Hmmm... all the common solar stuff is cheaper than I remember. But only 12V.
If you carried up a 48v tool from the house you’d get 16 times as much work out of it (if my elect math is right) than from a 12v!
Maybe the ‘convenience’ would be worth it to you though. Looks like it’d be only about a hundred$.
https://sunelec.com/index.php?_route_=sunpower-435w-modules-grade-b.html
These are 72v panels.