BYD Battery-Box Premium HVM 8.3 — 8.3kWh High-Voltage LiFePO4 (102.4V)

The BYD Battery-Box Premium HVM 8.3 is a high-voltage (HV) LiFePO4 battery system operating at 102.4V nominal — designed exclusively for high-voltage hybrid string inverters that accept battery input in the 80–500V range (Fronius Primo GEN24 Plus, SMA Sunny Tripower Storage, Sungrow SH series). Unlike 48V low-voltage systems, HV battery systems eliminate the high-current DC cabling losses inherent to 48V designs, enabling more efficient energy transfer at a fraction of the wire cross-section. Each HVM 8.3 module holds 8.3kWh. Stack 1–5 modules on a shared HVM Mounting Bracket + BMS Box for up to 41.4kWh total. Modules connect with standardized HV busbars — no high-current cabling, minimal installation complexity. Integrated BMS in the HVM Base Box manages all cell strings, CAN communication with the inverter, thermal protection, and ground fault detection. BYD cobalt-free LiFePO4 chemistry: inherently safer than NMC, zero cobalt supply chain risk, >6000 cycle life. Module voltage: 102.4V (32 cells × 3.2V). Operating range: 90–115V. Max continuous discharge: 25A (2.56kW per module). CAN 2.0B communication. UL 9540 certified. 10-year product warranty. Weight per module: 56.4kg. Dimensions: 810 × 525 × 181mm. IP55.