4S-100A LiFePO₄ (LFP) BMS — JBD Model

Overview
The JBD 4S-100A BMS is designed for 4-series LiFePO₄ battery packs with a nominal voltage of 12.8V. It supports high continuous discharge currents up to 100A and offers essential protection, passive cell balancing, and advanced communication options for reliable battery management.

Specifications

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

• Battery Chemistry: LiFePO₄ (LFP)

• Nominal Voltage: 12.8V (3.2V × 4)

• Maximum Continuous Current: 100A

• Peak Current: Typically 120A to 150A (short bursts)

• Balancing Type: Passive balancing

• Balance Current: Approximately 30mA to 80mA

• Protection Features:

  • Over-voltage protection

  • Under-voltage protection

  • Over-current protection

  • Short-circuit protection

  • Over-temperature protection

  • Under-temperature protection

• Communication:

  • Bluetooth (optional)

  • UART / RS485 / CAN

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

Features

• Individual cell voltage monitoring and balancing

• High-current continuous discharge capability at 100A

• Comprehensive safety protections for voltage, current, and temperature

• Bluetooth-enabled monitoring and configuration via JBD app (model dependent)

• Compact and durable design suitable for high-power 4S battery packs

Applications

• 12.8V LiFePO₄ battery packs requiring high current output

• Electric scooters, power tools, and compact EVs

• Solar energy storage and off-grid power supplies

• Portable battery packs and backup power systems

• DIY 4S high-current battery projects

Important Notes

• Intended for LiFePO₄ (3.2V per cell) batteries only

• Proper wiring of balance leads and main terminals is critical

• Charger and load currents must stay within 100A continuous rating

• Bluetooth and smart features available on select BMS models

• Adequate cooling recommended for sustained high current use