A battery system, including a battery housing, which includes a base body, a first cover element, and a second cover element. The first cover element closes a first open end face of the base body, and the second cover element closes a second open end face of the base body. The battery system also includes a battery cell holder, which includes a plurality of battery cells, the battery cell holder being situated inside the battery housing, and a battery management system which is configured to monitor the plurality of battery cells and to detect temperatures of the individual battery cells. At least one blower is situated inside the battery housing, and the at least one blower being activated by the battery management system as a function of the temperature of the individual battery cells exceeding a threshold value.