BC2-HV1 is the battery management system (BMS) control module for the B2 battery system. Installed at the top of the battery-module stack, it monitors the voltage, current and temperature of each cell, balances the modules and communicates with the inverter via CAN bus. HV1 and HV5 battery modules cannot operate without it; it is a mandatory component of every B2 battery stack.
| Parameter | Value |
| Model designation | BC2-HV1 |
| Function | BMS control module for battery stack B2 (HV1 / HV5) |
| Max. fault current | 100 A |
| Dimensions (H × W × D) | 200 × 626 × 365 mm (220 × 626 × 365 mm in older datasheets) |
| Weight | 11 kg |
| Protection rating | IP65 |
| Communication | CAN |
| Compatibility | BU2-5.0-HV1 and BU2-5.0-HV5 battery modules (1 to 5 modules) |
| Standards | IEC 62619, EN 62477-1, EN 61000-6-1/2/3/4, UN 38.3 |