4S-15A LiFePO₄ (LFP) BMS — SLCT Model

Overview
The SLCT 4S-15A BMS is a compact battery management system for 4-cell (12.8V) LiFePO₄ battery packs. It supports up to 15A continuous discharge and provides standard safety protections along with passive balancing, making it well-suited for small to medium-power applications.

Specifications

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

• Battery Chemistry: LiFePO₄ (LFP)

• Nominal Voltage: 12.8V (3.2V × 4)

• Maximum Continuous Current: 15A

• Peak Current: 20A (short bursts)

• Balancing Type: Passive balancing

• Balance Current: Approx. 20mA–40mA

• Protection Features:

  • Over-voltage protection

  • Under-voltage protection

  • Over-current protection

  • Short-circuit protection

  • Over-temperature protection

• Communication: Not supported

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

Features

• Basic BMS with reliable protection for 4S LiFePO₄ packs

• Passive cell balancing during charging

• Compact and lightweight for portable setups

• Low power consumption and easy installation

• Cost-effective solution for low-to-mid current needs

Applications

• 12.8V LiFePO₄ battery packs

• LED lighting systems

• Power banks and small inverters

• Solar-powered storage setups

• DIY battery projects and robotics

Important Notes

• For use only with LiFePO₄ chemistry (3.2V per cell)

• Ensure correct wiring of balance leads and power terminals

• Continuous current should not exceed 15A

• Not intended for high-drain devices or large battery systems

• No smart communication (Bluetooth, UART, etc.)