|08-12-09, 05:45 PM||#1|
Join Date: Sep 2008
Location: Toulouse, France
Thanked 2 Times in 2 Posts
When is a charge controller needed ?
I haven't found cheap/free 2nd hand solar panels yet, but thanks to Gascort I'm thinking about building my own... then I'm imagining where to put put these cells and so how to design the shape of the panels...
One question I have : when is a charge controller needed ?
My current cases are :
I think that in both cases, the panels are too weak to damage the 50Ah 12V batteries. From which wattage does a charge controller is needed ?
Earth absorbs 1.8 t CO2/head/yr, while a French generates 6.2 t CO2/yr
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|08-12-09, 11:00 PM||#2|
Join Date: Aug 2008
Location: Germantown, WI
Thanked 367 Times in 298 Posts
I think anything over 2A is probably good to have a charge controller for. But, that is a total guess. I say 2A just because thats what most trickle chargers put out. I'm not sure they lower their amperage after they hit full charge.