Honestly I think you should consider a small simple 150w to 300w inverter to run the tv or charge small items.
Go ahead and run the gen 10 minutes to make a cup or run the microwave. Otherwise with a little ingenuity coffee and anything in the microwave can be made on the propane stovetop. The 10 minute big inverter run time ends up being 30 to 60 minutes to recharge the battery. Using the power direct is far more efficient.
I power my tv, dvd, laptop and charge small items with a Go Power 300w sine wave inverter.
I mounted the inverter behind the fuse-breaker panel. 12v connects to the main battery feed to the panel. 120v is wired into the entertainment area circuit with an automatic transfer switch. The wiring is very straight forward if you have done any home wiring before. The Go Power 300w has a provision for a remote power switch so with the touch of a button I have instant power.
GP 300w SW $172Xantrex 15 amp switch $49So all in maybe $250-$300 for self install.