I have two AB cold machines.
A 2.5 cubic foot freezer with pretty good insulation. It runs about a 50 percent duty cycle. I have it set to a very cold setting to keep everything frozen. I also put a cold blanket over the top of the food - this helps keep everything cold.
The 5 cubic foot refrigerator runs about a 30 percent duty cycle.
These are in the tropics timings and the compressors are set to run slower than full speed - about four amps draw each.