Forum Discussion

TBammer's avatar
TBammer
Explorer
Nov 29, 2015

12V vs 6V

Recently bought our first travel trailer, and it has been quite the education, including understanding the dual electrical system. One thing I am thinking about doing is adding a 2d battery. I have a 12V of uncertain age (appears to be no more than 3-4 years old) and want to add a second battery for added off line power. Should I just add a second 12V or go for 2 new 6V gold cart batteries?
  • Boon_Docker's avatar
    Boon_Docker
    Explorer III
    Nov 29, 2015
    donn0128 wrote:
    DO NOT mix battery ages.
    2-6 volt batteries will give you approx equal power as two gp24 dual purpose batteries.


    Not quite.

    Two 6v deep cycle will give you approx 220-230 AH. Two Group 24 batterys (12v) will give you approx 160-170 AH.
  • donn0128's avatar
    donn0128
    Explorer II
    Nov 29, 2015
    DO NOT mix battery ages.
    2-6 volt batteries will give you approx equal power as two gp24 dual purpose batteries.
  • Ron3rd's avatar
    Ron3rd
    Explorer III
    Nov 29, 2015
    Two 6 volts would be my choice if you can swing it and have the room. One 12v battery won't cut it for much dry camping

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