Device for monitoring an energy storage device

The device has a central unit (30) that is galvanically separated from an electronic unit (20), whose energetic supply is implemented via an energy storage (10), where operating parameters (1, 2) e.g. temperature, of an energy supply is readable by the electronic unit. The electronic unit comprises communication interfaces (21-23), and the central unit comprises communication interfaces (31-33). The communication interfaces of the electronic unit and the central unit comprise a transmission-and/or receiving unit. The common electronic unit is attached to all energy cells (11).