Yes, maybe I should have said ice box and ice blocks? I agree the peltier type cool boxes are not much cop.
Our previous camper fridge was a Vitrifrigo compressor, front opening, worked fine in a Moroccan summer.
My neighbour being diabetic has concerns about keeping insulin cool in a powercut, which is the sort of thought I was having about how much refrigeration is needed by the OP for how long. Running a half full domestic fridge just during a temporary power cut from a small lead acid bank seems overkill to me. We just lost the whole of two freezers during a power cut while we were away and despite a lot of beef in the bottom scooped up when it was on offer pre Christmas the total value of everything was just about on the £350 insurance claim excess. That has never happened to me before, so spending hundreds to mitigate that is not worth it to me. Having a set up to power fridge and freezers during weeks of no mains power either needs the sort of set up I linked to of HandyBobSolars house in the southern US in a previous thread, thousands of pounds of lead, or a genny plus a lot of jerry cans.
But if the power went and I have a decent cool/ice box, plus already frozen ice blocks, I could cherry pick what I wanted to keep cold or frozen, wrap that in blankets too even! Possibly for days.
There are a few YT vids comparing the Yeti to a Coleman showing how it's just more insulation that makes the Yeti work better. The Coleman tested below had none in the lid at all. So wrap the Coleman in silvered bubble wrap plus drill holes in the lid and fill with expanding foam and you have a Yeti in all but name