A system for charging a rechargeable battery of an electric vehicle, in which the electric vehicle is provided with an electric drive motor, a generator generating a first output alternating current, an internal combustion engine, which mechanically drives the generator and can be started during a driving mode of the electric vehicle, and a first electric plug-in charging device, wherein - the generator can be used as an electric power source for supplying the battery with charging power after the internal combustion engine has been started, in the driving state of the electric vehicle, - the first electric plug-in charging device is formed geometrically in such a way that a single-phase AC power mains delivering a second output alternating current can be connected, by means of a first charging cable, to the first electric plug-in charging device so as to supply the battery with charging power as an electric power source in the switched-off state of the electric vehicle, - a second electric plug-in charging device is integrated in the electric vehicle, - to which, by means of a second charging cable, a DC charging station delivering a first direct current can be connected in the switched-off state of the electric vehicle, so that, in the switched-off state of the electric vehicle, the DC charging station can also be used simultaneously with the single-phase AC power mains as an electric power source for supplying the battery with charging power, - and wherein the first direct current can be interrupted by a DC contactor for safety reasons or when the full charge level of the battery has been reached, characterised in that - the first electric plug-in charging device is designed for a maximum electric voltage load of at least 240 volts and a maximum current strength of at least 32 amperes, - in that the first output alternating current is rectified by a first AC/DC converter and a second AC/DC converter connected in parallel with the first AC/DC converter into a second direct current, - in that the first AC/DC converter is designed for a maximum input power of at least 230 volts x 16 amperes, and the second AC/DC converter is designed for a maximum input power of at least 230 volts x 16 amperes, and - in that the second AC/DC converter and the DC contactor are geometrically integrated in a housing of a combination charging unit and the parallel connection of the first AC/DC converter to the second AC/DC converter is established outside the combination charging unit or at the combination charging unit, wherein the second AC/DC converter is integrated in the combination charging unit by means of clips, screws or an insertion mechanism, in such a way that said second AC/DC converter can be mechanically disconnected. - the generator can be used as an electric power source for supplying the battery with charging power after the internal combustion engine has been started, in the driving state of the electric vehicle, - the first electric plug-in charging device is formed geometrically in such a way that a single-phase AC power mains delivering a second output alternating current can be connected, by means of a first charging cable, to the first electric plug-in charging device so as to supply the battery with charging power as an electric power source in the switched-off state of the electric vehicle, - a second electric plug-in charging device is integrated in the electric vehicle, - to which, by means of a second charging cable, a DC charging station delivering a first direct current can be connected in the switched-off state of the electric vehicle, so that, in the switched-off state of the electric vehicle, the DC charging station can also be used simultaneously with the single-phase AC power mains as an electric power source for supplying the battery with charging power, - and wherein the first direct current can be interrupted by a DC contactor for safety reasons or when the full charge level of the battery has been reached, characterised in that - the first electric plug-in charging device is designed for a maximum electric voltage load of at least 240 volts and a maximum current strength of at least 32 amperes, - in that the first output alternating current is rectified by a first AC/DC converter and a second AC/DC converter connected in parallel with the first AC/DC converter into a second direct current, - in that the first AC/DC converter is designed for a maximum input power of at least 230 volts x 16 amperes, and the second AC/DC converter is designed for a maximum input power of at least 230 volts x 16 amperes, and - in that the second AC/DC converter and the DC contactor are geometrically integrated in a housing of a combination charging unit and the parallel connection of the first AC/DC converter to the second AC/DC converter is established outside the combination charging unit or at the combination charging unit, wherein the second AC/DC converter is integrated in the combination charging unit by means of clips, screws or an insertion mechanism, in such a way that said second AC/DC converter can be mechanically disconnected.