TDT 4S 50A BMS with Balancing for LiFePO4 Batteries

TDT 4S 50A Battery Management System (BMS) designed for 4-series LiFePO4 battery packs. The board protects against overcharge, over-discharge, overcurrent and short circuits.

The integrated balancing function helps maintain equal cell voltages during charging. Voltage differences between cells can reduce battery performance and lifespan. The BMS continuously monitors cell conditions and performs balancing when required.

Suitable for high-power LiFePO4 battery packs used in power tools, energy storage systems, electric bicycles, solar applications and other demanding equipment.

Technical Features

• Manufacturer: TDT
• Type: BMS with balancing
• Battery chemistry: LiFePO4
• Battery configuration: 4S
• Full charge voltage: 14.4–14.7 V
• Minimum battery voltage: 10–12.0 V
• Balancing current: 30 mA
• Balancing voltage: 3.8 V per cell
• Continuous current: 50 A
• Peak current: up to 120 A
• Suitable for high surge current applications
• Balance connector included
• Balance wire length: approx. 40 cm
• Dimensions: 50 x 74 x 8 mm

Notes

• Designed only for 4S LiFePO4 battery packs.
• Not suitable for Li-Ion (3.6 V / 3.7 V) or Li-Po batteries.
• The wiring diagram shown is a typical 3S example. For a 4S pack, one additional cell must be connected in series.
• It is recommended to verify that all cells have similar voltage before first use.