3S Li-Battery Boost Charge Module

Key Specifications

Key Features

• Synchronous Boost Conversion: Efficiently steps up standard low-voltage 5V input to the necessary 12.6V output needed for a 3S pack.   

• Built-in Circuit Protection: Includes over-voltage, input under-voltage, over-temperature, and short-circuit protection.   

• Automatic Recharge: Monitors battery voltage and automatically restarts charging if voltage drops below a preset threshold.   

• Compact Footprint: Lightweight board designed to easily integrate into portable or space-constrained DIY setups.   

Pinout & Terminal Connections

• Type-C / VIN (+ / -): 5V DC Power Input   

• B+: Connect to the positive terminal of the 3S battery pack   

• B-: Connect to the negative terminal of the 3S battery pack   

Common Applications

• Portable 12V power supply packs (18650/21700 3S setups)   

• Robotics, RC cars, and IoT devices   

• Wireless speaker power modules

• Bluetooth audio amps and DIY solar-buffered electronics