Description
This Type C USB 18650 Lithium Battery Charger Module is designed for safely charging single cell 3.7V Li-ion batteries with precision control and built in protection.
Compact and easy to integrate, it can be powered via a USB C cable or directly through the input solder pads.
Connect your battery to B+ and B- terminals, and your output load to OUT+ and OUT- terminals.
The module includes overcharge, undervoltage, and over-current protection, making it ideal for DIY power banks, robotics, and portable electronics.
- Type: Linear Lithium Battery Charging Module
- Battery Type: 1-cell 3.7V 18650 / Li-ion
- Input Voltage: 4.5V – 5.5V (via USB-C or solder pads)
- Charging Voltage: 4.2V ± 1%
- Charging Current: Up to 1A
- Output Current Max: 1A
- Overcurrent Protection: 3A
- Undervoltage Protection: 2.5V
- Charge Precision: ±1.5%
- Input Interface: USB Type-C
- Status LEDs:
- Red: Charging
- Green: Fully Charged
- Operating Temp Range: -10°C to +85°C
- Polarity Protection: Not included – ensure correct connections
- Board Size: 25mm x 19mm x 10mm
- Custom Charging Current: Adjustable via Rprog resistor (mod info available online)
What’s Included:
- 1x 18650 Lithium Battery Charger Module (USB Type-C)
Great For:
- DIY power banks
- Charging single-cell 18650 batteries
- Robotics and microcontroller projects
- Portable device battery management
- STEM education and prototyping
Usage Tips:
- Connect a battery to B+ and B−; connect output device to OUT+ and OUT−
- First-time use: Apply 5V input to activate output protection circuit
- Use a power supply capable of at least 1A output
- Use external protection or a protected battery for added safety
- LED indicators show real-time charge status
