Operating strategy for the power management of an electric vehicle for the VKM start request of a range extender

The method involves determining (2) the currently available power of an electrical storage device based on fulfillment (1) of a predetermined activation condition. Determination is performed (3) to check whether the currently available power exceeds the power threshold value. The internal combustion engine is activated (6), when the currently available power exceeds the power threshold value. The currently available power of the electrical storage device is determined again, when the currently available power is less than the power threshold value.