Parameterizable energy supply device, comprising: a communication interface for receiving parameterizing data via a communication network; and a processor, which is configured to choose an output characteristic of the parameterizable energy supply device from a plurality of prestored output characteristics, in order to set the output characteristic, wherein the output characteristic is one of the following output characteristics: a voltage-current output characteristic (400, 401), a voltage-current output characteristic (400, 401) with a current limitation, a foldback output characteristic, a hiccup-mode output characteristic, a fuse-mode output characteristic, an output characteristic with a dynamic boost, or a charging characteristic of a storage medium, wherein the processor is configured to increase or decrease a gradient of the output characteristic when reaching an amplitude threshold by an output voltage U or an output current I of the parameterizable energy supply device or change a gradient direction of the gradient, characterized in, that the processor is configured to set an open-circuit output voltage U 0, a nominal load output voltage U NOM, a nominal load output current I NOM, a short-circuit output current Isc, a dynamic output current I DYN, a predetermined gradient and a time interval T DYN in order to set the output characteristic, wherein, for implementing the output characteristic with a dynamic boost, the processor is configured to operate the parameterizable energy supply device with a dynamic output current I DYN in a voltage regulation from a nominal load output current I NOM for a time interval T DYN, after the time interval t DYN expires, to reset the output current I to the nominal load output current I NOM or a current threshold, and in the further course to implement the further limitation procedure with a foldback output characteristic, a fuse-mode output characteristic or a hiccup-mode output characteristic, in which the output current I reaches the short-circuit output current I SC, and wherein the processor is further configured to operate the parameterizable energy supply device either as a voltage source or as a current source and for this purpose to swap the voltages and currents against each other. a communication interface for receiving parameterizing data via a communication network; and a processor, which is configured to choose an output characteristic of the parameterizable energy supply device from a plurality of prestored output characteristics, in order to set the output characteristic, wherein the output characteristic is one of the following output characteristics: a voltage-current output characteristic (400, 401), a voltage-current output characteristic (400, 401) with a current limitation, a foldback output characteristic, a hiccup-mode output characteristic, a fuse-mode output characteristic, an output characteristic with a dynamic boost, or a charging characteristic of a storage medium, wherein the processor is configured to increase or decrease a gradient of the output characteristic when reaching an amplitude threshold by an output voltage U or an output current I of the parameterizable energy supply device or change a gradient direction of the gradient, characterized in, that the processor is configured to set an open-circuit output voltage U 0, a nominal load output voltage U NOM, a nominal load output current I NOM, a short-circuit output current Isc, a dynamic output current I DYN, a predetermined gradient and a time interval T DYN in order to set the output characteristic, wherein, for implementing the output characteristic with a dynamic boost, the processor is configured to operate the parameterizable energy supply device with a dynamic output current I DYN in a voltage regulation from a nominal load output current I NOM for a time interval T DYN, after the time interval t DYN expires, to reset the output current I to the nominal load output current I NOM or a current threshold, and in the further course to implement the further limitation procedure with a foldback output characteristic, a fuse-mode output characteristic or a hiccup-mode output characteristic, in which the output current I reaches the short-circuit output current I SC, and wherein the processor is further configured to operate the parameterizable energy supply device either as a voltage source or as a current source and for this purpose to swap the voltages and currents against each other.