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I have a bluetti 200P that I use in my rv. I would like to mount just one large, over 400watt, solar panel on the roof to charge it back from about 50% each day. I was thinking of a solaria with these specs: I know I need at least 36V for charging the Bluetti. Also what size cabling would...

I want to be able to use a 3 way switch to charge my Bluetti and once its topped off switch to a charge controller and charge the 300AH battery. Right now I use a breaker to turn off the 820 Watts of solar at 100V 10 amps. 2 410 watt panels