Method for Detecting Electrical Fault States of at Least One Removable Battery Pack and/or an Electrical Device that can be Connected to the at Least One Removable Battery Pack, and System for Carrying out the Method

A method detects electrical fault states of at least one removable battery pack and/or an electrical device, in particular a charging device, a diagnostic device or an electrical consumer, that can be connected to the at least one removable battery pack, using a first monitoring unit integrated in the at least one removable battery pack and a further monitoring unit integrated in the electrical device. The first monitoring unit and the further monitoring unit each count the faulty charging or discharging processes.