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er78mph's avatar
er78mph
Explorer
Feb 25, 2016

Costco Batteries

I was wondering what batteries to buy, Costco had two different batteries. One was a 24DC (Fitment code 13) and the other was a 27DC (Fitment code 14). I currently only have one battery and would like to add a pair. I mostly do weekend trips with full hookups but want to get into dry camping eventually. Thanks all in advance!!

13 Replies

  • If you have a battery box I would measure the inside dimensions before purchasing a couple GC-2 batterys. The GC-2 is 10.30 inches (long) X 7.13 inches (wide) X 11.15 inches (high).
    The GC-2 (6 volt) is about 1/2 inch wider and 2 inches taller than a GRP-24.
  • The GRP ** BCI numbers will have little effect when using two batteries. Look at a battery information chart and the box sizing (if using one) to get an accurate fitment.
    FWIW, 6V GC2 batteries have the same footprint as a grp 24 battery. I'd suggest to buy two 6V GC2 batteries.