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Tag Archive: wattage
May
25
What’s the minimum wattage for a solar panel to need a charge controller?
Question by Brandon: What’s the minimum wattage for a solar panel to need a charge controller? I have a 10 watt 12v, 0.5 amp solar panel (apparently 10 because it could reach 21 V). I want a charge controller, but I read that a 5 watt panel had too low of an amperage to actually …