It indicates the maximum charge/discharge current supported by the larger model on its 48V battery platform. At 18kW, a low-voltage battery system can carry very high current, so the battery BMS, parallel battery modules, conductors, busbars, fuses and disconnects become central design elements. A 48V inverter should not be paired with a battery bank only because the nominal voltage matches. The storage system also needs enough current capability and thermal margin to support the inverter’s real operating demand.
