What size solar charger to maintain batteries
What size solar charger should I get to maintain coach batteries. How many watts do I need.
Forum Discussion
old guy wrote:
I do not really know the correct answer, but I will say this don't buy the 5 or 30 watt ones from harbor freight as they will NOT do the job
If you are just looking at maintaining the charge while in storage and no load, you don't need much.
We have a 15 years old 5W panel on top of the front A/C unit on the roof of our old gas motor home and it was enough to keep 2 12V + 2 6V fresh over the winter in Ottawa, Ontario, Canada.
Last year I had 2x 7W panels (might be from Harbor Freight) on the roof of our DP and it was enough to keep 2 12v and 4 6V fresh for 4 months in storage in Florida and it was in an area with a lot of shade.
