300A BMS

The 300A BMS category represents the highest-performance battery management systems in the JIKONG lineup. These boards are engineered for extreme-current applications where standard BMS units simply cannot keep up.

What Is a 300A BMS?

A 300A Battery Management System supports a continuous current of 300 amps with peak handling up to 350A. These boards manage high-cell-count lithium battery packs (up to 24S, 72V-87.6V for LiFePO₄) and incorporate heavy-duty MOSFETs with ultra-low RDS(on) for superior thermal performance under full load. Active balancing at 2A ensures all cells stay perfectly matched, even in large battery banks.

Common Applications

  • Commercial EV Conversions: Full car, truck, and bus electric drivetrain battery systems
  • Large-Scale Energy Storage: Commercial and industrial ESS installations
  • Electric Boats & Marine: High-power marine propulsion systems
  • Heavy-Duty Utility Vehicles: Mining vehicles, construction equipment, and agricultural EVs
  • Telecom & Data Center Power: High-capacity backup battery systems

What Makes 300A BMS Different?

At 300 amps, thermal management becomes critical. JIKONG 300A BMS boards use upgraded MOSFETs with enhanced heat dissipation, allowing sustained full-load operation without thermal throttling. The integrated Bluetooth module lets you monitor every cell's voltage, temperature, and balance status in real time through the mobile app. RS485 and CAN bus communication enable seamless integration with inverters, chargers, and battery display screens.

Each 300A BMS unit includes a complete accessory package: main unit, communication board, three communication cables, balance wires, activation switch wire, heating wire, B+ cable, dry contact terminal block, and busbar with terminal hardware. All products are backed by JIKONG's 3-year manufacturer warranty with technical support from JKVOLT. Contact us for bulk pricing on orders of 50+ units.