Description
Super-Small 18650 3.7V 4.2V Type-C USB Lithium Battery Charging Module Pad with Protection
The USB Type-C Lithium Battery Charging Board Module is a compact and high-efficiency charger designed to safely charge 3.7V Li-ion or Li-Polymer batteries.
It features a Type-C USB input port and an onboard charging control chip that manages the charging process with over-voltage, over-current, and short-circuit protection. The module provides a stable 5V input and 1A charging current, making it ideal for DIY electronics, battery packs, wearable devices, and portable projects.
With its integrated charging IC, this board ensures safe and reliable battery charging through automatic cutoff once the battery reaches full capacity.
Key Features
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USB Type-C input port for easy power connection.
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Supports 3.7V lithium-ion / Li-Po battery charging.
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Constant current / constant voltage (CC/CV) charging mechanism.
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Built-in protection – overcharge, over-discharge, short-circuit, and reverse polarity.
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LED indicators for charging and full-charge status.
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Compact and lightweight – perfect for DIY and embedded projects.
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Plug-and-play design, no soldering needed for testing setups.
Technical Specifications
| Specification | Details |
|---|---|
| Input Port | USB Type-C |
| Input Voltage | 4.5V – 5.5V DC |
| Output Voltage | 3.7V – 4.2V DC |
| Charging Current | 1A (typical) |
| Battery Type | 3.7V Lithium-ion / Lithium Polymer |
| Charging Chip | TP4056 / Equivalent IC |
| Protection Features | Over-voltage, over-current, short-circuit, reverse polarity |
| LED Indicators | Red (Charging), Blue/Green (Full Charge) |
| Dimensions | Approx. 10mm × 10mm × 5mm |
| Mount Type | Solder pad / PCB mount |
| Operating Temperature | –10°C to +85°C |
Applications
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Charging single-cell lithium batteries.
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DIY electronics and embedded projects.
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Portable devices, power banks, and LED projects.
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Wearable electronics and IoT devices.
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Arduino, Raspberry Pi, and ESP32 projects.