NOVELTY - The battery cell has housing (11) which is provided with a metallic container (13) and a metallic lid arrangement (15). Metallic container has an opening (14) through which a winding element (3) and current collectors (7,9) are introduced. A cover plate (23) closes the opening of the container gas-tightly and pressure-tightly. A feed-through assembly (25) performs gas-tight operation by contacting with electrically conductive contact assembly (19), current collector and cover plate having central region and marginal region from which opening of container is extended.    USE - Battery cell such as lithium ion battery cell for use in motor car (claimed). Can also be used in mobile electric car and hybrid vehicle.    ADVANTAGE - The feed-through assembly is contacted to electrically conductive contact assembly, current collector and cover plate having central region and marginal region from which opening of container is extended, such that the cover plate can be punched out from the metal sheet corresponding to the inner cross section of the container in the region of the opening reliably. The outer edge of the cover plate can be easily and hermetically welded tightly to the inner surface of the wall of the container. The electrically conductive contact assemblies are led out from the interior of the housing and are electrically connected with current collector conveniently. The short circuits between the terminal connections of the battery cell can be avoided. The accumulation of water on the top plate of the battery cell housing can be relieved. The drainage of moisture away from the central region toward the edge region can be facilitated. Run-off water from the central region can be flowed into the gutter and can be evaporated efficiently. The flow of water to adjacent battery cells can be avoided. The damage and corrosion can be prevented reliably.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for motor car.    DESCRIPTION OF DRAWING(S) - The drawing shows an exploded perspective view of the lithium-ion battery cell.    Winding element (3)    Current collectors (7,9)    Housing (11)    Opening (14)    Metallic lid arrangement (15)    Electrically conductive contact assembly (19)    Cover plate (23)    Feed-through assembly (25)