Interaction of Solar and Alternator
My camper has a single 100W roof-mount panel, which meets my power needs (2 @ 6V batteries) when the sun shines. However, when camping among trees for several days it is easy to consume 70 to 100 Ah ...
Forum Discussion
Amps flow from higher voltage to the lower voltage. If the alternator is producing more voltage at the trailer battery than the solar controller, the controller should turn itself off and all of the alternator amps would go to the trailer battery. If the solar controller is producing more voltage at the trailer battery than the alternator, then there will be no amperage transferred from the alternator to the trailer battery.
