# 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
If your battery is disconnected with no load then a very small solar panel will do great...
If it is connected to your truck systems or your trailer system than you have to have enough power to overcome the parasitic drains as well as maintaining the battery...
I have a 9WATT solar panel panel laying in the dash area of my truck and it does not do well keeping the truck start battery topped off. I have too much parastic drain for it...
I leave my trailer system batteries plugged inall the time when parked at home during the season and they PD9260C converter/charger keeps them in good shap. During the winter months I just get my batteries charged up good and then completely disconnect them but leave them sitting in the battery box on the trailer tongue.
They do just fine making it through the winter months here. I do occasionally read their charge state and they usually drop down to around 12.3-4VDC by the end of the winter months.
Roy ken
If it is connected to your truck systems or your trailer system than you have to have enough power to overcome the parasitic drains as well as maintaining the battery...
I have a 9WATT solar panel panel laying in the dash area of my truck and it does not do well keeping the truck start battery topped off. I have too much parastic drain for it...
I leave my trailer system batteries plugged inall the time when parked at home during the season and they PD9260C converter/charger keeps them in good shap. During the winter months I just get my batteries charged up good and then completely disconnect them but leave them sitting in the battery box on the trailer tongue.
They do just fine making it through the winter months here. I do occasionally read their charge state and they usually drop down to around 12.3-4VDC by the end of the winter months.
Roy ken
