Battery system comprising a plurality of cells (1.1, 1.2) which are arranged in at least one stack, wherein a first pole (1.1.P1) of a first cell (1.1) is electrically conductively connected to a second pole (1.2.P2) of a second cell (1.2) by means of a cell connector (3), an electronics unit (5) which is configured to detect the voltage of the cells (1.1, 1.2), wherein a first contact element (4.1) is arranged on the cell connector (3) and a second contact element (4.2) is arranged on the electronics unit (5), and a conductor (6), wherein a first section (6.1) of the conductor (6) is electrically conductively connected to the first contact element (4.1) and a second section (6.2) of the conductor (6) is electrically conductively connected to the second contact element (4.2), wherein the contacting of the conductor (6) with the first and the second contact element (4.1, 4.2) is effected by means of first contact members (7) which are formed on the first and second contact element (4.1, 4.2) and which are configured to penetrate the insulation of the conductor (6) at least in sections and to deform the conductor (6) at least in sections, wherein the first contact element (4.1) has a first opening (4.10) and the second contact element (4.2) has a second opening (4.20) into which the conductor (6) can be inserted for contacting with the first contact members (7), wherein the first opening (4.10) is oriented such that the first section (6.1) of the conductor (6) can be inserted parallel to the base surface (3G) of the cell connector (3) and such that the second opening (4.20) is oriented such that the second section (6.2) of the conductor (6) can be inserted parallel to the base surface (5G) of the electronics unit (5), as well as method for producing an electrically conductive connection.
