BATTERY TEST SYSTEM, BATTERY TEST BENCH AND SERVER AND METHOD FOR ASSESSING A BATTERY STATE

A battery test bench, server, and battery test system, and a method for assessing a battery state of electrochemical batteries, the battery test bench (20) having a measurement device (30) for performing a battery capacity measurement and an electrical impedance spectrum measurement on an electrochemical battery (10), a machine learning algorithm of the server being configured for processing a measured electrical impedance spectrum. A battery capacity and an electrical impedance spectrum are measured on a number of batteries (10) of a same kind. The obtained first measurement data (61) are transmitted to the server (80) via a communication network (90), and the machine learning algorithm is trained based on the first measurement data (61). Then, an electrical impedance spectrum is measured on at least one further battery (10) of the same kind. The obtained second measurement data (62) are transmitted to the server (80) and evaluated by the trained machine learning algorithm, including processing the measured electrical impedance spectrum by the machine learning algorithm, and generating an output that represents battery state information (68) relating to a battery capacity.