Hi, I think this is probably a really dumb question but here goes: My solar gate opener is having issues in that the batteries are discharging. I had the batteries tested and they are fine. The gate is a 24 V system. I have 2 X 12 v batteries wired in series. A "friend" played with the controller and I am not sure whether the settings are correct. The "float voltage" setting is 13.7 V. Is that correct or should it be something like 26 v considering the overall voltage coming out of the batteries is around 24 V? Any assistance on what the controller settings should be would be appreciated....