Natetheskate
Well-known member
- Joined
- Jun 23, 2007
- Posts
- 157
I have a 15 year old solar system in my class C: A single KC-50 panel with an older ASC 12/8 controller. The issue is even in bright sunlight, the system can't seem to get the battery above 12.7 volts, even if the array is putting out about 20 volts. I heard that the AGM batteries are not fully charged until around 13 volts. Do I need a different kind of controller? Any recommendations?