Well a little research reveals that Norcold switched to Danfoss just recently...halfway through their new line of 7.0 cu ft ac/dc fridges.
Not sure any compressor only uses 1 amp running...it certainly could be the average amp hr draw which I am hoping the new Norcolds are close to.
Isotherm CR219 (looks like your pic) from Defender web page which seems similar to all the newer fridges.
- Compressor Running: 6.0 Amp @ 12 Volt DC (half at 24 Volt DC)
- Average: 2.3 - 2.5 Amp @ 12 Volt DC *
If my opening was taller I would probably go isotherm too as their water heater I installed is impressive. But to fit, I would have to drop down to their classic which is smaller....doesn't fit as well and is another $700 more....well I might still...but have to think on it some more.