There are many good tools for learning about adding solar to RVs. Most reputable companies will have links on their web site. Choose high quality components and you’ll be fine. I chose to use Renogy and I’m very pleased. I installed a single 80W panel as my only interest is in maintaining my coach and chassis batteries while in storage. I chose a 20A MPPT controller and bigger wires so that I can add another panel if I ever see a need. Probably will as it’s cheap and here’s no real downside to having more than you think you need.
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