[jcurtis934]

Residential fridge, assuming it uses the inverter compressor technology will pull 3 amps when running from 120 vac. Since inverters are only 80% efficient, that means you are drawing 35-40 amps from the battery bank. You never never pull a battery bank down near 50% or battery life shortens. IF the fridge ran at a 50% duty cycle, in 24 hours it would use 75 amp hrs of 120 vac, but more like 90 amp hrs out of the battery bank....three days three times as much. If you had 2 group 24 (150 amp hrs) batteries and ran nothing else but the fridge, you could get less than 20 hours of use before it would be time to shut down. This should tell you that lots of battery power being recharged by solar and help from a generator or two is needed if you want to go off grid.