Battery and electrical device

Abstract

Battery, characterized in that it comprises: a battery cell; a first housing comprising a first end wall; a second housing which together with the first housing forms an enclosed space for receiving the battery cells, wherein the second housing comprises a second end wall and two third side walls, wherein the second end wall and the first end wall are arranged opposite each other in a first direction and the two third side walls are arranged opposite each other in a third direction and are connected to the second end wall;wherein the third side wall has a third surface facing the enclosed space, a fourth surface facing away from the enclosed space and a second side surface connecting the third surface and the fourth surface, wherein the second side surface comprises a flat surface and a transition surface for sealing the connection with the first housing, and wherein the flat surface and the transition surface are connected to each other and blend smoothly into one another.