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problem with solar panels

 
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Location: New Mexico
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I picked up some older panels, { kyrocea kc-80 } when I test them in full sun, putting out 20 volts, when I hook them to charge controller they drop to 9-11 volts and drain the battery. Any help out there?

Tom
 
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Hi Tom;
Go directly to a battery and see what you get.
 
pollinator
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[quote=Tom Berens]I picked up some older panels, { kyrocea kc-80 } when I test them in full sun, putting out 20 volts, when I hook them to charge controller they drop to 9-11 volts and drain the battery. Any help out there?

Tom[/quote]hmmm.
The first step is double checking polarity, then checking the charge controller. After that you would want to check the diodes on the panels. If the diodes blew you could drain the battery through the panel.
 
Tom Berens
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Anyone know where I can get some diodes?... Lol
 
David Baillie
pollinator
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[quote=Tom Berens]Anyone know where I can get some diodes?... Lol[/quote]these days digikey Ebay robotshop or amazon. Dirt cheap.
 
pollinator
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Some used electronics will have fat diodes.
If the diode is bad the panel will only drain your battery when it's dark out.
 
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