I got my ARB from Sierra & the only 2 reviews are mine - check the name on reviews.
As I was their first customer they in the dark about the product back then - but got me to the factory rep.
After I got mine they jacked up the price.
ARB website does not describe compressors ?
Il keep checking - not saying ur right or wrong
I can tell you & bet shirt off my back at 90 deg F -
Unit will not cool to ZERO F- you might get to 20 F deg if lucky ?
And compressor will run 80% or more
.87 amp per hour is a joke - at 90 F I use about 500- 600 watts In 24 hours [url][/url]
they come up with the .87 AH based on unit being set to 45 F cooling in 75 or 80 F
http://store.arbusa.com/Fridges-C11.aspx
ARB Manuel does not talk about compressor size


http://store.arbusa.com/Assets/file/ARB_Fridge_Freezer_MAN_EN.pdf
Finally here I found it - compressor size now



I was sure the 63q had the 50 compressor 2-3 years ago
http://www.arbusa.com/uploads/PDF/newProductAdvice/New_FridgeModels_PR_media.pdf