48S 150V Master Slave High Voltage BMS With Active Balancing

E&J Master Slave High Voltage BMS

Our Master Slave High Voltage BMS is a mature, industrial-grade battery management system designed for high-power, high-voltage energy storage and large-scale battery pack applications. Built with advanced active balancing technology, it ensures efficient, real-time cell voltage equalization to maximize battery performance, extend service life, and enhance overall system stability.

Capable of supporting high current and high voltage configurations, the system is ideal for series-connected, parallel-connected, or series-parallel combined battery packs, making it highly versatile for energy storage systems, UPS, industrial power backup, and large battery projects. We provide full customized solutions tailored to your project’s voltage, current, capacity, and application requirements, backed by reliable after-sales technical support throughout deployment and operation.

Equipped with standard RS485 and CAN communication interfaces, the BMS seamlessly communicates with inverters, PLCs, monitoring systems, and other external equipment for smooth system integration and intelligent control. The master unit comes integrated in a rugged, all-in-one cabinet that includes a high-precision shunt, contactors, built-in DC-DC power supply, LCD display, physical on/off switch, standard wiring terminals, and complete protection circuitry.

Additional highlights include over-voltage, under-voltage, over-current, over-temperature, short-circuit, and reverse polarity protection, as well as real-time voltage, current, temperature, and SOC/SOH monitoring. The modular master-slave architecture supports flexible expansion for high-voltage stacks, ensuring safe, stable, and maintenance-efficient operation even in demanding working environments.