bosch water heaters
According to the upper tech support the control panel will actually convert the power from the hydrogenerator to the correct voltage ac or dc without having to make any Manuel changes. Also per my direct question a 1.5 vdc battery (I am using a AA) is sufficient for powering the unit. I have been powering my unit for just over a month with a battery hooked into where the hydrogenertor would have plugged into by placing a couple of wires into the connecter and not having to cut anything to replace at a later time. I hope this helps everyone else also.