{"product_id":"4-slot-smart-usb-charger-18650-26650-lithium-ion-batteries","title":"4-Slot Smart USB Charger for 18650 26650 Lithium-Ion Batteries","description":"\n\u003ch2\u003e4-Slot Smart USB Lithium-Ion Battery Charger\u003c\/h2\u003e\n\u003cp\u003eKeep your rechargeable batteries topped up and ready to go with this compact, intelligent 4-slot USB charger. Compatible with a wide range of cylindrical lithium-ion cell sizes, it charges up to four batteries simultaneously — each in its own independent charging channel — so you never run out of power when you need it most.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e4 Independent Slots:\u003c\/strong\u003e Charge up to four batteries at the same time, each managed independently for optimal charging performance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Compatibility:\u003c\/strong\u003e Works with 10440, 14500, 14650, 16340, 16650, 18350, 18500, 18650, 26650, and more.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUSB Power Input:\u003c\/strong\u003e Powered via any standard USB source (power bank, wall adapter, laptop, car charger) — incredibly versatile and travel-friendly.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSmart Charging:\u003c\/strong\u003e Automatically detects battery status and delivers the appropriate charge, stopping when full to protect your cells.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Lightweight:\u003c\/strong\u003e Measures just 90 × 30 × 122 mm and weighs only 106 g — easy to pack and store.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCE Certified:\u003c\/strong\u003e Meets CE safety standards for peace of mind.\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\u003eCompatible Battery Models:\u003c\/strong\u003e 10440 \/ 14500 \/ 14650 \/ 16340 \/ 16650 \/ 18350 \/ 18500 \/ 18650 \/ 26650\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 90 mm × 30 mm × 122 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 106 g\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertification:\u003c\/strong\u003e CE\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBattery Included:\u003c\/strong\u003e No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlug Included:\u003c\/strong\u003e No (USB connector only — use your own USB power adapter)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × 4-Slot USB Battery Charger (USB cable\/connector; no wall plug included)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\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 Cabinet Lamp\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-inflatable-waist-cushion-travel-waist-support-portable-inflatable-waist-cushion-travel-pillow-complimentary-storage-bag\"\u003eInflatable Waist Cushion – Portable Travel Waist Support Pillow\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 are compatible with this 4-slot USB lithium-ion battery charger?\u003c\/h4\u003e\n\u003cp\u003eA: This smart charger is compatible with a wide range of cylindrical lithium-ion battery sizes, including 10440, 14500, 14650, 16340, 16650, 18350, 18500, 18650, and 26650. It accommodates most standard rechargeable li-ion cells commonly used in flashlights, vaporizers, radios, and other devices.\u003c\/p\u003e\n\u003ch4\u003eQ: Does this charger come with a USB wall plug or batteries?\u003c\/h4\u003e\n\u003cp\u003eA: No wall plug or batteries are included. The charger connects via a USB connector and can be powered from any USB source such as a USB wall adapter, power bank, laptop, or car charger (sold separately). Batteries are also sold separately.\u003c\/p\u003e\n\u003ch4\u003eQ: Can I charge batteries of different sizes at the same time?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! Each of the 4 slots operates independently, meaning you can charge up to four batteries simultaneously — even if they are different compatible sizes. Each slot manages its own charging cycle and stops automatically when that battery is fully charged.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this charger safe to use?\u003c\/h4\u003e\n\u003cp\u003eA: This charger is CE certified and features smart charging technology that automatically monitors each battery, delivering the correct charge rate and stopping when the battery reaches full capacity to protect against overcharging.\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 are compatible with this 4-slot USB lithium-ion battery charger?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This smart charger is compatible with a wide range of cylindrical lithium-ion battery sizes, including 10440, 14500, 14650, 16340, 16650, 18350, 18500, 18650, and 26650. 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