A Sensor Arrangement and a Method for Monitoring a Storage System

A sensor arrangement for a vehicle storage system for electric energy is disclosed. The vehicle storage system includes a plurality of storage units for electric energy that are connected in series between a reference voltage node and a first or a second output terminal to provide electric energy to at least one consumer at the first or at the second output terminal. The sensor arrangement has a plurality of sensor units configured to determine charging levels of the storage units by measuring at least one of the following quantities: one or more voltages between reference voltage node and a node between adjacent storage units, one or more voltage drops over at least a subset of the storage units, electric currents though the first and/or through second output terminal, or temperatures of the storage units.