NOVELTY - The battery cell connector comprises a first connecting part (2) for connecting to a battery pole of a first battery, a second connecting part (4), and a connection part (6) arranged between the connecting parts and bringing the connecting parts into electrical contact with each other. The first connecting part is formed on side A facing a battery pole, from a first electroconductive material, and a flat piece (8) for connecting to a second battery pole is formed on side A facing the battery pole, from second electroconductive material different from the first material, is arranged.    USE - Battery cell connector useful for automotive industry.    ADVANTAGE - The battery cell connector is compact and can be manufactured with improved storage effect.    DETAILED DESCRIPTION - The battery cell connector comprises a first connecting part (2) for connecting to a battery pole of a first battery, a second connecting part (4), and a connection part (6) arranged between the connecting parts and bringing the connecting parts into electrical contact with each other. The first connecting part is formed on side A facing a battery pole, from a first electroconductive material, and a flat piece (8) for connecting to a second battery pole is formed on side A facing the battery pole, from a second electroconductive material different from the first electroconductive material, is arranged, in a form-fitting manner, on the second connecting part. The surface of the flat piece turned to the battery, and the first connecting part are coplanar. The first and/or the second connection parts is formed as flat part. The connection part is formed in single-piece manner with the first and/or the second connecting part. The connecting part is coated with aluminum, tin, zinc, copper, silver and/or its alloy. The flat piece is coated with steel, tin, zinc, copper, silver or its alloy. The flat piece is welded with the second connecting part, which is flexibly formed. The connecting part has wave-shaped ribs distanced from each other. The ribs are coplanar to the side of the first connection part and/or the second connecting part, turned to the battery and are formed from the plain of the connecting part. The ribs are formed by pressings, cuttings, laser cutting and water beam cutting, from the connecting part, which is formed from two films. The connecting part is formed from strands of aluminum and copper and network of aluminum and copper. The connecting part is partially compacted in the area of another connecting part. The connecting part, the first connection part and/or the second connecting part form an offset (10) between a plain of the first connecting part and a plain of the second connecting part. The offset is formed in such a way that the surface of the first connecting part turned to the battery is coplanar to the surface of the flat piece turned to the battery. The first connecting part comprises a connecting area formed from a third electrical conductive material on the side turned away from the battery. The connecting area is formed with the surface of the first connecting part turned away from the battery. The connecting area is coated with a third metal and is formed from copper, nickel, tin, zinc, silver. gold and/or its alloy. An aeration opening for the battery is arranged in the connecting part, is round and has projections, where the diameter of the aeration opening is smaller than a battery pole. The battery is partially connected along the external circumference of the aeration opening with the first connecting part. The flat piece has an opening coaxial to an aeration opening in the second connecting part. The battery is partially connected along the external circumference of the opening with the flat piece. The aeration opening of the second connecting part is larger than the aeration opening of the first connecting part and the size of the opening of the flat piece corresponds to the size of the aeration opening of the first connecting piece. The connection part is formed from soft annealed aluminum. The connecting part comprises a crest and a trough in Z-shaped longitudinal section. The connection part is rejuvenated in the longitudinal section in a part passing vertical to the propagation direction and comprises two bending radii of greater than 90 degrees . INDEPENDENT CLAIMS are included for:    (1) a method for the production of a battery cell connector; and    (2) a system of battery.    DESCRIPTION OF DRAWING(S) - The diagram shows a sectional view of a first and second battery cell connector.    First connecting part (2)    Second connecting part (4)    Connection part (6)    Flat piece (8)    Offset. (10)