In an embodiment, disconnecting a supply of an electrical charging is described. In an embodiment, a device comprises: a reception configured to receive an electric current. A supply configured to supply an electric current out from the device in a connection with charging a battery of an electrical device. Connectors configured to connect the device between a power unit, which supplies the electric current to the reception,and the electrical device. A switch configured to disconnect at least one of the electrical currents. A control unit configured to control the switch, wherein the control unit comprises a timer configured to control the switch according to a predetermined timing function. A housing, wherein a movement of the housing is configured to generate a stimulus that is configured to the switch for connecting the at least one of the electrical currents and reset the timer.