How big charge controller do I need for a 200w solar panel?

Question

Accepted Answer

For example, 200/12 = 16.67 amps. Therefore, if you have a 200-watt solar panel, a 20-amp charging controller is suitable for safety. If we have 4 100-watt solar panels, the equation will be 400/12 = 33.33 amps, so we suggest using a 35-amp charging controller.

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