A centrifuge includes a rotatable rotor and an assembly that is stationary during operation. The rotatable rotor is rotatably mounted in or on the stationary assembly by one or more mounting devices. The rotatable rotor has a rotatable drum and a drive element for rotating the drum as well as one or more electrical loads located on or in the rotor. The centrifuge includes at least one battery is also located on or in the rotor in order to supply the at least one load or the plurality of loads with electrical power. The load can include a data memory in the rotor or on the rotor. At least one actuator is provided as the at least one load.