PHYSICAL FINGERPRINT FOR A BATTERY SYSTEM

The invention refers to a method for generating an identifier for a system (100) of energy storage devices (B) comprising a plurality of mutually connected energy storage devices (B), wherein the identifier (120) is generated from at least one parameter correction (ΔPj ) determined for each of the energy storage devices (B) and for one or more model parameters (P) of a standard model suitable for predicting one or more state parameters (S) of the energy storage devices (B) as a function of one or more measurable physical variables (X) and of the one or more model parameters (P). The invention further refers to a related method for checking the identity of a system (100) of energy storage devices (B) and to a battery management system (10) comprising a processor configured to perform one or both methods of the invention.