Adding second battery in new 5th wheel

[GREENReactor]

I'm definitely going to need more capacity right away in my Cougar 28SGS. I'd rather not buy TWO batteries as I'd have to if I go to a pair of in-series 6V batteries, and since the 12V one is almost new I can just get one now and go with parallel.

(Of course this is once I figure out where to mount the second one -- I think there's room for a shelf and a second battery in the compartment.)

Any recommendations?

I have yet to see if there's going to be any problem with the existing inverter/charger system with the addition -- any tips from anyone who's done it already would be appreciated, too.....

[MrWizard]

RC toys ?
aquarium pumps ?
Art fairs ?
electric fans ?

your talking battery and NOT discussing load,
12 motors , even small fans mean a lot of load
size of motors ? run time involved

have you already done this before with a different vehicle ?

you info is severely LACKING

[GREENReactor]

So just replace the one 12 volt with 2 (in series) 6 volts and no change to anything else? (Yeah, I know I can upgrade the inverter and such, but no change is immediately required, right?)

I guess I can use the almost new 12 volt that I pull out for other projects...

And BTW, I know that recharging is always important, its just that sometimes I will be using the motors at a place where I can't immediately recharge, so I want to make sure I won't get caught with too deep of a discharge...)

[starcraft69]

do the switch now 2 6v GC batteries, If you have no way to charge you will run into problems quickly no matter if you have two batteries or not you need charging capabilities.

[The_real_wild1]

My toy hauler came with one 12v. Not nearly enough. It was in one of the plastic battery boxes. I took them out and installed 2 6v in the same spot. I use a ratchet strap to secure them. Lots of room for the batteries as long as they are not in boxes.

[2oldman]

Almost everyone on here has installed more batteries. You won't have any charging problems.

[GREENReactor]

I'm about to embark on a power-hog project (involving powering 12v electric motors) that will be used in non-hook-up places where I'll be limited in access to other power (eg, a generator). It could easily drain a single battery within a fairly short period, but two should leave me plenty enough afterward to get by for a while until I can recharge.

I know that regardless of this immediate need, I know I'll eventually be looking for longer battery use time anyway, so I'm ready to move forward on it now. I just need to convince myself that I won't have problems with the charging system or other side-effects that I need to know about.

[2oldman]

Tell us about your usage. Why do you need more capacity?