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All_I_could_aff's avatar
All_I_could_aff
Explorer
Feb 28, 2016

Solar controller selection for existing pannels

I recently acquired several pieces of road construction type equipment. Each unit was equipted with either five 90 watt solar pannels, or six 75 watt panels (450 watts either way). The charge controll...
Almot's avatar
Almot
Explorer III
Feb 29, 2016
Mr Wiz - right now I have a fainter yet idea of what the OP wanted to know :)... Though it looked a little clearer at the beginning.

OP - if you only have room for one or two panels, then 20A controller is plenty. If your existing 30A works, - keep it. Or get some better 20A PWM model.
Yes, 2*90W panels with small PWM controller and 12V battery should be wired in parallel.

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