New battery setup

nayther wrote:

Shaft0201 wrote:
After camping this last weekend and getting a couple dead batteries I’m now on the market for the following... two 12v batteries for doing a fair amount of boondocking. I know there is a lot of talk about 6v vs 12v but I’m just more comfortable with 12v for the room and to keep ALL batteries 12v on my trailers. Would like to limit running my generator (Onan 4K) to a couple hours a day for charging if that possible. I’m sure my 2008 extreme megalite 25ST has the stock converter and not even sure what it is putting out for charging. We have a baby and a toddler so running the furnace pretty steady when chilly and TV off and on a couple time throughout the day is a must when kids are present, but all interior lights are now LED and we make sure we don’t use them unless needed, but my 2yr old does like to have one on for a night light. Fridge will run nonstop and furnace often.

I got a nice sized battery box that I will vent and be mounted on the tongue between LP tanks and TH front.

Will also want to add a nice Voltminder with alarm so I don’t let the batteries get to low and ruin them.

Thanks all.

My first/best suggestion is to upgrade the converter to a multi-stage high output model based on your anticipated battery load, somewhere about 60 amps should suffice. Check out bestconverter.com, dude is super helpful and will match you up. The changeout is easy. I prefer two 6v. The multistep smart charger will charge much faster by remaining at a higher output longer before stepping down. Plus it won't boil your batteries if you leave it connected.