If you want to boondock with a 12 volt fridge, you will need a significant
solar charging system to support it. That means both the fridge cost and say 150 watts or more of
solar and most likely bigger battery(s). If you just need solar for
lights,music and a bit of water pumping you can get by with maybe 50 watts of solar and your existing
battery. I think it's worth considering a propane/120 volt fridge that mounts in your trailer. You may already have
propane but if not, adding it is not a big expense. You may be able to find a good used
propane fridge in your area. If you build one into your existing trailer, be sure to take the opportunity to super insulate it as you build.