"Why do you need something so elaborate to keep the coach batteries charged? This wouldn’t be sufficient?"
Sunway Solar Car Battery Trickle Charger & Maintainer 12V Solar Panel Power Kit Po... https://www.amazon.com/dp/B01MYVUSRH..._DiQtDbRKK1VBB"---
I usually cover the windshield when parked for storage.
Best spot to capture solar on a motorhome is on the roof.
Also provides extra production for occasional boondocking.
Not sure if that is powerful enough for 3 batteries?
__________________
|