Ran wrote:
Do I invest in a solar charging system capable of 'float charging?' Or do I just make sure the batteries have a full charge before storage and hope for the best??
IF you have AGM batteries AND can be sure they really are fully charged going in then what you need to do is: NOTHING.
If not:
Solar is the best but you need two systems; one for the coach and one for the engine.
Failing that, be sure they are fully charged going in and visit your unit about once a month to run the engine and the generator EACH for about 20 minutes or until thoroughly HOT, with the battery switch ON.
If you run the A/C to load the gen, that will help remove excess moisture from the living space too.
That should help get the moisture out of the engines and charge the batteries. Also move it about a foot to distribute the flat spot on the tires.