4S-100A LiFePO₄ (LFP) BMS — JBD Model

Overview

This BMS (Battery Management System) is designed to manage a 4-cell LiFePO₄ battery pack in series (4S), supporting continuous currents up to 100A. It ensures safe operation by monitoring and protecting each cell during charge and discharge.

Specifications

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

• Battery Chemistry: LiFePO₄ (LFP)

• Nominal Voltage: ~12.8V (3.2V nominal per cell × 4)

• Maximum Continuous Current: 100A

• Peak Current: Typically higher for short bursts (e.g., 150A+, varies by model)

• Balancing: Passive balancing of individual cells

• Protection Functions:

  • Over-voltage protection

  • Under-voltage protection

  • Over-current protection

  • Short-circuit protection

  • Over-temperature and under-temperature protection

• Communication:

  • Optional Bluetooth module (for real-time monitoring via phone app)

  • UART / RS485 / CAN (depending on model)

• Operating Temperature Range: -20°C to +70°C (typical)

• Balance Current: Usually around 30-50mA

Features

• Real-time cell voltage monitoring

• Automatic balancing to maintain battery health

• Supports high discharge currents (up to 100A continuous)

• Safety cut-offs to prevent damage or hazards

• Compact and reliable JBD design widely used in DIY and commercial battery packs

Applications

• Electric bikes and scooters with LFP packs

• Solar energy storage and backup systems

• High-power portable power stations

• Electric vehicles requiring robust 4S LFP battery management

Important Notes

• Ensure you use the BMS with LiFePO₄ cells only.

• Correct wiring is critical—follow the manufacturer’s wiring diagram carefully.

• Cooling or ventilation may be necessary at high continuous currents to prevent overheating.

• Verify compatibility with your charger and load specifications.

• JBD BMS often supports firmware upgrades and Bluetooth monitoring apps (e.g., via “JBD BMS” app).