{"product_id":"18650-rechargeable-battery-3-7v-2000mah-18650-battery-for-headlights-etc","title":"18650 Rechargeable Battery 3.7V 2000mAh 18650 Battery for Headlights etc","description":"\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003ePower your headlights and everyday devices with the reliable \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e18650 Rechargeable Battery 3.7V 2000mAh 4A\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e. This high-quality lithium-ion battery delivers a solid \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e2000mAh capacity\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e with a stable \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e4A continuous discharge\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e, offering dependable performance for headlights, flashlights, portable fans, toys, and a wide range of other battery-powered electronics. Whether you are hiking at night, working in low-light conditions, or simply replacing batteries in household gadgets, this 18650 cell provides the consistent energy you need. This listing offers \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eboth Button Top and Flat Top\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e versions, giving you the flexibility to choose the right terminal type for your device. Compact, reliable, and rechargeable, this battery is an excellent value for everyday use.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"\"\u003eKey Features\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e2000mAh Reliable Capacity:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Delivers 2000mAh of reliable energy, providing solid runtime for headlights and other medium-drain devices. Perfect for extended use without frequent recharging.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e4A Discharge Rate:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Offers a stable 4A continuous discharge, suitable for headlights, flashlights, portable fans, and similar devices. Provides consistent performance for daily use.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eButton Top \u0026amp; Flat Top Available:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Choose the right terminal for your device. \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eFlat Top\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e fits most modern headlights and DIY packs. \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eButton Top\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e is required for older devices and specific battery holders with spring-loaded contacts.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eVersatile Compatibility:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Designed to work with headlights, flashlights, portable fans, toys, radios, clocks, and many other devices requiring 18650 batteries.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eRechargeable \u0026amp; Eco-Friendly:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Can be recharged hundreds of times, reducing waste and saving money compared to disposable batteries. Environmentally conscious choice for everyday power needs.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eCompact \u0026amp; Lightweight:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Standard 18650 size ensures easy fit in a wide range of devices, from headlamps to small electronics.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan class=\"\"\u003eTechnical Parameters\u003c\/span\u003e\u003c\/h3\u003e\n\u003cdiv class=\"ds-scroll-area ds-scroll-area--show-on-focus-within _1210dd7 c03cafe9\"\u003e\n\u003cdiv class=\"ds-scroll-area__gutters\"\u003e\u003c\/div\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cspan class=\"\"\u003eParameter\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan class=\"\"\u003eValue\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eBattery Type\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eLithium-Ion (Li-Ion)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eSize\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e18650 (Diameter 18mm, Height 65mm)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eCapacity\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e2000mAh (Minimum 1900mAh)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eNominal Voltage\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e3.7V\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eFull Charge Voltage\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e4.2V\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eCut-off Voltage\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e2.75V\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eDischarge Current\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e4A\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eChemistry\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eLithium-Ion (LiCoO₂ \/ LiMn₂O₄ blend)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eRecharge Cycles\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e800 cycles\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eTerminal Options\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eButton Top \/ Flat Top (select at checkout)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eProtection Circuit\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eUnprotected (relies on device BMS)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eOperating Temperature\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e-20°C to 60°C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eStorage Temperature\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e-20°C to 45°C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eQuantity in Package\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e1 Cell \u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3\u003e\u003cspan class=\"\"\u003eApplications\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eHeadlights \u0026amp; Headlamps:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Powering hiking headlamps, camping headlights, and work headlamps for outdoor activities and low-light work.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eFlashlights:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Running tactical flashlights, everyday carry flashlights, and emergency flashlights.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003ePortable Fans:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Powering small desk fans, handheld fans, and camping fans for cooling comfort.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eToys \u0026amp; Hobbies:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Powering remote-controlled cars, drones, robots, and other electronic hobby toys.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eHome Electronics:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Replacing batteries in remote controls, wireless keyboards, wall clocks, and other household devices.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eRadios \u0026amp; Communication:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Operating portable radios, walkie-talkies, and emergency communication devices.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eDIY Projects:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Building custom battery packs for robotics, Arduino projects, and other DIY electronics.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan class=\"\"\u003eFAQ\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ1: What is the difference between Button Top and Flat Top?\u003c\/span\u003e\u003c\/strong\u003e \u003cbr\u003e\u003cspan class=\"\"\u003eA: \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eFlat Top\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e has a flat positive terminal, compatible with most modern headlights and DIY packs. \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eButton Top\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e has a raised positive terminal (like a standard AA battery), required for older devices and certain battery holders with spring-loaded contacts. Please select your desired version when placing your order.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ2: What is the capacity of this battery?\u003c\/span\u003e\u003c\/strong\u003e \u003cbr\u003e\u003cspan class=\"\"\u003eA: This battery has a \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e2000mAh capacity\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e (minimum 1900mAh), offering solid runtime for headlights and other medium-drain devices. It is a reliable choice for everyday use.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ3: What does 4A mean?\u003c\/span\u003e\u003c\/strong\u003e \u003cbr\u003e\u003cspan class=\"\"\u003eA: 4A refers to the \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003emaximum continuous discharge current\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e of this battery. This means it can safely deliver up to 4 amps of power continuously. This makes it suitable for headlights, flashlights, and portable fans, but \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003enot recommended for high-power applications\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e like vaping or heavy power tools.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ4: Is this battery suitable for my headlight?\u003c\/span\u003e\u003c\/strong\u003e \u003cbr\u003e\u003cspan class=\"\"\u003eA: Yes. This battery is an excellent choice for most headlights that require 18650 cells. Its 2000mAh capacity provides solid runtime, and its 4A discharge rate is sufficient for typical headlight power requirements. Please check your specific headlight's battery specifications before purchase.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ5: Is this battery protected or unprotected?\u003c\/span\u003e\u003c\/strong\u003e \u003cbr\u003e\u003cspan class=\"\"\u003eA: This is an \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eunprotected\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e cell. It relies on your device's built-in BMS (Battery Management System) or protection circuit to handle overcharge, over-discharge, and short-circuit protection. This provides maximum flexibility for use in devices with built-in protection.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ6: How many times can this battery be recharged?\u003c\/span\u003e\u003c\/strong\u003e \u003cbr\u003e\u003cspan class=\"\"\u003eA: This battery can be recharged approximately \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e800 times\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e, depending on usage and charging habits. Proper care (using a quality charger, avoiding full discharge, and storing at moderate temperatures) will extend its lifespan.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ7: What charger should I use?\u003c\/span\u003e\u003c\/strong\u003e \u003cbr\u003e\u003cspan class=\"\"\u003eA: Use a dedicated \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eintelligent Li-Ion charger\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e designed for 3.7V\/4.2V cells. Do not use universal chargers designed for NiMH batteries. Look for chargers with overcharge protection and temperature monitoring features.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ8: How do I identify positive and negative terminals?\u003c\/span\u003e\u003c\/strong\u003e \u003cbr\u003e\u003cspan class=\"\"\u003eA: The \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eflat top\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e (or the raised button on button top version) is the \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003ePositive (+) terminal\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e. The \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003ebottom\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e (the side with the shiny metal casing and a slight indentation) is the \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eNegative (-) terminal\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ9: How should I store this battery when not in use?\u003c\/span\u003e\u003c\/strong\u003e \u003cbr\u003e\u003cspan class=\"\"\u003eA: Store at a partial charge (around 40-60% capacity) in a cool, dry place away from direct sunlight and extreme temperatures. Do not store fully charged or fully depleted for extended periods.\u003c\/span\u003e\u003c\/p\u003e","brand":"DOUBLEPOW","offers":[{"title":"Button Top","offer_id":51454081597686,"sku":"5550DLP37","price":3.28,"currency_code":"USD","in_stock":false},{"title":"Flat Top","offer_id":51454081630454,"sku":"5550DLP38","price":3.28,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/2753\/6886\/files\/2000mAh-18650-headlight-battery-specialized-main_83bbab7e-4fe5-42e6-8d83-b9d896669bd9.webp?v=1786964617","url":"https:\/\/oneandes.com\/products\/18650-rechargeable-battery-3-7v-2000mah-18650-battery-for-headlights-etc","provider":"OneAndes","version":"1.0","type":"link"}