Work very good am very impressed. It works as advertised. I use it in my semi truck does shut off before killing batteries.

Only had for a few weeks but have used on a sailboat trip and at our off grid camp. The only issue it had at the camp was that it would not run on one of the 12 volt car sockets, I believe because the wire feeding the socket was too long and thin so I kept seeing an Error condition, likely due to a voltage drop regardless of what setting I made for the checks it does fgor low voltage. I moved the cooler to a socket with a shorter run and it ran like a champ. Temperature is pretty close to accurate as a fridge - my analog thermometer was with a degree or 2 celcius. It's quite and has decent insulation. Time will tell if it is long lasting, but I am very impressed so far with build quality and functionality.