The invention relates to a battery unit (1), comprising a battery cell (2) comprising a terminal (3), edges (6), and an outside insulation (5) that also encloses the edges (6). According to the invention, a non-conducting, elastic element (4) is positioned between the battery cell (2) and the insulation (5) on the terminal side so that the terminal (3) is set back from a level (7) of the elastic element (4), wherein the insulation (5) fixes the elastic element (4) in place. Thus, the battery unit (1) is stably retained in a housing while at the same time electrical contacts are mechanically protected.