Patent ID: 8168323

Claim:
A plastic battery cover for closing a battery housing comprising: a top surface; a bottom surface; at least one terminal extending through the battery cover; and an uppermost connecting flank extending from the at least one terminal, the uppermost connecting flank in contact with the battery cover; wherein the uppermost flank is the flank closest to the top surface of the battery cover; wherein the uppermost connecting flank is configured such that plastic rests on, an upper side of the connecting flank and avoids a gap between the terminal and the top surface of the battery cover; wherein the uppermost connecting flank comprises an outer circumferential surface having a substantially flat surface; and wherein the uppermost connecting flank comprises an at least partially circumferential groove on the uppermost connecting flank's outer circumferential surface; and wherein the uppermost connecting flank is configured such that a region between the at least one terminal and the battery cover adjacent to the top surface of the battery cover is adapted to prevent formation of a gap between the terminal and an adjacent portion of the battery cover adjacent to the top surface of the battery cover after volume reduction of plastic in the region between the at least one terminal and the top surface of the battery cover during manufacture of the battery cover by injection molding.