I ran the fridge in the back of my Jeep Wrangler for a solid week off a 1500 Wh battery bank and it worked flawlessly taking about 100 Wh per day to keep it at 33°F in the CO mountains where it's already pretty chilly. The fold-down side was crucial as I don't have a slide built into the Jeep and it lots of stuff was stacked on top. I was able to access most everything anytime we wanted and it fit in the back of the Wrangler perfectly.
When we got it back, I set it to freezer mode and my son took it to college with frozen food.
The app was useful as I could check the temp while driving too.
It's been running for about 2 weeks solid between prep and the actual trip. That's not a long-term review, but it's a good start.