4S-10A LiFePO₄ (LFP) BMS — TDT Model

Overview
The TDT 4S-10A BMS is a compact and reliable battery management system designed for 4-cell LiFePO₄ battery packs (nominal 12.8V). It supports up to 10A continuous discharge current and provides essential protections along with passive balancing, ideal for small power applications.

Specifications

• Cell Configuration: 4S (4 cells in series)

• Battery Chemistry: LiFePO₄ (LFP)

• Nominal Voltage: 12.8V (3.2V × 4)

• Maximum Continuous Current: 10A

• Peak Current: 15A (short bursts)

• Balancing Type: Passive balancing

• Balance Current: ~20mA–40mA

• Protection Features:

  • Over-voltage

  • Under-voltage

  • Over-current

  • Short-circuit

  • Over-temperature

• Communication: Typically no smart communication

• Operating Temperature Range: -20°C to +60°C

Features

• Individual cell voltage monitoring

• Passive balancing during charging

• Basic but essential battery protections

• Compact and lightweight design

• Ideal for low-current battery packs

Applications

• 12.8V LiFePO₄ battery packs

• Small electronic devices and LED lighting

• Portable power and backup systems

• DIY solar and battery projects

Important Notes

• Compatible only with LiFePO₄ cells (3.2V per cell)

• Proper wiring of balance and power leads required

• Do not exceed continuous 10A load current

• No Bluetooth or advanced communication support

• Ensure proper ventilation during operation