Cycles:\u003c\/strong\u003e 500 cycles\u003c\/li\u003e\t\u003cli\u003e\n\u003cstrong\u003eMax Discharge Current:\u003c\/strong\u003e 35A\u003c\/li\u003e\t\u003cli\u003e\n\u003cstrong\u003eCharging Temperature Range:\u003c\/strong\u003e 32°F to 113°F (0°C to 45°C)\u003c\/li\u003e\t\u003cli\u003e\n\u003cstrong\u003eOperating Temperature Range:\u003c\/strong\u003e -4°F to 167°F (-20°C to 75°C)\u003c\/li\u003e\t\u003cli\u003e\n\u003cstrong\u003eShelf Life:\u003c\/strong\u003e 10 Years\u003c\/li\u003e\t\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e\t\t\u003cul\u003e\t\t\t\u003cli\u003e\n\u003cem\u003eLength\u003c\/em\u003e - 0.83\" (21 mm)\u003c\/li\u003e\t\t\t\u003cli\u003e\n\u003cem\u003eDiameter\u003c\/em\u003e - 2.76\" (70 mm)\u003c\/li\u003e\t\t\u003c\/ul\u003e\t\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cimg src=\"https:\/\/files.batteryjunction.com\/frontend\/HostedImages\/misc\/LI-ION-SAFETY-WARNING.jpg\" alt=\"lithium-ion safety warning\"\u003e","brand":"APEXIUM TECHNOLOGY CO., LIMITED","offers":[{"title":"Default Title","offer_id":47569855381736,"sku":"EFEST-4549","price":11.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0701\/0117\/2456\/files\/efest-4549-imr-21700-li-ion-battery_-_image.jpg?v=1754619972","url":"https:\/\/www.batteryjunction.com\/products\/efest-4549","provider":"Battery Junction","version":"1.0","type":"link"}