I bought one about 10 years ago and it is still going strong.
It has the mobitronic which you need to plug it into 240V, it cools great even straight on 12V from room temperature (just to see how it would perform and how long it would take to cool).
Im not sure on current draw but we get about 3 days on our battery in the camper (105AH) in normal 25 deg temp days constantly in and out of the fridge but couldnt stay any longer to see if it would go further. Bloody work!
The only trouble I have had (touch wood) is somehow the emergency switch got turned on and it run flat out constantly freezing everything, for the life of me I couldnt work out why this was happening until I asked on another forum......dummy!