not sure what galvanic cell is,,, looked it up,, still not sure what that has to do with electr. Electrolysis is decomposition from an electric current passing through a host metal, dissimilar metals will corrode without the addition of any water source,,,the tech I was referring to is on Griffins site check it out,,if there is no electric there would not be any electrolysis,,put a piece of alum or steel in a glass jar of coolant, it will be there forever,,if they don't touch or the water doesn't evaporate and the steel rusts,,