A compact USB-C lithium battery charger module with built-in protection circuits. Uses constant-current/constant-voltage (CC/CV) charging to safely charge single-cell 3.7V lithium batteries from any USB-C power source.

LED indicators show charging status—red while charging, green when fully charged.

Key Features

• USB-C Input – Modern connector for easy power connection
• CC/CV Charging – Safe, efficient charging method for lithium cells
• Built-in Protection – Overcharge, over-discharge, and over-current protection
• LED Indicators – Red (charging) / Green (complete)
• Compact Size – Only 25 × 16.5mm
• 1A Max Current – Fast charging capability

Specifications

• Input Voltage – 4.35-6V (5V recommended)
• Charge Cut-off Voltage – 4.2V ±1%
• Maximum Charge Current – 1000mA
• Overcharge Protection – 4.28V
• Discharge Protection – 3.0V
• Over-current Protection – 3A
• Dimensions – ~25 × 16.5mm

Ideal For

• DIY battery-powered projects
• Portable electronics
• Solar charging systems
• Custom power banks
• IoT devices with battery backup