It's going on 3 years we have been camping with our NovaKool 7.5cuft, AC/DC, fridge/freezer. It draws 4.7A when cycling although manufacturer says 4.4A after reaching set temperature.
As has already been said, daily draw from batteries depends on:
1) Set temp
2) Door opening times and duration
3) Amount of warm food or beverage placed in unit
4) Surrounding or outside temperature
5) Any extra insulation mods
Pros:
Can set up on very unlevel ground without damage to unit.
Cools and freezes quickly in warm temps
Uses less energy (more efficient)than a similar sized absorbtion unit
Almost zero fire hazard
Similar compressor technology used in 99.9% of worlds commercial and domestic refrigeration units
Cons:
Units use more electricity than similar sizes absorbtion fridges so if dry camping exclusively, RV must be set up with larger battery bank, solar, wind etc, genny and/or power from the alternator.
We have camped 193 nights with the NovaKool and have had shore power 4 times and genny power +- 3 hours.
330 W solar, 4 6V AGM's(400AH) and the trucks alternator have done the rest.
Couldn't be happier.
Dave