By the limited information provided in their engineering video yes, it's basically a battery + BMS in the really big box and a charge controller, inverter and service disconnect in the other box. The batteries seem to be liquid cooled though.
Correction: it's a complete solar system (sans panels) packaged as an all in one system. Looks like they're trying to applelify solar
Correction: it's a complete solar system (sans panels) packaged as an all in one system. Looks like they're trying to applelify solar