An implantable cardioverter-defibrillator system (10) with at least one or more stimulation units (1, 3, 5), one or more detection units (2), one or more control units (4), wherein the at least one control unit is connected to the at least one stimulation unit and to the at least one detection unit, two or more electrode poles (6.1, 6.2, 6.3) for contact with body tissue and one or more high voltage capacitors (5) which may be charged by one or more charging units, wherein the at least one charging unit is connected to the at least one control unit.