Abstract: An energy storage system includes a first system energy interface, a first storage module, and a first processing module. The first storage module includes a first energy interface, a first cell stack comprising a plurality of individual cells, and a first communication interface. The first processing module includes a second energy interface, a second communication interface, a first monitoring module, a DC-10 DC converter, a third communication interface, and the first system energy interface. The system is configured to electrically couple the first memory module to a second memory module depending on the first processing module and a second processing module.