Battery can for a battery

Battery, comprising a battery can comprising a cylindrical can body, an electrode assembly accommodated in the cylindrical can body and formed by winding an anode and a cathode that are isolated by a separator,

• wherein the can body has a first end forming a base, and a peripheral side wall extending from the base in a longitudinal direction to a second end of the can body comprising an opening, wherein the second end is closed by a cap assembly inserted into the can body opening to the can body, wherein the cap assembly has been attached to the can body by crimping an annular shoulder surrounding the opening inwardly such that the annular shoulder is in engagement with an upper section of the cap assembly, wherein:
• the side wall of the can body ends in an end edge at the second end and the end edge of the peripheral side wall is folded in an inwardly extending loop into the annular shoulder;
• and inner opposing side wall surfaces of the inner annular shoulder abut each other and the end edge contacts the inner side wall of the can body,
• the annular shoulder has been crimped inwardly such that the end edge of the side wall is bent away from the longitudinal axis of the can body and faces the inner side wall of the can body and an end face of the side wall at the second end forms an outer flat annular surface when viewed in the longitudinal direction of the can body;
• and
• a section of the side wall has been crimped inwardly and forms an annular projection that engages a lower section of the cap assembly.