A flow battery bubble detection system includes a flow battery having a cathode and an anode circulation flow path, an electrochemical cell and an exchange membrane. A portion of the cathode or the anode circulation flow path is formed as a light-transmiss...

Method for operating a fuel cell battery (1) involves analysis of the integrity state of the battery. The integrity state is determined by measuring the battery operating parameters. To operate the battery safely integrity dependent parameters are taken in...