Wow! Guess I'm a real Dumb A--,
I was just going by what I did last year, RV only one price, RV and electrical another price.
This year I've got electrical but NO RV site--Gotta go now so that I can still try and get a site.
I would need to know the make and model of your Trailer and AC unit as most AC units draw a lot of power and run on 120v Shore power or need an appropriate powered Generator mounted in the Trailer/RV or one that sits outside. For an Air Conditioner to run off a battery you would also need an Inverter to change the 12v DC Battery power to 120v ac power.
If your set up works you ain't missin' anything
It is possible that who ever owned the Trailer before you added all of the needed equipment to make your AC unit run off the batteries.
I DONT THINK THATS HOW IT WORK CONVENTIANL BATTERIES WOULD LAST ABOUT 5-10 MIN IF THAT TO RUN A AC AND HOW DO YOU REPLESISH THE BATTERIES??
PLUG ER IN AND RUN THE AC ITS GONNA BE HOT
I HAVE 4, 6 VOLTS BATTS 100WATT SOLAR PANEL I CAN LAST FOR DAYS NOT HAVING TO SART MY GEN TO CHARGE UP AND I DO LOVE MY TV . AND WHEN ITS HOT I LOVE MY AC