Device for determining the energy level of an energy store of a mobile data carrier

The invention relates to the energy memory energy state's the device for special carrier data, wherein the data carrier, outlet of the instability DC voltage according to the energy storage with the tool of the voltage stabilizer for stability DC voltage of the mobile carrier data power supply. The is connected to the processing circuit is energy storage, the processing circuit lock and measuring to the duration of charging of the auxiliary capacitor comprising an auxiliary capacitor and measuring circuit. Arranged in the output end connected with a description to the energy storage the number of said energy.