The 1S Battery Management System (BMS) is a compact, efficient, and reliable solution for charging single-cell Li-ion batteries safely. Designed around the TP4056 charger IC, this module provides precise constant current/constant voltage (CC/CV) charging, ensuring optimal battery performance and longevity. Its user-friendly design includes charging status indicators and accurate voltage regulation, making it ideal for a wide range of electronics projects.

Key Features

• Supports single-cell (1S) Li-ion batteries
• TP4056-based charging IC
• Constant Current / Constant Voltage (CC/CV) charging
• 1A fixed charging current
• 4.2V fixed charging voltage
• 5V input supply
• Charging status indicators

Specifications

• Input Voltage: 5V
• Charging Current: 1A
• Charge Voltage: 4.2V
• Cell Configuration: 1S (single-cell)
• Protection: Accurate voltage regulation, overcharge protection

Typical Applications

• Power banks
• Portable electronic devices
• IoT and embedded systems
• DIY battery-powered circuits