Abstract: Apparatus (100) and method for testing cell contact of battery cells (102) of a battery module (104), which battery cells are electrically connected in parallel via a contacting system (106, 107). The apparatus includes a sensor positioning system (108) for positioning a sensor device (110) at a plurality of test points (112) of the battery module, which is movable along a longitudinal axis (X), a transverse axis (Y), and a vertical axis (Z), and a current generation circuit (114) for generating a battery cell current (I), which is a discharging current from the battery cell or a charging current into the battery cell. The sensor device includes at least one field sensor (118), which, after the sensor device is positioned at one of the test points, detects a field in the region of the test point, which is generated by the battery cell current generated with the current generation circuit.