I should also add that I have mine on 48volt, so my 2 lots of 3x80w panels are wired to give out 9 amps at 51 volt, rising to 66v max, where they taper off to zero current. My charge controller is set to divert at 55 volts to the grid tie. Are you panels configured for 28 volt at maximum current? This would be perfect for charging a 24 volt battery system.
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