{"product_id":"18650-dual-slot-usb-li-ion-battery-charger-led-indicator","title":"18650 Dual Slot USB Li-Ion Battery Charger with LED Indicator","description":"\u003ch2\u003e18650 Dual Slot USB Battery Charger with LED Charging Indicator\u003c\/h2\u003e\n\u003cp\u003eKeep your rechargeable lithium-ion batteries topped up and ready to go with this compact, smart dual-slot USB charger. Compatible with a wide range of cylindrical Li-Ion battery sizes, this charger handles two batteries simultaneously and independently — so you're never left waiting. The built-in LED indicator takes the guesswork out of charging: a red light signals charging in progress, and it switches to green once your batteries are fully charged.\u003c\/p\u003e\n\n\u003cp\u003eWhether you power flashlights, vapes, cameras, or other devices that rely on 3.7V Li-Ion batteries, this charger is a reliable everyday essential. It's powered via standard USB, making it easy to plug into any USB wall adapter, power bank, or laptop — no proprietary plug required.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual Independent Slots:\u003c\/strong\u003e Charge two batteries at the same time, each slot managed independently for optimal charging performance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUniversal USB Input:\u003c\/strong\u003e Powered by any standard USB source (DC 5V, 1–2A) — works with wall adapters, power banks, and PC ports.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLED Status Indicator:\u003c\/strong\u003e Red light during charging; turns green when fully charged — easy at-a-glance monitoring.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Battery Compatibility:\u003c\/strong\u003e Supports 10440, 14500, 14650, 16340, 16650, 18350, 18500, and 18650 Li-Ion cells (3.7V).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOvervoltage Protection:\u003c\/strong\u003e Built-in protection circuit helps safeguard your batteries from overcharging.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCE \u0026amp; FCC Certified:\u003c\/strong\u003e Meets international safety and electromagnetic compliance standards.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Portable:\u003c\/strong\u003e Slim 90mm × 30mm × 122mm form factor fits easily in a drawer, bag, or on a desk.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput:\u003c\/strong\u003e DC 5V, 1–2A (via USB)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput:\u003c\/strong\u003e DC 4.2V, 1000mA per slot\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRated Power:\u003c\/strong\u003e 2–5W\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDischarge Current:\u003c\/strong\u003e 650mA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProduct Size:\u003c\/strong\u003e 90mm × 30mm × 122mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProtection:\u003c\/strong\u003e Overvoltage protection\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e CE, FCC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnector:\u003c\/strong\u003e USB (no wall plug included)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatible Battery Models\u003c\/h3\u003e\n\u003cp\u003e10440 | 14500 | 14650 | 16340 | 16650 | 18350 | 18500 | 18650\u003c\/p\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1× Dual Slot USB Battery Charger (USB connector only — no wall plug)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eYou May Also Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10cm-wireless-led-motion-sensor-night-light-type-c-rechargeable-cabinet-wardrobe-lamp-for-staircase-backlight-kitchen-lighting\"\u003e10CM Wireless LED Motion Sensor Night Light – Type-C Rechargeable\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-piece-storage-tray-360-degree-refrigerator-storage-rotating-tray-used-for-kitchen-spice-jars-and-sundry-storage-turntable-1\"\u003e360-Degree Rotating Storage Tray for Kitchen \u0026amp; Home\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.epa.gov\/recycle\/used-lithium-ion-batteries\" target=\"_blank\" rel=\"noopener\"\u003eEPA guidance on lithium-ion battery handling\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What battery sizes is this dual slot USB charger compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: This charger is compatible with a wide range of cylindrical 3.7V Li-Ion batteries, including 10440, 14500, 14650, 16340, 16650, 18350, 18500, and 18650 cell sizes. It does not include batteries — only the charger unit.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Does the 18650 charger come with a wall plug?\u003c\/h4\u003e\n\u003cp\u003eA: No — this charger features a USB connector and requires a standard USB power source (DC 5V, 1–2A) such as a USB wall adapter, power bank, or computer USB port. A wall plug is not included in the package.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How do I know when my batteries are fully charged?\u003c\/h4\u003e\n\u003cp\u003eA: The built-in LED indicator makes it simple: the light glows red during charging and automatically switches to green once the battery in that slot is fully charged. Each slot is monitored independently, so you'll get an accurate reading for each battery.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I charge two different battery sizes at the same time?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! Each of the two slots operates independently, which means you can charge two different compatible battery sizes simultaneously without any interference between them.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What battery sizes is this dual slot USB charger compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This charger is compatible with a wide range of cylindrical 3.7V Li-Ion batteries, including 10440, 14500, 14650, 16340, 16650, 18350, 18500, and 18650 cell sizes. 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