The invention relates to a medical device (1.1； 1.2； 1.3) with an energy supply (5.1； 5.2； 5.3； 5.4； 5.5； 5.6； 5.7； 5.8； 5.9), wherein the energy supply (5.1； 5.2； 5.3； 5.4； 5.5； 5.6； 5.7； 5.8； 5.9) comprises at least two energy sources (11), of which at least one energy source (11) constitutes a backup energy source, and wherein a control unit (21) for monitoring and controlling the energy supply (5.1； 5.2； 5.3； 5.4； 5.5； 5.6； 5.7； 5.8； 5.9) is provided, the control unit (21) being designed such that it can detect a fault in the energy sources (11) and disconnect the faulty energy source (11). The invention relates further to a charging station (30) for an energy supply (5.1； 5.2； 5.3； 5.4； 5.5； 5.6； 5.7； 5.8； 5.9) of such a medical device (1.1； 1.2； 1.3).
