Welcome to the forum WVMike. do get to the other side of Huntington? We stayed in MIlton a few years ago. Visited the Blenko glass factory and the famous (or infamous) Hillbilly Hot Dog. That was something. Also have cousin around Charleston that we visit with.
Anyway, to your question. You have two seperate electrical systems in your camper. 120 v ac and 12v dc.
The 120v ac system powers all the duplex outlets, the air conditioner compressor and fan, the 120v ac heating elements int he water heater, refrigerator, air conditioner if it has a "heat strip". The 120v ac also powers the power converter which charges the battery.
The 12v dc system is powered by the battery. The system is used for all lighting, to operate the slides and the stabilizers and jack (if so equipped), the radio, the tv antenna booster, and the control boards for the refrigerator, water heater, air conditioner control board & thermostat, the furnace control board and the furnace fan.
The 12v dc system will operate the items above but operating the furnace will drain a battery very rapidly. Your battery (supplied by the dealer) is most likely not a true deep cycle battery. Dealers typically install a "marine deep cycle" battery which is designed to start the boat motor and maybe run the anchor light overnight. If the battery has a CCA (cold cranking amps) rating then it's not a true deep cycle.
If your trailer came from the factory with a battery disconnect switch it WILL NOT disconnect all the circuits. There will be a parasitic load from the CO/LP leak detector, the radio memory, etc. that will drain down the battery in just a few days of setting. The only way to prevent this battery discharge is to add a disconnect to the negative battery cable or remove the negative cable from the battery. Most folks that "boondock" or dry camp with no hook ups available will install two batteries. Most use two 6 v dc golf cart batteries in series as they offer a more storage capacity and tolerate deep discharges.
I know thius a lot of info to digest. Hope it helps.
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Marshall
2012 Laredo 303 TG
2010 F250 LT Super Cab, long bed, 4X4, 6.4 Turbo Diesel
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