TP5100 1S 2S 2A Battery Charging Module

The TP5100 Battery Charger Board is a compact, high-speed switching charger module designed to charge single-cell (1S / 4.2V) or double-cell (2S / 8.4V) lithium-ion and lithium-polymer batteries. Unlike older linear chargers like the TP4056 battery charging module, the TP5100 uses a buck-switching design that generates significantly less heat, delivers up to 2A fast charging current, and accepts a wider input voltage range from 5V to 15V.

Key Features & Benefits of TP5100

• Dual-Cell Flexible Support: Easily switch between 1S (4.2V single cell) and 2S (8.4V dual series cells) charging by bridging the “SET” solder pads on the PCB.
• Fast 2A Charging: Provides up to 2A adjustable charging current, drastically reducing total charging time compared to standard 1A modules.
• Efficient Buck Switching: High-frequency 400kHz switching architecture minimizes thermal buildup and maximizes energy efficiency.
• Wide Voltage Range: Accepts 5V–15V DC input voltage, making it easy to power with standard 5V wall adapters, 9V transformers, or 12V power supplies.
• Comprehensive Built-in Protections: Features over-current protection, under-voltage protection, over-temperature cutoff, short-circuit safety, and reverse-battery protection.
• Visual LED Status: Supports dual-LED status indication (red light for charging, blue/green light for fully charged or standby).

Technical Specifications:

• Input Voltage Range: 5-15V DC
• Output Voltage Target: 4.2V (1S default) or 8.4V (2S bridged).
• Maximum Charging Current: 2A (programmable via current-sense resistors).
• Switching Frequency: 400 KHz
• Operating Temperature: -40°C to +85°C
• Module Dimensions: ~25mm x 17mm