Originally Posted by Kboreen
We actually went dry camping, setting up camp at 3 pm. At 10 am the CO2 detector started beeping due to low battery. We did not use much power, and used propane for hot water and the refrigerator, and turned on the furnace once when we woke up to warm up the trailer. We are arguing with the dealer - they claim that we need to upgrade to 6 volt batteries in order to go dry camping, and we disagree. Thanks for your confirmation that we are thinking correctly.
Interesting... we are also pretty new to our RV this spring, learning the ropes as you are. We have a Shamrock hybrid IKSS, purchased used.
We have 1 group 24 RV/Marine battery that came with the rig, and is about 3 years old... we did our first dry camp at a nearby state park in June. Arrived on a Friday evening about 5-6pm, and our older single group 24 lasted until bed time Saturday night when our LP detector low voltage alarm also went off... with no shut off for the thing, I disconnected it to shut the thing up. We had just enough power left to pack up Sunday morning, and get one of the 2 slides in, then connected to the truck to finish up...
I know, it's not ideal, and not good for the battery, but I planned on replacing it anyway soon and researching 6v vs. 12v as you are right now.
I like the two 6v concept, but also like having a 2nd battery on hand just in case there's a problem with the battery... I don't want to have to carry four 6v batteries for that piece of mind, and we don't plan to dry camp that often... and we only camp maybe 3-4 weekends a summer anyway..
For our needs, I'm thinking I'll just get a bit larger single group 27 or 31 Marine/RV battery (whichever is largest and still fits on my tounge rack), and a 2nd one to carry in the truck bed as a spare... then swap out the discharged one for the spare one if necessary during a dry camp weekend...
Two group 24 batteries would fit on my rack, and I could connect them in parallel for convenience, but after reading how a bad cell on one battery in parallel can ruin the 2nd battery quickly, why bother taking that risk with how easy it is to swap out a battery sitting on the tounge in a battery box.