Terryallan wrote:
Yes on Fords, the batteries are only connected when the switch is in the on position. And yes. If you have the towing package relay installed on your Ford. It in fact charges the trailer battery as you drive down the road.
I plan to get new batteries and was thinking about GEL deep cycle. However most manufacturers recommend charging them to at least 13.8 volts, but no more than 14.1 volts. I don't know how this would play out while going down the road. Have never read the alternators output at 2000 rpm on the engine. The dash display is not digital nor calibrated.
Reg
