A method for producing a prismatic battery cell includes providing an electrode stack with first and second electrodes stacked over one another. Arresters of the first electrodes protrude beyond an end face of the electrode stack in longitudinal direction. Arresters of the first electrodes are compacted and welded together, in particular by ultrasonic welding. The compacted arresters are disposed on a flat lateral surface of a contact element of a cell cover of a cell housing. The contact element forms a cell terminal. The compacted arresters are welded to the contact element, in particular by laser welding. The cell cover is disposed or pushed on the electrode stack such that the cell cover, or the lateral surface, is parallel to the end face. A prismatic battery cell and a motor vehicle including such a battery cell, are also provided.