Method for treating electrical energy storage unit

[0027] The same reference numerals designate the same device parts or the same method steps in all figures.

[0028] figure 1 A flow chart of the method according to the invention according to a first embodiment is shown. In a first step S1 the electrical energy storage unit is filled with a second quantity of a second electrolyte. This can take place via openings provided for this purpose or used for filling during production, which are opened for this purpose and closed again after filling. Subsequently, in a second step S2 , the maximum charge capacity of the electrical energy storage unit, that is to say the amount of charge that can be stored in the electrical energy storage unit while observing the specified piezoelectric limits, is determined. This is done for example by charging and discharging with a predefined current profile at a predefined temperature between predefined voltage levels. In a third step S3, next, the determined maximum capacity is stored in a databas