Postby Wrench » Sun Mar 21, 2010 6:27 pm
Yeah, I got a tip: dont skimp when buying batteries! Once you get a good set, keep them charged. The battery is the heart and soul of the RV, so I wouldnt recommend taking a chance on durability.
I have heard good things about the ones from Costco, but dont have any personal esperience. We have been selling the NAPA batteries and they have been rock-solid for us. We used to sell Interstate batteries, but they weren't so reliable. And if you ever have a problem on the road, there is usually a NAPA nearby.
...and stay away from Walmart batteries!!
You can go with 2 6v in series or 2 12v in parallel. The 6v setup typically has more AH capacity. If you have a generator, you really dont need 2 batteries. I know when I go dry-camping, I could typically get about 2 days out of one 12v group 24 running everything. The furnace will have the largest draw, so you should get more out of your batteries if it is warm enough that you dont have to run it.
You currently have one group 24 battery. You may want to look into replacing it with one group 27. It's a little larger, but will fit in there just fine.
No matter WHAT you buy, they will all die a drastic death if they freeze when they are dead. When a battery is dead, the electrolyte is actually water, swells when frozen, and physically splits the plates apart and destroys the battery. If it is kept charged, the electrolyte will not freeze and swell like that.
Do you dry-camp alot for extended periods of time?
Paul
'84 XJ, '19JL