Battery device for providing different electrical voltage levels to be used by different electrical consumer devices, particularly for use in a motor vehicle, particularly a utility vehicle or a commercial vehicle, comprising - at least two battery storage units (20, 40), wherein each battery storage unit (20, 40) comprises a low voltage terminal (BAT LOW) and a high voltage terminal (BAT HIGH), - wherein each battery storage unit (20, 40) of the at least two battery storage units (20, 40) comprises at least one intermediate voltage terminal (BAT MID) which is connected between the low voltage terminal (BAT LOW) and the high voltage terminal (BAT HIGH) of the respective battery storage unit (20, 40), - wherein each battery storage unit (20, 40) comprises a plurality of battery cells (C1, C2,...Cn) connected in series with each other between the low voltage terminal (BAT LOW) and the high voltage terminal (BAT HIGH), wherein each battery cell (C1, C2,...Cn) provides a predetermined voltage, - wherein the at least one intermediate voltage terminal (BAT MID) is connected between two adjacent battery cells of the plurality of battery cells (C1, C2,...Cn), - wherein the at least two battery storage units (20, 40) are connected in series with each other, - wherein the low voltage terminal (BAT LOW) of a first battery storage unit of the at least two battery storage units (20, 40) is the ground terminal (BAT GND), - wherein the high voltage terminal (BAT HIGH1) of said first battery storage unit is connected to the low voltage terminal (BAT LOW2) of a second battery storage unit of the at least two battery storage units (20, 40), - wherein at least one intermediate voltage terminal (BAT MID1, BAT MID2) is respectively connected between two adjacent battery cells (C1, C2,...Cn) of said first battery storage unit and/or said second battery storage unit, wherein each intermediate voltage terminal (BAT MID1, BAT MID2) provides an intermediate voltage output which corresponds to the sum of the predetermined voltages of the battery cells (C1, C2,...Cn) which are connected between the ground terminal (BAT GND) and said intermediate voltage terminal (BAT MID1, BAT MID2), - wherein the individual battery cells (C1, C2,...Cn) are attached to a connector rail which can slidingly be engaged by a connector end of the intermediate voltage terminal (BAT MID1, BAT MID2), and - wherein the intermediate voltage terminals (BAT MID1, BAT MID2) are configured to be movable to be variably connected between any two adjacent battery cells (C1, C2,...Cn) of the plurality of battery cells (C1, C2,...Cn). - at least two battery storage units (20, 40), wherein each battery storage unit (20, 40) comprises a low voltage terminal (BAT LOW) and a high voltage terminal (BAT HIGH), - wherein each battery storage unit (20, 40) of the at least two battery storage units (20, 40) comprises at least one intermediate voltage terminal (BAT MID) which is connected between the low voltage terminal (BAT LOW) and the high voltage terminal (BAT HIGH) of the respective battery storage unit (20, 40), - wherein each battery storage unit (20, 40) comprises a plurality of battery cells (C1, C2,...Cn) connected in series with each other between the low voltage terminal (BAT LOW) and the high voltage terminal (BAT HIGH), wherein each battery cell (C1, C2,...Cn) provides a predetermined voltage, - wherein the at least one intermediate voltage terminal (BAT MID) is connected between two adjacent battery cells of the plurality of battery cells (C1, C2,...Cn), - wherein the at least two battery storage units (20, 40) are connected in series with each other, - wherein the low voltage terminal (BAT LOW) of a first battery storage unit of the at least two battery storage units (20, 40) is the ground terminal (BAT GND), - wherein the high voltage terminal (BAT HIGH1) of said first battery storage unit is connected to the low voltage terminal (BAT LOW2) of a second battery storage unit of the at least two battery storage units (20, 40), - wherein at least one intermediate voltage terminal (BAT MID1, BAT MID2) is respectively connected between two adjacent battery cells (C1, C2,...Cn) of said first battery storage unit and/or said second battery storage unit, wherein each intermediate voltage terminal (BAT MID1, BAT MID2) provides an intermediate voltage output which corresponds to the sum of the predetermined voltages of the battery cells (C1, C2,...Cn) which are connected between the ground terminal (BAT GND) and said intermediate voltage terminal (BAT MID1, BAT MID2), - wherein the individual battery cells (C1, C2,...Cn) are attached to a connector rail which can slidingly be engaged by a connector end of the intermediate voltage terminal (BAT MID1, BAT MID2), and - wherein the intermediate voltage terminals (BAT MID1, BAT MID2) are configured to be movable to be variably connected between any two adjacent battery cells (C1, C2,...Cn) of the plurality of battery cells (C1, C2,...Cn).