Battery cell testing device

The utility model relates to the technical field of battery systems, in particular to a battery cell testing device, which comprises two clamping plates, one surface of each clamping plate is thinned to form a boss area, a battery cell is clamped between bosses of the two clamping plates, the battery cell is in contact with the bosses, and the battery cell is connected with the bosses. The two clamping plates are provided with bosses, the surfaces of the clamping plates provided with the bosses are subjected to insulation treatment, short circuit of the battery cell is prevented, the two clamping plates are further provided with pre-tightening parts which are correspondingly connected with each other so that the two clamping plates can be connected in a fastened mode, and pre-tightening force is applied to the battery cell in the battery cell testing process. According to the battery cell testing device provided by the utility model, the local area of the clamping plate is properly thinned to form a boss area