I don't have one, but research says
The duty cycle won't be 1 hour
The power draw is approximately 3.?? Amps while running
Duty cycle is less than my residential fridge
Figure 20% duty cycle , about 12 minutes power per hour if undisturbed
So that equals 4 amp hours of use per Five hours of real time
That's 50 watt hours of power per Five hours
Batteries last a long time if you are not opening it up
Over night drain would be of no concern to most people, even me
However we are constantly in the fridge during the day
My next fridge will be something like that only much bigger