13.5 kWh Home Battery with Hybrid Inverter, Three-Phase

Three modules of 4.5 kWh under the 10 kW T10 inverter, together 13.5 kWh. On single-phase, three steps of 9.3 kWh would already put you well above 27 kWh; here the same three steps land more precisely.

We see this size often in a home with both a heat pump and an electric car that mostly charges at home. A three-phase connection also lets you spread the charging load across the phases, which makes it more even than single-phase charging.

The datasheet for the 4.5 kWh module names the T10 as the inverter for up to six modules. Three modules is therefore a combination within the range AlphaESS has tested, not at the edge of it.

The price is the sum of the inverter and three battery modules, rounded down. Never more expensive than ordering separately, but complete in one go.