Originally Posted by Bilcin
I was told by a few people that with the inverter going essentially the tv won't be able to charge the battery, not enough power can be supplied by the tv. I have never tried to do that.
I have an F250, a 1000W inverter and a residential fridge. Not sure what size but probably about 18cuft. Not a side by side. I have a single 12v, 24 series battery and have run my fridge for over 12 hours while connected to TV only. During those 12 hours the TV was parked and off for over 2 hours.
I also know my fridge does not run constantly and seems to be off much longer than it is on. You said your fridge draws about 1 amp. That at is 120 watts on the 120v that the inverter needs to supply. You have a 1000 watt inverter but you only need 120 watts when fridge is running. Your battery needs to supply 120 watts to the inverter plus the watts needed to account for your inverters effenciency. Most inverters are at least 80% efficient so you need about 15 amps from you battery to supply the 120 watts to your fridge. Now you only need the 15 amps when the fridge is running (compressor on).
Again, I have yet to run mine down and I have seen posts on this site where folks have run dry camping for more than 24 hours.
make sure the 12v to your TT is active. On my F150 there was a relay and a fuse in the glovebox that needed to be installed. Easy way to tell is measure the voltage at your battery terminal with the TV on and off. When the TV is on the voltage at the battery terminals will increase.