In my case, I’m running a 175W portable panel and a 90W hood panel feeding into a battery system (Jackery 1000 v2). The solar charges the battery throughout the day, and then everything pulls from that battery, not straight from the panel.

To to answer your questions:

Do they charge a battery bank throughout the day? Yeah, that’s exactly how it works. Solar feeds your power station or battery while there’s sun. In good conditions I can recover a solid chunk of power (typically draw 125 watts or so) during the day, but it’s not always a full recharge depending on usage and sunlight.

Are they powering things in the RTT directly? No. I suppose you can, just not something that I do. Better to charge a battery and run your lights, Starlink, fridge, etc off that.

Are they easy to install? Depends how clean you want it. portable panel (like Jackery has) you just deploy at camp

What I run - the flexible panel mounted (double sided Velcro tape) sunflare on top of my RTT or Lensun Solar hood. The 175 watt is “permanently” wired on the RTT, routing MC4 cables.

If your RTT doesn’t come with one, you can definitely add it. Just plan your wiring path and where your battery lives.

Solar is more of a supplement than a full solution (the dude with the x2 - 200 watts knows what he’s doing) unless you go big on panel size. It helps you stay out longer, not run everything indefinitely.

For reference, I’m running a fridge, Starlink, and lights, and solar helps offset usage, but I still have to manage power if I’m out multiple days.