4S-30A LiFePO₄ (LFP) BMS — JLGW Model

Overview
The JLGW 4S-30A BMS is designed for 4-cell LiFePO₄ battery packs (nominal 12.8V) with a continuous discharge current of up to 30A. It features essential protection functions and passive balancing, suitable for mid-range power applications.

Specifications

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

• Battery Chemistry: LiFePO₄ (LFP)

• Nominal Voltage: 12.8V (3.2V × 4)

• Maximum Continuous Current: 30A

• Peak Current: 40A (short duration)

• Balancing Type: Passive balancing

• Balance Current: Approx. 30mA–60mA

• Protection Features:

  • Over-voltage protection

  • Under-voltage protection

  • Over-current protection

  • Short-circuit protection

  • Over-temperature protection

• Communication: Generally no smart communication included

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

Features

• Monitors individual cell voltages for safety

• Passive balancing to maintain cell health

• Provides essential battery protection features

• Compact design suitable for various applications

• Low power consumption and reliable performance

Applications

• 12.8V LiFePO₄ battery packs

• Small electric vehicles and scooters

• Solar storage and backup systems

• DIY power packs and portable electronics

Important Notes

• Only compatible with LiFePO₄ cells (3.2V per cell)

• Correct wiring of balance and power leads is critical

• Continuous discharge current should not exceed 30A

• No Bluetooth or advanced data communication features

• Adequate cooling recommended for heavy use