Abstract: A method for operating a battery system with a plurality of cells, a battery system, a vehicle including such a battery system and a computer program element for operating such a battery system. The method for operating a battery system includes monitoring a state of health of each of the plurality of cells, detecting at least one malfunctioning cell, analysing the state of health of the malfunctioning cell, limiting a discharge power over a time period if the malfunctioning cell has a worst state of health in the battery system or limiting a charge power over a time period if the malfunctioning cell has a best state of health in the battery system, and reducing a minimum state of charge of the battery system over the time period.