With 4 GC-2 batteries and 435W of solar panels, we can go about 36 - 48 hours before we need to fire up the generator to top off the batteries for our 19cf Samsung. If we are running more than the fridge, which is
most of the time, I'm good for 12± hours period. What they are NOT telling you is that the inverter uses power also, you have power losses from the wiring, etc. so to say that it will run 8 - 10 hours on one battery, is a stretch at best. I would not try boondocking with that size fridge with less than 4 GC-2 batteries.