The invention relates to a battery (7) comprising a case and a heat-conducting plate (8) for adjusting the temperature of the battery (7), the battery (7) having a plurality of individual cells (1) that are interconnected in parallel and/or in series and that are connected to the heat-conducting plate (8) in a heat-conducting manner. The battery (7) is formed by at least two cell stacks (11.1, 11.2) that are disposed one after the other. In order to optimize the design of the battery as regards the space it requires, the heat-conducting plate (8) is interposed between the cell stacks (11.1, 11.2), the effective heat-conducting cross-sectional area of the heat-conducting plate (8) being utilized in an optimal manner. The design allows the battery (7) to be freely extended as required.