-An external potential is applied to electrodes.
-Ionic zinc is reduced and deposits on the anode.
-Bromide is oxidised to bromine and complexed by quaternary ammonium salts.
-The complex is flushed out of the cell and separates due to higher density at the bottom of the catholyte tank.
-Electrodes are electrically connected and bromine complex is flushed into the cell.
-Bromine is reduced on the cathode to bromide.
-Zinc is oxidised at the anode and the deposit is gradually dissolved.
-The process is thermodynamically driven and electrical energy is released.