{"product_id":"vapcell-k55-21700-15a-5500mah-li-ion-battery-flat-top","title":"Vapcell K55 21700 15A 5500mAh Li-ion Battery (Flat Top)","description":"\u003ch2 data-section-id=\"r4q517\" data-start=\"260\" data-end=\"318\"\u003e⚡High Capacity 21700 Battery for Maximum Runtime\u003c\/h2\u003e\n\u003cp data-start=\"320\" data-end=\"604\"\u003eThe \u003cstrong data-start=\"324\" data-end=\"361\"\u003eVapcell K55 21700 5500mAh battery\u003c\/strong\u003e is engineered for users who demand \u003cstrong data-start=\"397\" data-end=\"456\"\u003emaximum runtime, stable output, and premium reliability\u003c\/strong\u003e. Built using advanced \u003cstrong data-start=\"479\" data-end=\"508\"\u003eINR lithium-ion chemistry\u003c\/strong\u003e, the K55 delivers exceptional energy density while maintaining safe and consistent performance.\u003c\/p\u003e\n\u003cp data-start=\"606\" data-end=\"940\"\u003eWith a massive \u003cstrong data-start=\"621\" data-end=\"641\"\u003e5500mAh capacity\u003c\/strong\u003e, this cell is ideal for \u003cstrong data-start=\"666\" data-end=\"728\"\u003eflashlights, power banks, and low-to-mid drain electronics\u003c\/strong\u003e where extended usage time is critical. The 21700 format provides \u003cstrong data-start=\"794\" data-end=\"869\"\u003egreater capacity and efficiency compared to traditional 18650 batteries\u003c\/strong\u003e, making it a top upgrade choice. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"942\" data-end=\"945\"\u003e\n\u003ch2 data-section-id=\"11p7s4c\" data-start=\"947\" data-end=\"981\"\u003e🔑 Key Features:\u003c\/h2\u003e\n\u003cul data-start=\"983\" data-end=\"1544\"\u003e\n\u003cli data-section-id=\"1avpc2m\" data-start=\"983\" data-end=\"1065\"\u003e✅ \u003cstrong data-start=\"987\" data-end=\"1018\"\u003e5500mAh Ultra-High Capacity\u003c\/strong\u003e – Extended runtime for long-use applications\u003c\/li\u003e\n\u003cli data-section-id=\"1mvii6x\" data-start=\"1066\" data-end=\"1125\"\u003e✅ \u003cstrong data-start=\"1070\" data-end=\"1094\"\u003e21700 Battery Format\u003c\/strong\u003e – More energy vs 18650 cells\u003c\/li\u003e\n\u003cli data-section-id=\"1yri5ps\" data-start=\"1126\" data-end=\"1245\"\u003e✅ \u003cstrong data-start=\"1130\" data-end=\"1157\"\u003eStable 3.6V–3.7V Output\u003c\/strong\u003e – Consistent performance across discharge cycle \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"yqslp5\" data-start=\"1246\" data-end=\"1324\"\u003e✅ \u003cstrong data-start=\"1250\" data-end=\"1279\"\u003eINR Lithium-Ion Chemistry\u003c\/strong\u003e – Reliable, rechargeable, and long-lasting\u003c\/li\u003e\n\u003cli data-section-id=\"1i7olkj\" data-start=\"1325\" data-end=\"1402\"\u003e✅ \u003cstrong data-start=\"1329\" data-end=\"1365\"\u003eOptimized for Runtime Over Drain\u003c\/strong\u003e – Ideal for moderate-drain devices\u003c\/li\u003e\n\u003cli data-section-id=\"1pkrasj\" data-start=\"1403\" data-end=\"1476\"\u003e✅ \u003cstrong data-start=\"1407\" data-end=\"1448\"\u003eFlat Top Design (Button Top Optional)\u003c\/strong\u003e – Versatile compatibility\u003c\/li\u003e\n\u003cli data-section-id=\"gqhw8n\" data-start=\"1477\" data-end=\"1544\"\u003e✅ \u003cstrong data-start=\"1481\" data-end=\"1508\"\u003eLow Self-Discharge Rate\u003c\/strong\u003e – Maintains charge during storage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1546\" data-end=\"1549\"\u003e\n\u003ch2 data-section-id=\"p9cifj\" data-start=\"1551\" data-end=\"1581\"\u003e📊 Technical Specifications:\u003c\/h2\u003e\n\u003cul data-start=\"1583\" data-end=\"2085\"\u003e\n\u003cli data-section-id=\"614n87\" data-start=\"1583\" data-end=\"1609\"\u003e\n\u003cstrong data-start=\"1585\" data-end=\"1595\"\u003eModel:\u003c\/strong\u003e Vapcell K55\u003c\/li\u003e\n\u003cli data-section-id=\"1al3oni\" data-start=\"1610\" data-end=\"1637\"\u003e\n\u003cstrong data-start=\"1612\" data-end=\"1629\"\u003eBattery Size:\u003c\/strong\u003e 21700\u003c\/li\u003e\n\u003cli data-section-id=\"1gerg31\" data-start=\"1638\" data-end=\"1674\"\u003e\n\u003cstrong data-start=\"1640\" data-end=\"1654\"\u003eChemistry:\u003c\/strong\u003e INR (Lithium-ion)\u003c\/li\u003e\n\u003cli data-section-id=\"1gerg31\" data-start=\"1638\" data-end=\"1674\"\u003e\n\u003cstrong\u003eCDR:\u003c\/strong\u003e 15A\u003c\/li\u003e\n\u003cli data-section-id=\"1x6y61k\" data-start=\"1675\" data-end=\"1708\"\u003e\n\u003cstrong data-start=\"1677\" data-end=\"1698\"\u003eTypical Capacity:\u003c\/strong\u003e 5500mAh\u003c\/li\u003e\n\u003cli data-section-id=\"1izww8p\" data-start=\"1709\" data-end=\"1783\"\u003e\n\u003cstrong data-start=\"1711\" data-end=\"1731\"\u003eNominal Voltage:\u003c\/strong\u003e 3.6V – 3.7V \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"aastod\" data-start=\"1784\" data-end=\"1854\"\u003e\n\u003cstrong data-start=\"1786\" data-end=\"1809\"\u003eMax Charge Voltage:\u003c\/strong\u003e 4.2V \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"e106ru\" data-start=\"1855\" data-end=\"1909\"\u003e\n\u003cstrong data-start=\"1857\" data-end=\"1876\"\u003eDischarge Type:\u003c\/strong\u003e High capacity \/ moderate drain\u003c\/li\u003e\n\u003cli data-section-id=\"16v83sc\" data-start=\"1910\" data-end=\"2004\"\u003e\n\u003cstrong data-start=\"1912\" data-end=\"1936\"\u003eStandard Dimensions:\u003c\/strong\u003e ~21mm × 70mm (21700 format) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"h23grn\" data-start=\"2005\" data-end=\"2085\"\u003e\n\u003cstrong data-start=\"2007\" data-end=\"2024\"\u003eRechargeable:\u003c\/strong\u003e Yes (CC\/CV charging) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2087\" data-end=\"2090\"\u003e\n\u003ch2 data-section-id=\"wj3uqb\" data-start=\"2092\" data-end=\"2134\"\u003e🔦 Best Uses:\u003c\/h2\u003e\n\u003cp data-start=\"2136\" data-end=\"2194\"\u003eThis \u003cstrong data-start=\"2141\" data-end=\"2178\"\u003e21700 5500mAh lithium-ion battery\u003c\/strong\u003e is perfect for:\u003c\/p\u003e\n\u003cul data-start=\"2196\" data-end=\"2453\"\u003e\n\u003cli data-section-id=\"1menslt\" data-start=\"2196\" data-end=\"2251\"\u003e🔦 \u003cstrong data-start=\"2201\" data-end=\"2249\"\u003eHigh-lumen flashlights (long runtime setups)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"q9n2xm\" data-start=\"2252\" data-end=\"2300\"\u003e🔋 \u003cstrong data-start=\"2257\" data-end=\"2298\"\u003ePower banks \u0026amp; portable energy storage\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"ygc569\" data-start=\"2301\" data-end=\"2352\"\u003e🎒 \u003cstrong data-start=\"2306\" data-end=\"2350\"\u003eEDC gear requiring extended battery life\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1fpbjju\" data-start=\"2353\" data-end=\"2394\"\u003e⚡ \u003cstrong data-start=\"2357\" data-end=\"2392\"\u003eLow-to-medium drain electronics\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"16ctqka\" data-start=\"2395\" data-end=\"2453\"\u003e🚐 \u003cstrong data-start=\"2400\" data-end=\"2453\"\u003eCamping, emergency kits, and backup power systems\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2455\" data-end=\"2458\"\u003e\n\u003ch2 data-section-id=\"9bl0d2\" data-start=\"2460\" data-end=\"2489\"\u003e🚀 Why Choose Vapcell K55?\u003c\/h2\u003e\n\u003cp data-start=\"2491\" data-end=\"2591\"\u003eIf you're searching for a \u003cstrong data-start=\"2517\" data-end=\"2564\"\u003ehigh capacity 21700 battery for flashlights\u003c\/strong\u003e, the Vapcell K55 delivers:\u003c\/p\u003e\n\u003cul data-start=\"2593\" data-end=\"2838\"\u003e\n\u003cli data-section-id=\"3sfmkw\" data-start=\"2593\" data-end=\"2652\"\u003e🔋 \u003cstrong data-start=\"2598\" data-end=\"2650\"\u003eOne of the highest capacities in the 21700 class\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"q1w5jl\" data-start=\"2653\" data-end=\"2700\"\u003e⏱️ \u003cstrong data-start=\"2658\" data-end=\"2698\"\u003eLonger runtime vs 4000–5000mAh cells\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"i97un6\" data-start=\"2701\" data-end=\"2766\"\u003e⚡ \u003cstrong data-start=\"2705\" data-end=\"2764\"\u003eStable voltage output for consistent device performance\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1m9jei\" data-start=\"2767\" data-end=\"2838\"\u003e🧠 \u003cstrong data-start=\"2772\" data-end=\"2838\"\u003eIdeal balance for users prioritizing runtime over max amperage\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2840\" data-end=\"2953\"\u003e👉 Compared to high-drain cells, the K55 is optimized for \u003cstrong data-start=\"2898\" data-end=\"2926\"\u003eefficiency and endurance\u003c\/strong\u003e, not extreme current draw.\u003c\/p\u003e\n\u003chr data-start=\"2955\" data-end=\"2958\"\u003e\n\u003ch2 data-section-id=\"9s2f5r\" data-start=\"2960\" data-end=\"2983\"\u003e⚠️ Safety \u0026amp; Handling:\u003c\/h2\u003e\n\u003cul data-start=\"2985\" data-end=\"3240\"\u003e\n\u003cli data-section-id=\"1mzf0w0\" data-start=\"2985\" data-end=\"3051\"\u003eUse only with a \u003cstrong data-start=\"3003\" data-end=\"3049\"\u003e21700-compatible Li-ion charger (4.2V max)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1khr96j\" data-start=\"3052\" data-end=\"3091\"\u003eDo not exceed device current limits\u003c\/li\u003e\n\u003cli data-section-id=\"ekqh7r\" data-start=\"3092\" data-end=\"3144\"\u003eNever short circuit, puncture, or over-discharge\u003c\/li\u003e\n\u003cli data-section-id=\"e4l8xl\" data-start=\"3145\" data-end=\"3187\"\u003eStore in a \u003cstrong data-start=\"3158\" data-end=\"3185\"\u003eprotective battery case\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"ge1g11\" data-start=\"3188\" data-end=\"3240\"\u003eInspect wraps regularly—do not use damaged cells\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cstrong\u003e*** WARNING ***\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cp\u003eAll users must have appropriate understanding of lithium-ion batteries before purchase. Use caution when working with and using lithium-ion batteries as they are very sensitive to charging characteristics and may explode, burn, or cause a fire if misused or mishandled. Always charge in or on a fire-proof surface. Never leave batteries charging unattended. Buyer is responsible for any damage or injury caused by misuse or mishandling lithium-ion batteries and chargers. No express or implied guarantee of compatibility with any device can be made. Charge only with a smart charger designed for this specific type of lithium-ion battery. Do not mix and match old and new, used and unused batteries.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDO NOT USE WITH E-CIGARETTE, VAPORIZER, OR SIMILAR DEVICE\u003c\/li\u003e\n\u003cli\u003eMISUSING OR MISHANDLING LITHIUM-ION BATTERIES CAN POSE A SERIOUS RISK OF PERSONAL INJURY, PROPERTY DAMAGE, OR DEATH\u003c\/li\u003e\n\u003cli\u003eBATTERIES MAY EXPLODE, BURN, OR CAUSE A FIRE IF MISUSED OR MISHANDLED\u003c\/li\u003e\n\u003cli\u003eONLY USE WITH PROPER CIRCUITRY IN A PROTECTED BATTERY PACK\u003c\/li\u003e\n\u003cli\u003eONLY USE WITHIN MANUFACTURER LISTED SPECIFICATIONS\u003c\/li\u003e\n\u003cli\u003eDO NOT STORE LOOSE BATTERY IN A POCKET, PURSE ETC. - ALWAYS USE A PROTECTIVE CASE OR BOX\u003c\/li\u003e\n\u003cli\u003eKEEP AWAY from metal objects to prevent short circuiting\u003c\/li\u003e\n\u003cli\u003eDO NOT short circuit\u003c\/li\u003e\n\u003cli\u003eDO NOT use if wrapper or insulator is damaged or torn\u003c\/li\u003e\n\u003cli\u003eDO NOT use if damaged in any way\u003c\/li\u003e\n\u003cli\u003eDO NOT overcharge or over-discharge\u003c\/li\u003e\n\u003cli\u003eDO NOT modify, disassemble, puncture, cut, crush, or incinerate\u003c\/li\u003e\n\u003cli\u003eDO NOT expose to liquids or high temperatures\u003c\/li\u003e\n\u003cli\u003eDO NOT solder, spot weld only\u003c\/li\u003e\n\u003cli\u003eUser must be familiar with handling lithium-ion batteries before purchase\u003c\/li\u003e\n\u003cli\u003eUsage of batteries is AT YOUR OWN RISK\u003c\/li\u003e\n\u003cli\u003eALWAYS charge in or on a fire-proof surface and never leave charging batteries unattended.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Vapcell","offers":[{"title":"Default Title","offer_id":48051622772950,"sku":"Vapcell K55 21700 15A 5500mAh (FT)","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0418\/7399\/7975\/files\/1_7254570c-3314-406c-ac31-36a49dca98b7.jpg?v=1775719031","url":"https:\/\/www.brightlumenshop.com\/products\/vapcell-k55-21700-15a-5500mah-li-ion-battery-flat-top","provider":"BrightLumenshop.com","version":"1.0","type":"link"}