We recently purchased an ACOPOWER compressor cooler, which uses an LG compressor. The model I selected has a built-in lithium battery
that will keep it at 37 degrees + or - for around 14 hours. We used it this weekend found that the battery
and 45w solar panel
on our Campster
kept it going well while we were driving. Our campsite was in the trees and the sun was mostly blocked by smoke haze, so I topped it off with the generator
when we had it fired up for other reasons.
came with a small dorm fridge, which was not useful while traveling or when boondocking
. I took it out and reused that space. The only downside of the new cooler is that it is not built in and we have very limited floor space. We have to leave some space for the dog, so we put it outside in a pop up tent/changing room. A minor inconvenience.