{"product_id":"batterycharger-universal-i4","title":"IMREN I4 Universal 4-Slot Battery Charger USB Type-C for Li-ion\/NiMH","description":"\u003cp\u003eThe IMREN I4 Universal Battery Charger supports simultaneous charging of four Li-ion or NiMH batteries with adjustable current (up to 1A per slot). It features a USB Type-C port, integrated overvoltage and short circuit protection, battery capacity testing, and mobile charging capability via 5VDC booster output. Designed to fit AA, AAA, 10440, 14500, 16340, 18350, 18500, 18650, 20700, 21700, and 26650 cells, it’s ideal for users in vaping, drones, flashlights, and electric vehicle communities seeking safe, high-compatibility battery management.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-Battery Compatibility:\u003c\/strong\u003e Supports 1.2V NiMH and 3.6\/3.7V Li-ion\/IMR\/LiFePO4; charges AA\/AAA and high-drain cells concurrently.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIndependent Channel Charging:\u003c\/strong\u003e Four slots with max 1A charge current per slot for mixed batteries and chemistries.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUSB Type-C Input:\u003c\/strong\u003e Fast charging capability via standard USB-C (5V\/2A input).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMobile Power Output Function:\u003c\/strong\u003e Acts as a portable power bank (5VDC booster output, max 2A current).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSafety Protections:\u003c\/strong\u003e Overvoltage, overcharging, and short-circuit protections; meets IEC\/EN 60335-2-29 safety standards.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBattery Test Functions:\u003c\/strong\u003e Measures capacity and estimates internal resistance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax Output:\u003c\/strong\u003e Channel 1\/4: 1000mA; Channel 2\/3: 500mA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial \u0026amp; Build:\u003c\/strong\u003e Durable ABS construction; compact (110×103×30mm, 200g).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eComparison Table\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eIMREN I4\u003c\/th\u003e\n\u003cth\u003eNitecore D4\u003c\/th\u003e\n\u003cth\u003eXTAR VC4S\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSlots\u003c\/td\u003e\n\u003ctd\u003e4 (independent)\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eInput\u003c\/td\u003e\n\u003ctd\u003eUSB Type-C\u003c\/td\u003e\n\u003ctd\u003eAC\/USB\u003c\/td\u003e\n\u003ctd\u003eMicro-USB\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBattery Types\u003c\/td\u003e\n\u003ctd\u003eLi-ion, NiMH, LiFePO4\u003c\/td\u003e\n\u003ctd\u003eLi-ion, NiMH\u003c\/td\u003e\n\u003ctd\u003eLi-ion, NiMH\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMobile Charging\u003c\/td\u003e\n\u003ctd\u003eYes, 5V2A Output\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCapacity Test\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eProtections\u003c\/td\u003e\n\u003ctd\u003eOvercharge, Overvoltage, Short Circuit\u003c\/td\u003e\n\u003ctd\u003eOvercharge\u003c\/td\u003e\n\u003ctd\u003eOvercharge, Reverse Polarity\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVape mods and e-cigarette batteries\u003c\/li\u003e\n  \u003cli\u003eDrones and remote-control vehicles\u003c\/li\u003e\n  \u003cli\u003eHigh-drain flashlight and torches\u003c\/li\u003e\n  \u003cli\u003eRechargeable battery packs for toys and tools\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails class=\"gfai-product-faq\" open\u003e\u003csummary\u003e\u003cstrong\u003eCan this 4-slot charger handle both AA and 18650 batteries at the same time?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eYes, the IMREN I4 charges AA\/AAA NiMH and 18650 Li-ion batteries simultaneously in separate slots. Each slot operates independently for mixed chemistries.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails class=\"gfai-product-faq\" open\u003e\u003csummary\u003e\u003cstrong\u003eWhat safety features does the IMREN I4 provide for lithium and NiMH batteries?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eThe charger features overcharge, overvoltage, and short-circuit protection compliant with IEC\/EN 60335-2-29 standards.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails class=\"gfai-product-faq\" open\u003e\u003csummary\u003e\u003cstrong\u003eDoes this charger test battery capacity and internal resistance?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eYes, charging cycles include real-time capacity and internal resistance checks, displayed per slot.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails class=\"gfai-product-faq\" open\u003e\u003csummary\u003e\u003cstrong\u003eIs there a USB Type-C input and mobile charging support?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eIMREN I4 uses standard USB Type-C (5V\/2A) input and supports mobile charging via its 5VDC output (max 2A) for use as a power bank.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails class=\"gfai-product-faq\" open\u003e\u003csummary\u003e\u003cstrong\u003eHow does the IMREN I4 compare to Nitecore\/XTAR chargers for drones and flashlights?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eIMREN I4 matches top-tier chargers with USB-C support, 4-bay design, and mixed chemistry flexibility, plus mobile charging function not found on some competitors. Tradeoff: maximum output current is lower than some advanced models, but sufficient for most consumer batteries.\u003c\/p\u003e\u003c\/details\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"IMREN I4 4-Slot Universal Rechargeable Battery Charger with USB Type-C Port\",\n  \"description\": \"The IMREN I4 Universal Battery Charger supports simultaneous charging of four Li-ion or NiMH batteries with adjustable current (up to 1A per slot). It features a USB Type-C port, integrated overvoltage and short circuit protection, battery capacity testing, and mobile charging capability via 5VDC booster output. Designed to fit AA, AAA, 10440, 14500, 16340, 18350, 18500, 18650, 20700, 21700, and 26650 cells, it’s ideal for users in vaping, drones, flashlights, and electric vehicle communities seeking safe, high-compatibility battery management. Key Features Multi-Battery Compatibility: Supports 1.2V NiMH and 3.6\/3.7V Li-ion\/IMR\/LiFePO4; charges AA\/AAA and high-drain cells concurrently. Independent Channel Charging: Four slots with max 1A charge current per slot for mixed batteries and chemistries. USB Type-C Input: Fast charging capability via standard USB-C (5V\/2A input). Mobile Power Output Function: Acts as a portable power bank (5VDC booster output, max 2A current). Safety Protections: Overvoltage, overcharging, and short-circuit protections; meets IEC\/EN 60335-2-29 safety standards. Battery Test Functions: Measures capacity and estimates internal resistance. Max Output: Channel 1\/4: 1000mA; Channel 2\/3: 500mA Material \u0026 Build: Durable ABS construction; compact (110×103×30mm, 200g). Comparison Table Feature IMREN I4 Nitecore D4 XTAR VC4S Slots 4 (independent) 4 4 Input USB Type-C AC\/USB Micro-USB Battery Types Li-ion, NiMH, LiFePO4 Li-ion, NiMH Li-ion, NiMH Mobile Charging Yes, 5V2A Output No No Capacity Test Yes No Yes Protections Overcharge, Overvoltage, Short Circuit Overcharge Overcharge, Reverse Polarity Applications Vape mods and e-cigarette batteries Drones and remote-control vehicles High-drain flashlight and torches Rechargeable battery packs for toys and tools Frequently Asked Questions Can this 4-slot charger handle both AA and 18650 batteries at the same time? Yes, the IMREN I4 charges AA\/AAA NiMH and 18650 Li-ion batteries simultaneously in separate slots. Each slot operates independently for mixed chemistries. What safety features does the IMREN I4 provide for lithium and NiMH batteries? The charger features overcharge, overvoltage, and short-circuit protection compliant with IEC\/EN 60335-2-29 standards. Does this charger test battery capacity and internal resistance? Yes, charging cycles include real-time capacity and internal resistance checks, displayed per slot. Is there a USB Type-C input and mobile charging support? IMREN I4 uses standard USB Type-C (5V\/2A) input and supports mobile charging via its 5VDC output (max 2A) for use as a power bank. How does the IMREN I4 compare to Nitecore\/XTAR chargers for drones and flashlights? IMREN I4 matches top-tier chargers with USB-C support, 4-bay design, and mixed chemistry flexibility, plus mobile charging function not found on some competitors. 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