[tuga]

It depends on the age of your batteries and their amp hour rating. My 6 house batteries are AGM 8Ds which have 255 amp hours each and they are 6 years old.

From a full charge I can run the refrigerator/freezer, a few lights, and make some coffee for about 18 hours. With only the refrigerator/freezer I can go about 24 hours. When the batteries were new the voltage would last longer; about 24 hours.

When your Link 2000 shows your house battery voltage going down to 12.25v I would start my generator to charge the batteries back up. 12.00v is a DEAD battery, so you don't want to go too low. Be sure to turn your battery merge button OFF while you are dry camping. When you start the generator, be sure to turn the battery merge button back ON to charge the house batteries.