Czech startup Nimble Energy has unveiled a mobile charging service for electric cars. At the heart of the system called Nimbee is a 42 kWh battery with a maximum charging power of 40 kW for CCS and CHAdeMO chargers. The battery with 900 volt system voltage is mounted on a trailer, which the operator brings with its own electric car to the agreed charging location. There, it starts the DIRECT current charging process and then returns the battery trailer to the depot for recharging.