{"product_id":"lultrafire-18650-li-ion-rechargeable-battery-3-7v-4000mah-2-pack","title":"Li-ion Rechargeable Battery 3.7V 4000mAh 18650 - 2 Count","description":"\u003ch2 data-section-id=\"1a9lom9\" data-start=\"554\" data-end=\"635\" class=\"PDq2pG_selectionAnchorContainer\"\u003eReliable Rechargeable Power for Tactical Flashlights \u0026amp; High-Drain Electronics\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp data-start=\"637\" data-end=\"1032\"\u003eKeep your compatible flashlights and electronic devices powered with the UltraFire 18650 Li-ion Rechargeable Battery 2 Pack. Designed for high-drain applications, these 3.7V lithium-ion batteries feature a powerful 4000mAh capacity to provide dependable, long-lasting performance for tactical flashlights, emergency lighting, portable electronics, and other compatible battery-powered equipment.\u003c\/p\u003e\n\u003cp data-start=\"1034\" data-end=\"1273\"\u003eEach battery is equipped with an integrated Printed Circuit Board (PCB) protection system that helps guard against overcharging, over-discharging, and excessive voltage, helping extend battery life while providing safe, reliable operation.\u003c\/p\u003e\n\u003cp data-start=\"1275\" data-end=\"1504\"\u003eWhether you're replacing worn batteries or keeping spare rechargeable batteries on hand, this convenient two-pack offers dependable performance and excellent value for everyday use, emergency preparedness, and outdoor activities.\u003c\/p\u003e\n\u003ch3 data-section-id=\"19zqy0x\" data-start=\"1506\" data-end=\"1518\"\u003eFeatures\u003c\/h3\u003e\n\u003cp data-start=\"1520\" data-end=\"1579\"\u003e• 2 Pack UltraFire 18650 rechargeable lithium-ion batteries\u003c\/p\u003e\n\u003cp data-start=\"1581\" data-end=\"1616\"\u003e• 4000mAh high-capacity performance\u003c\/p\u003e\n\u003cp data-start=\"1618\" data-end=\"1647\"\u003e• 3.7 Volt rechargeable power\u003c\/p\u003e\n\u003cp data-start=\"1649\" data-end=\"1682\"\u003e• Built-in PCB protection circuit\u003c\/p\u003e\n\u003cp data-start=\"1684\" data-end=\"1735\"\u003e• Protection against over-voltage and under-voltage\u003c\/p\u003e\n\u003cp data-start=\"1737\" data-end=\"1779\"\u003e• High energy density for longer run times\u003c\/p\u003e\n\u003cp data-start=\"1781\" data-end=\"1814\"\u003e• Designed for high-drain devices\u003c\/p\u003e\n\u003cp data-start=\"1816\" data-end=\"1856\"\u003e• IEC tested for quality and performance\u003c\/p\u003e\n\u003cp data-start=\"1858\" data-end=\"1904\"\u003e• Environmentally friendly rechargeable design\u003c\/p\u003e\n\u003cp data-start=\"1906\" data-end=\"1961\"\u003e• Ideal for tactical flashlights and emergency lighting\u003c\/p\u003e\n\u003ch3 data-section-id=\"1yl5694\" data-start=\"1963\" data-end=\"1981\"\u003eSpecifications\u003c\/h3\u003e\n\u003cp data-start=\"1983\" data-end=\"2027\"\u003eBattery Type: 18650 Lithium-Ion Rechargeable\u003c\/p\u003e\n\u003cp data-start=\"2029\" data-end=\"2045\"\u003eBrand: UltraFire\u003c\/p\u003e\n\u003cp data-start=\"2047\" data-end=\"2068\"\u003eQuantity: 2 Batteries\u003c\/p\u003e\n\u003cp data-start=\"2070\" data-end=\"2083\"\u003eVoltage: 3.7V\u003c\/p\u003e\n\u003cp data-start=\"2085\" data-end=\"2102\"\u003eCapacity: 4000mAh\u003c\/p\u003e\n\u003cp data-start=\"2104\" data-end=\"2129\"\u003eTerminal Type: Button Top\u003c\/p\u003e\n\u003cp data-start=\"2131\" data-end=\"2149\"\u003ePCB Protected: Yes\u003c\/p\u003e\n\u003cp data-start=\"2151\" data-end=\"2183\"\u003eCharge Cycles: Approximately 500\u003c\/p\u003e\n\u003cp data-start=\"2185\" data-end=\"2218\"\u003eBattery Shelf Life: Up to 3 Years\u003c\/p\u003e\n\u003cp data-start=\"2220\" data-end=\"2245\"\u003eDimensions: 66 mm x 18 mm\u003c\/p\u003e\n\u003cp data-start=\"2247\" data-end=\"2266\"\u003eWeight: 26.5 g each\u003c\/p\u003e\n\u003cp data-start=\"2268\" data-end=\"2278\"\u003eColor: Red\u003c\/p\u003e\n\u003cp data-start=\"2280\" data-end=\"2301\"\u003eCut-Off Voltage: 2.5V\u003c\/p\u003e\n\u003cp data-start=\"2303\" data-end=\"2330\"\u003eInternal Impedance: ≤180 mΩ\u003c\/p\u003e\n\u003cp data-start=\"2332\" data-end=\"2401\"\u003eCycle Performance: Approximately 90% capacity after 400 charge cycles\u003c\/p\u003e\n\u003cp data-start=\"2403\" data-end=\"2419\"\u003eCompatible With:\u003c\/p\u003e\n\u003cp data-start=\"2421\" data-end=\"2447\"\u003e• Tactical LED Flashlights\u003c\/p\u003e\n\u003cp data-start=\"2449\" data-end=\"2469\"\u003e• Emergency Lighting\u003c\/p\u003e\n\u003cp data-start=\"2471\" data-end=\"2500\"\u003e• Portable Electronic Devices\u003c\/p\u003e\n\u003cp data-start=\"2502\" data-end=\"2515\"\u003e• Power Tools\u003c\/p\u003e\n\u003cp data-start=\"2517\" data-end=\"2565\"\u003e• Other compatible 18650 battery-powered devices\u003c\/p\u003e\n\u003ch3 data-section-id=\"7zsklc\" data-start=\"2567\" data-end=\"2586\"\u003eWhat's Included\u003c\/h3\u003e\n\u003cp data-start=\"2588\" data-end=\"2652\"\u003e• Two UltraFire 18650 3.7V 4000mAh Li-ion Rechargeable Batteries\u003c\/p\u003e\n\u003ch3 data-section-id=\"1ew8sog\" data-start=\"2654\" data-end=\"2686\"\u003eImportant Safety Information\u003c\/h3\u003e\n\u003cp data-start=\"2688\" data-end=\"2951\"\u003eOnly use these rechargeable batteries with compatible devices and chargers designed for 18650 lithium-ion batteries. Always follow the manufacturer's charging and storage recommendations. Do not expose batteries to excessive heat, fire, water, or physical damage.\u003c\/p\u003e\n\u003ch3 data-section-id=\"ul2pwc\" data-start=\"2953\" data-end=\"2983\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp data-start=\"2985\" data-end=\"3022\"\u003e\u003cstrong data-start=\"2985\" data-end=\"3022\"\u003eAre these rechargeable batteries?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"3024\" data-end=\"3106\"\u003eYes. These are rechargeable 18650 lithium-ion batteries designed for repeated use.\u003c\/p\u003e\n\u003cp data-start=\"3108\" data-end=\"3144\"\u003e\u003cstrong data-start=\"3108\" data-end=\"3144\"\u003eHow many batteries are included?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"3146\" data-end=\"3211\"\u003eThis package includes two UltraFire 18650 rechargeable batteries.\u003c\/p\u003e\n\u003cp data-start=\"3213\" data-end=\"3257\"\u003e\u003cstrong data-start=\"3213\" data-end=\"3257\"\u003eWill these work in tactical flashlights?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"3259\" data-end=\"3424\"\u003eYes. These batteries are designed for many compatible tactical LED flashlights and other high-drain electronic devices that use protected button-top 18650 batteries.\u003c\/p\u003e\n\u003cp data-start=\"3426\" data-end=\"3453\"\u003e\u003cstrong data-start=\"3426\" data-end=\"3453\"\u003eWhat is PCB protection?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"3455\" data-end=\"3625\"\u003ePCB (Printed Circuit Board) protection helps protect the battery from overcharging, over-discharging, and excessive voltage, helping improve safety and battery longevity.\u003c\/p\u003e\n\u003cp data-start=\"3627\" data-end=\"3676\"\u003e\u003cstrong data-start=\"3627\" data-end=\"3676\"\u003eCan these be used for emergency preparedness?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"3678\" data-end=\"3847\"\u003eAbsolutely. Rechargeable 18650 batteries are an excellent addition to emergency preparedness kits, especially for powering compatible flashlights and emergency lighting.\u003c\/p\u003e\n\u003cp data-start=\"3849\" data-end=\"3880\"\u003e\u003cstrong data-start=\"3849\" data-end=\"3880\"\u003eWhy purchase from SDP Inc.?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"3882\" data-end=\"4097\"\u003eFor more than 20 years, SDP Inc. has been providing trusted personal safety, tactical, and emergency preparedness products backed by knowledgeable customer service and dependable support before and after every sale.\u003c\/p\u003e","brand":"UltraFire","offers":[{"title":"Default Title","offer_id":51522793734284,"sku":"SW18650LI","price":10.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/4546\/8300\/files\/ultrafire-18650-battery-2-count_ae74e998-a612-4373-a095-431a70b5cb22.png?v=1784757274","url":"https:\/\/sdpincusa.com\/products\/lultrafire-18650-li-ion-rechargeable-battery-3-7v-4000mah-2-pack","provider":"SDP Inc.","version":"1.0","type":"link"}