NOVELTY - The electronic energy storage device such as a secondary cell comprises: a rechargeable electrode assembly (2), which is temporarily intended to provide an electrical energy and has two electrodes (3, 3a) of different polarity; a function device (5), which is intended to be electrically connected to the two electrodes of different polarity and which is intended to be transferred to a second state, where the electrodes of different polarity are electrically connected to one another in the second state of the function device; and a cell housing (6).    USE - The electronic energy storage device such as a secondary cell is useful in a battery (claimed), where the secondary cell is useful in motor cars.    ADVANTAGE - The electronic energy storage device can be economically manufactured with reduced size and improved working reliability, stability and resistance and without damage.    DETAILED DESCRIPTION - The electronic energy storage device such as a secondary cell comprises: a first rechargeable electrode assembly (2), which is temporarily intended to provide an electrical energy and has two electrodes (3, 3a) of different polarity; a function device (5), which is intended to be electrically connected to the two electrodes of different polarity and which is intended to be transferred to a second state, where the electrodes of different polarity are electrically connected to one another in the second state of the function device; and a cell housing (6), which is intended to surround regions of the electrode assembly and the function device, where the function device is arranged between a first wall and the electrode assembly and has a predetermined electrical resistance in the second state. The function device comprises a first potential region (7a), which is electrically connected with one of the electrodes of a first polarity of the electrode assembly, a second potential region that is electrically connected with one of the electrodes of a second polarity of the electrode assembly, and an electrical insulating region, which is arranged between the first and second potential regions, where the function device of the first and second potential regions is electrically connected with one another in the second state by an electrical conductive foreign body. The secondary cell further comprises: two conducting devices of different polarity, which serve a direction of electrons between one of the electrodes of the electrode assembly and a load or between one of the electrodes and a neighboring secondary cell; a cover that is provided to surround the electrode assembly within the cell housing; a second rechargeable electrode assembly, which is temporarily intended to intended an electrical energy available for the consumer and is connected to the first electrode assembly within the cell housing; a discharge resistance, which is switched between one of the potential regions and one of the electrodes and is thermally conductively connected to the cell housing; a display device that is intended to display the second state of the function device and/or to transmit an indication of the second state and a short-circuit from the first and second potential regions; a sensor, which is intended to record an operating parameter of the secondary cell such as the electrode assembly and is formed as a temperature probe for detecting a temperature of the electrode assembly; a cell control device, which is designed to control the secondary cell and/or the electrode assembly; and a first near field device, which is intended to communicate with a battery controller. The first potential region is electrically connected with a first conducting device within the cell housing, and the second potential region is electrically connected with a second conducting device within the cell housing. The first potential region or the second potential region: is formed as stitch protection layer; and comprises an electric conductor that is turned towards the isolation region and is electrically connected with one of the electrodes, where the isolation region comprises a recess that serves the electrical contact of the first potential region with the second potential region. Both the electrode assemblies are arranged adjacent to one another in the cell housing and are switched in series, and the two function devices are arranged between one of the electrode assembly and one of the walls of the cell housing. The secondary cell has a nominal loading capacity of 10 Ah, a nominal current of 100 A, a rated voltage of 3.5 V, an operation temperature of -40 degrees C to +100 degrees C, and/or a gravimetric energy density of 50 Wh/kg. INDEPENDENT CLAIMS are included for:    (1) a battery; and    (2) a method for operating a secondary cell.    DESCRIPTION OF DRAWING(S) - The diagram shows a schematic view of a secondary cell.    First rechargeable electrode assembly (2)    Electrodes (3, 3a)    Function device (5)    Cell housing (6)    First potential area. (7a)