A battery pack, a method of controlling the same, and an energy storage system including the battery pack are disclosed. The method includes acquiring an image data set by way of an acquisitioning system, and entering a special mode of operation that is either an interactive mode of operation or a repetitive series rendering mode of operation. The working chamber can be emptied of the working medium for a non-operating state in order to prevent a transmission of torque from the primary wheel to the secondary wheel. Elliptic curve cryptography can be used for mutual authentication between subscribers and the base station.