BATTERY SYSTEM

A battery system, in particular for a vehicle, comprises a battery system housing (12), wherein the battery system housing (12) has an air inlet region (18) and an air outlet region (22) for air flowing through the battery system housing (14), as well as at least one battery unit (14), wherein the at least one battery unit (14) is accommodated in the battery system housing (12) such that it can be flowed around by air flowing through the battery system housing (12).