I just charged my laptop off the USB C port before I setup the solar.

https://www.amazon.com/dp/B07KB6XS68?ref_=cm_sw_r_apan_dp_4TQ1RMD9XCNTNPRHQ0A0

I use one of these with my laptop and mouse on my loveseat, at home I do the same thing with a monitor on a swing arm for my desktop, would be pretty simple to do the same in an rv.