The GMOD Li-Ion Charging Module is a compact and efficient battery charging solution designed for single-cell lithium-ion and lithium-polymer (Li-ion/Li-Po) batteries. It provides safe and reliable charging using a constant-current / constant-voltage (CC/CV) charging profile, making it ideal for embedded, portable, and IoT applications.

The module integrates all essential charging circuitry on a small GMOD-form-factor PCB, allowing easy integration into projects without the need for complex external components. It supports USB and external DC power inputs and includes built-in protection features to ensure battery safety and longevity.

With simple connections, clear pin labeling, and stable performance, the GMOD Li-Ion Charging Module is well suited for Arduino, ESP32, ESP8266, STM32, wearable electronics, and battery-powered devices.

Interface Details

Supported Interfaces:

USB Power Input
External DC Input
Single-Cell Li-Ion / Li-Po Battery Interface

Pin Definition :

Power Input
- VIN / VBUS – USB or external DC input
- GND – Ground
Battery Connection
- B+ – Battery Positive
- B− – Battery Negative
Output (if available)
- OUT+ – Load Positive
- OUT− – Load Negative
Status (module dependent)
- CHG – Charging status indicator
- DONE / STDBY – Charge complete indicator

Applications

Single-cell Li-Ion / Li-Po battery charging
Portable electronics and handheld devices
IoT and wireless sensor nodes
Wearable electronics
Robotics and mobile projects
DIY power banks
Educational electronics and prototyping

Features

Designed for single-cell Li-Ion / Li-Po batteries
Safe CC/CV charging algorithm
USB and external power input support
Integrated charging control circuitry
Over-charge and over-current protection (module dependent)
Compact GMOD PCB design
Simple and clearly labeled connections
Low component count for easy integration