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Tin-bender's avatar
Tin-bender
Explorer
Feb 21, 2019

One battery or two

I know this question has been answered before, but not for me:)

Buying a new travel trailer and the dealer recommends a single 12 volt battery. We have had double 12 volt batteries on our travel trailers in the past and had no issues with that arrangement. We don't do a lot of boondocking, maybe a couple times a year for a couple days. Will a single battery be sufficient?
Thanks for your time
Tinbender

36 Replies

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  • twodownzero's avatar
    twodownzero
    Explorer
    Feb 21, 2019
    I'd go to 6 volt batteries and definitely get at least two, if not four. It's really more about amp hours than number.
  • deltabravo's avatar
    deltabravo
    Nomad
    Feb 21, 2019
    time2roll wrote:
    Get two. Not sure I would have this dealer install the second.


    Ditto... and especially if they only recommend "one".

    I put two batteries in all my RVs.
  • Lwiddis's avatar
    Lwiddis
    Explorer II
    Feb 21, 2019
    An option for one battery would be the Trojan T1275...12 volts 150 amp hours.
  • BobsYourUncle's avatar
    BobsYourUncle
    Nomad
    Feb 21, 2019
    Batteries are like cubic inches:

    The only thing better than cubic inches is MORE cubic inches!

    So using the "Bob" philosophy, 2 batteries are better than one!

    I would go with 2. Forget what the dealer says, he has likely never boondocked a day in his life. For those of us that have, one 12V battery can run out in a hurry if you're not careful.

    Best is 2 - 6V deep cycle golf cart batteries or similar. I run 4 X 6V
  • enblethen's avatar
    enblethen
    Nomad
    Feb 21, 2019
    Somewhat depends on style of camping. If you do a lot of dry camping then two six volters would be the best bang.
    If you do all campground with hook ups, then a single 12 volt battery.

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