20W solar...need controller?
I have acquired a 20W solar panel that shows 20vdc when not connected to anything (in full sun). When hooked up to a 12v battery, I have seen it as high as 17vdc. I'm wondering if I can get away wit...
Forum Discussion
A fully charged healthy battery with no overnight loads applied will be overvolted by 20 watts of solar.
Much depends on the battery, how much current does it require to be maintained at a safe float voltage? its different for all batteries and changes as they age
here is a video of a 12watt solar panel overvolting a pair of GC-2 lifelines
https://www.youtube.com/watch?v=z5RtZe9AW2E&list=UUoPqTkOluQsuu3RpGnxVwFw&index=9
https://www.youtube.com/watch?v=IMxlPIdv2D8&list=UUoPqTkOluQsuu3RpGnxVwFw&index=15
And the guy in that video has more experience and knowledge on DC systems that anybody else who posts on the internet
Much depends on the battery, how much current does it require to be maintained at a safe float voltage? its different for all batteries and changes as they age
here is a video of a 12watt solar panel overvolting a pair of GC-2 lifelines
https://www.youtube.com/watch?v=z5RtZe9AW2E&list=UUoPqTkOluQsuu3RpGnxVwFw&index=9
https://www.youtube.com/watch?v=IMxlPIdv2D8&list=UUoPqTkOluQsuu3RpGnxVwFw&index=15
And the guy in that video has more experience and knowledge on DC systems that anybody else who posts on the internet
