Energy storage systems, especially accumulators, are the key technologies in the transition to a climate-neutral society. Forecasts assume an increasing share of electric vehicles in new vehicle sales. In order to enable this growth, fast charging of the battery is crucial. The more convenient, user-friendly and routine the use of accumulators becomes, the less doubts consumers have about battery electric vehicles (BEVs), e.g. Fear of insufficient range. Accordingly, shorter loading times would significantly increase the acceptance of the technology.