Patent ID: 7659693

Claim:
Rechargeable battery, comprising: a battery housing having a rear wall with a recess which extends as far as an end wall of the battery housing, the recess having a base side and narrow sides facing each other, the base side continuing via a step into an outer side of the rear wall, a cover extending from the step being positioned at the step, and a contact assembly which is covered by the cover, the contact assembly comprising four contact elements, a single contact element being positioned in a first contact space, and three contact elements arranged next to one another in a row being positioned in a second contact space, wherein: the cover forms a contact housing which completely surrounds the contact assembly in a circumferential direction, the cover has an insertion opening on a side facing away from the step, the contact housing is of parallelepipedal configuration and has a bottom wall resting with surface-to-surface contact on the base side of the recess, a cover wall arranged parallel to the bottom wall and in a plane of the outer side of the rear wall of the battery housing, side walls which are aligned vertically to the rear wall, each of which faces a narrow side of the recess, and a partition wall, which is aligned vertically to the bottom wall and extends from the step to the insertion opening and divides the interior of the contact housing into the first and the second contact space, the insertion opening is surrounded by a circumferential rim of the contact housing, and the circumferential rim forms a sealing surface, and the contact element arranged in the first contact space forms a first voltage connection of the battery, and the contact element arranged in the middle of the row of three contact elements of the second contact space forms a second voltage connection of the battery.