It is the high-voltage battery cluster control box (BMU) for Deye's BOS-G stacked battery system. It manages and monitors the high-voltage battery cluster and connects it to a compatible high-voltage inverter.
Operating Voltage: 120~750 Vdc. Nominal Charge/Discharge Current: 100 A; Max. Charge/Discharge Current: 125 A. DC input rating 12±2% V / 4.15 A.
One HVB750V/100A control box manages a cluster of up to 12 × 5.12 kWh BOS-G battery modules.
Communication ports: CAN2.0 / RS485. LED status indicators show high-voltage on (yellow) and system alarm (red).
Operating Temperature Range: -20~65°C. Ingress Protection: IP20 (indoor / enclosed rack installation).
It uses a standard 19-inch, rack-mounted design for easy installation and maintenance within a BOS-G rack (3U-LRack / 3U-HRack).
Dimension (W×D×H): 440×570×150 mm; weight approximately 15.5 kg.


