The biggest power users I have are a Dometic CF50 fridge, a very basic 3 speed reversible Fantastic fan and an 85W Ryobi battery charger. My batteries have never gone below 12.4 volts and usually read 12.6 volts in the morning. With only a couple exceptions they fully recharge everyday.
NOTE: 12-14 hour run time on 0.8 gallon tank on the generator.