Renege only offers a 100w suitcase system but they have a another 100w portable without the controller you can join up to the main panels while Zamp offers up to 200watt two panel system. I purchased my Zamp system a year ago. I've used it on several trips to national parks where there are no hook ups and on a good sunny day the batteries get fully charged. You can always build your own system purchasing the blank panels and a solar controller, make some legs, rivet on hinges and latches. For DIY you would want to mount the solar controller inside the trailer close to the batteries and run a pigtail connector outside for quick connect.
2008 Classic 25fb "Silver Mistress"
2015 Ram 2500 6.7L Cummins. Crew Cab, 4x4, Silver
2010 Tundra 5.7L, Double Cab, 2wd, White