Expansion module for increasing the capacity of the mobile battery storage unit Instagrid ONE. This expansion module allows the total capacity to be increased to up to 6.3 kWh by connecting up to three Instagrid ONE units in parallel at an output voltage of 230 V. Additionally, an island mode is supported: Uninterrupted replacement of Instagrid ONE units during ongoing operation. This article includes only the expansion module. 1–3 Instagrid ONE units are required for operation. Weight: 4.5 kg IP rating: IP54 Protection class: Class II / double insulated Operating temperature: -15 °C to 40 °C Input socket: 3 x Neutrik powerCON TRUE1 TOP® Output socket (EU): 3 x CEE 7/3 16A Output socket (CH): 3 x T23s 16 A Output voltage: 230 V AC / 50 Hz Output current: 16 A Switching time: < 20 ms Residual current device: 3 x 1P+N RCD type A, 30 mA Circuit breaker: 1P B16