Simple Systems
Will Prowse on his YouTube channel does a great job of documenting variou simple systems that can be built very quickly and easily on any number of "carts," from handtrucks to rolling carts purchased very affordably from common suppliers like Harbor Freight.
In his most recent video (at the time of this writing June 2025- there has been an evolution over the years) he documents a 5000w system with a 48v 100ah server rack battery and up to 14 panels more or less depending on the actual panel specification.
5kw System
Here's a link the video: Will Prowse 5kw System
Official Parts List to Build Your Own (affiliate links):
5000W All-in-one: https://amzn.to/467vtr4
48V Server Rack Battery: https://amzn.to/460yTMk
Battery Cables: https://amzn.to/4lYg4ze
Hand Truck: https://www.harborfreight.com/materia...
Solar Panel Disconnect Switch: https://amzn.to/4mbwapy
AC Input Cord: https://amzn.to/3V46tMn
Surge Strip for AC Output: https://amzn.to/4mkDqQ1
AC Receptacle: https://amzn.to/3Vz5yUh
One Gang Electrical Box for Outlets: https://amzn.to/4lWtSu5
80A Outlet Box (wiring needs to be upgraded if you want to use it at max output): https://amzn.to/4mRbVyv
MC4 Extension cables for solar panel wires: https://amzn.to/3I6DnZS
Have a small solar array? Use a step-up solar charge controller: https://renogy.sjv.io/AoQaND
Step Down Converter for 12V Loads: https://amzn.to/4nfOHle
Solar Panels I recommend:https://www.mobile-solarpower.com/300...
Solar Panel Ground Mount Racking: https://www.mobile-solarpower.com/gro...
All of this is pretty standard components, but the one big variabe which he sort of explains in the video but not on the website particular well is the part with solar panels and how many you need, both the minimum and the maximum number of them.
These question are addressed at this link: How to figure out the Solar Panels for your System
Hand Trucks and Carts
You can fit these systems on a variety of hand trucks and heavy duty carts.
Heavy Duty Carts: https://www.tractorsupply.com/tsc/product/groundwork-1-400-lb-capacity-heavy-duty-steel-utility-cart
Pushcart Dolly: https://amzn.to/46gsVrU
Steel Garden Cart: https://amzn.to/46eKbhf
Hand Truck: https://www.harborfreight.com/material-handling/hand-trucks-carts-dollies/hand-platform-trucks/800-lb-capacity-hand-truck-58294.html