Our latest fridge came with 12v compressor fridge. So far with 3yrs loving it:
- Easily 50% more interior space for the same cabinet space.
- Cools much more quickly (both on start up and when you put food in after shopping).
- Only draws about 50w when running (4amps@12v) and it doesn't run all the time.
- We have 2 - standard 12 batteries and it easily handles an overnight. If you want multiple days, solar can get you there but since we only boondock occasionally, charging from the truck while driving or running the generator for a couple hours does the trick.
- I wouldn't worry too much about getting parts. 12v compressor fridges are becoming the standard on new RVs, so if anything in 10yrs,absorption fridges will be more likely to have issues finding parts as they fade away.
A residential 120v AC fridge would be an option but then you need an inverter to run it while not connected to shore power.