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Old 11-03-2019, 05:45 AM   #2
Ski in NC
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City: Wilmington, NC
Country: USA
Vessel Name: Louisa
Vessel Model: Custom Built 38
Join Date: Jan 2014
Posts: 5,407
Are your lights LED or incandescent? Incandescent can use a lot of power. So can a fridge/freezer. You have 520w of solar that will charge your batts at that rate on a clear day for a few hours, but with low sun or clouds the input to the system will be much less.

Maybe there is a fault in his wiring causing no charge. But maybe you are using more watt hours than the solar is capable of providing over a normal day.

You need to get familiar with the term watt hours on such a system.
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