Description
Micro USB charging module designed for safe, efficient charging of single 3.7V 18650 lithium cells.
Ideal for powering DIY electronics, Arduino and Pi projects.
Features onboard protection circuitry and dual LED indicators.
Connect via micro USB or solder pads for easy integration. Includes battery overcharge, over-discharge and over-current protection.
- Product: 18650 Lithium Battery Charging Module – Micro USB
- Type: 1A Linear Charger with Protection Circuit
- Input Voltage: 4.5V to 5.5V (via Micro USB or solder pads)
- Output Voltage: 4.2V max
- Quantity: 1 Module
- Designed for 3.7V single-cell lithium-ion batteries
- Input via Micro USB or solder terminals
- Charging current up to 1A
- Full charge cut-off voltage: 4.2V ±1%
- Battery under-voltage protection: 2.5V
- Battery over-current protection: 3A
- Dual LED indicators (Red: Charging, Green: Full)
- Compact module: 25mm x 19mm x 10mm
What’s Included:
- 1 x 18650 Lithium Battery Charging Micro USB Module
Great For:
- Charging loose 18650 cells
- DIY battery packs
- Arduino, ESP32, and IoT projects
- Powering wearable and portable electronics
- Battery management in DIY tools and toys
Usage Tips:
- Connect battery to B+ / B- terminals
- Connect load/device to OUT+ / OUT- terminals
- Use a power supply rated at 1A or higher for reliable charging
- First-time use may require connecting 5V to activate protection circuit
- Charging current can be modified by changing the Rprog resistor (details available online)
