4S-6A LiFePO₄ (LFP) BMS — TDT Model

Overview
The TDT 4S-6A BMS is designed for 4-cell LiFePO₄ battery packs with a nominal voltage of 12.8V. It supports continuous discharge currents up to 6A and offers essential protections along with passive cell balancing, making it ideal for low-power applications such as small electronics, LED lighting, and portable power sources.

Specifications

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

• Battery Chemistry: LiFePO₄ (LFP)

• Nominal Voltage: 12.8V (3.2V × 4)

• Maximum Continuous Current: 6A

• Peak Current: 8A (short bursts)

• Balancing Type: Passive balancing

• Balance Current: Approx. 15mA–30mA

• Protection Features:

  • Over-voltage protection

  • Under-voltage protection

  • Over-current protection

  • Short-circuit protection

  • Over-temperature protection

• Communication: Typically no smart communication

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

Features

• Monitors and balances individual cell voltages

• Provides basic battery protection functions

• Compact, lightweight design

• Suitable for low-current battery packs

• Easy to install and operate

Applications

• 12.8V LiFePO₄ battery packs

• LED lighting and small electronic devices

• Portable power banks

• DIY battery projects and solar setups

Important Notes

• Designed exclusively for LiFePO₄ cells (3.2V per cell)

• Proper wiring of balance and power leads is essential

• Continuous discharge current should not exceed 6A

• No Bluetooth or advanced communication features

• Ensure proper heat management during use