A battery system includes a plurality of battery cells and a battery management unit. The battery management unit comprises a plurality of acquisition devices and a plurality of monitoring devices. Each of the acquisition devices is configured to acquire at least one operating parameter of the battery cells associated therewith. Each of the monitoring devices is associated with a plurality of battery cells, and each of the monitoring devices is configured to monitor the operating parameter of the battery cells associated therewith. The battery cells, which are each associated with one of the monitoring devices, are associated with at least two acquisition devices.