I'm just a weekend RV'r with 2-12V lead acid in Northwest. Either looking at 1-170W panel or 2-100W. Don't like putting holes all over roof. Might just use long cord from panel so I can move it around to get max sun rays, so 1 larger panel would be better for ground use. If I get 2-100W would it be better to go 24V? I think I would use a 20amp MPPT for either just to get most out of the sun or for my small system, just use a PWM.
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