# of watts solar system needed to MAINTAIN coach batteries?
Class A with 2 12 volt coach batteries. Want to maintain while not in use.
Forum Discussion
Just as easy to mount a 100 to 140 watt panel and know you have the power to both charge (slowly) and maintain. If your RV does not charge the chassis battery from the house I recommend a Trik-L-Start combiner.
Panel 120w $136
Controller $50
Panel 120w $136
Controller $50
