I'm currently running 2 x 400w Vevor panels. The math said that they would be enough, but given their actual output and other unfactored losses, they are not. So I'm looking to add another 2 - 4 panels.
I've spent the past week scrolling through the top google suggestions. A1 solar, US solar, Signature solar, etc, etc. They all either have a minimum order quantity much higher than what I need, and/or a flat freight charge that costs more

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