{"product_id":"18w-lithium-battery-fast-charger-module-type-c-led-indicator","title":"18W Type-C Lithium Battery Fast Charger Module | LED Indicator","description":"\u003cp\u003ePower your DIY builds with confidence using this compact \u003cstrong\u003e18W Lithium Battery Fast Charger Module\u003c\/strong\u003e. Designed for makers, hobbyists, and engineers, this Type-C boost charging module delivers rapid, multi-protected charging and discharging for 3.7V\/4.2V lithium batteries — ideal for drone battery packs, power banks, and custom electronics projects.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSingle Type-C Port Input\/Output:\u003c\/strong\u003e Supports fast charging in and power delivery out through one convenient USB-C port — no need for multiple connectors.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLED Battery Level Indicator:\u003c\/strong\u003e Intuitive LED lights give you a real-time, at-a-glance view of charging status and remaining battery level. Press the button to check charge level anytime.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e18W Fast Charging:\u003c\/strong\u003e Supports 5V 3A \/ 9V 2A \/ 12V 1.5A charging and discharging protocols for fast, efficient power delivery.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Compatibility:\u003c\/strong\u003e Works with 3.7V\/4.2V lithium batteries (default) and 3.85V\/4.35V batteries via reserved shorting pad — perfect for drone batteries, DIY power banks, and more.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eComprehensive Multi-Protection:\u003c\/strong\u003e Built-in overvoltage, undervoltage, overcurrent, overcharge, overdischarge, and over-temperature protection safeguards your batteries and extends service life.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact PCB Design:\u003c\/strong\u003e Tiny 28×18×5mm footprint with reserved M2 fixing holes makes it easy to integrate into space-constrained builds.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCharging\/Discharging Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e18W (5V 3A \/ 9V 2A \/ 12V 1.5A)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupported Battery Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.7V\/4.2V (default); 3.85V\/4.35V (reserved shorting pad)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePCB Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e28 × 18 × 5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFixing Holes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eM2 screw compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Battery-End Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 5A\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRecommended Battery Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10,000 mAh or greater\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in Mainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eImportant Usage Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePolarity:\u003c\/strong\u003e Always observe the correct positive\/negative orientation at the battery interface. Incorrect connection can cause a fire hazard.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInitial Setup:\u003c\/strong\u003e Before connecting the battery, connect the charger first. A steady indicator light confirms the module is functioning normally. Once verified, solder the battery, then connect the charger to activate the module before enabling external output.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCable Requirements:\u003c\/strong\u003e Use silicone cable rated at 20AWG or thicker for battery connections. Keep connection length under 7.5 cm for optimal performance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBattery Recommendation:\u003c\/strong\u003e Use a high-capacity (10,000 mAh+), low-internal-resistance, high-discharge-rate lithium battery for best results. Old batteries with high internal resistance may cause inaccurate charge level readings.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeat Management:\u003c\/strong\u003e During fast charging, the module will generate noticeable heat. On-chip over-temperature protection will reduce current if needed. For sustained full-power operation, attach a heatsink to the back of the chip. Do not touch the heat dissipation area during charging.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProtocol Compatibility:\u003c\/strong\u003e The Type-C port requires a device with a recognized charging protocol on the CC terminal. Devices without protocol support will not trigger output.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e1× 18W Lithium Battery Fast Charger Module\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor more information on safe DIY electronics practices and electrical safety standards, visit CPSC Electrical Safety.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What lithium battery voltages does this fast charger module support?\u003c\/h4\u003e\n\u003cp\u003eA: The module supports 3.7V\/4.2V lithium batteries by default. It also supports 3.85V\/4.35V batteries through a reserved shorting pad on the PCB, giving you flexibility for a wider range of lithium cell types used in drones and power banks.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can this module charge and discharge at the same time?\u003c\/h4\u003e\n\u003cp\u003eA: This module is designed for charging or discharging through the same Type-C port. It is not intended for simultaneous pass-through charging and discharging. Always follow the setup sequence in the usage notes for safe operation.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is the recommended battery capacity for this 18W charger module?\u003c\/h4\u003e\n\u003cp\u003eA: Due to the high power output of this fast charging module (up to 5A at the battery end), it is recommended to use a lithium battery with a capacity of 10,000 mAh or greater with a low internal resistance and a high discharge rate for safe and accurate operation.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Why does my charger module get warm during fast charging?\u003c\/h4\u003e\n\u003cp\u003eA: At 18W, the module processes significant power in a very compact form factor. Some heat generation is normal. The onboard over-temperature protection will automatically reduce charging current to keep the chip safe. For sustained high-power use, adding a heatsink to the back of the PCB is strongly recommended.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What lithium battery voltages does this fast charger module support?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The module supports 3.7V\/4.2V lithium batteries by default. It also supports 3.85V\/4.35V batteries through a reserved shorting pad on the PCB, giving you flexibility for a wider range of lithium cell types used in drones and power banks.\"}}, {\"@type\": \"Question\", \"name\": \"Can this module charge and discharge at the same time?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This module is designed for charging or discharging through the same Type-C port. It is not intended for simultaneous pass-through charging and discharging. 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