The family changes Ah capacity rather than system voltage. Rated capacity rises from 100Ah to 588Ah while nominal voltage remains 51.2V and maximum charging voltage remains 57.6V. That makes it easier to compare batteries inside one low-voltage architecture because the inverter voltage class does not need to change simply to obtain more stored energy. An energy storage battery still has to be checked for communication support and charge-discharge current limits before it is paired with a specific inverter. Voltage compatibility remains a separate sizing check.