Newbie still trying to figure it all out!
I have a simple question that I don't see answered anywhere online. I have a 250 watt panel It puts out about 40 DC volts not hooked to anything in bright sunlight. When I hook it up to my battery bank (805 ah-12 v deep cycle batteries) via a charge controller (30 amp) the output shows only about 13.25. Is this normal? What happens here to reduce the output of the panel when I hook it up to the batteries? I have a 120 watt panel hooked in there, too. it shows around 20 DC volts and hooked to the batteries shows 12.40. ?? I would really like to find an answer. Am I doing something wrong? Or is this normal? Thanks!
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