I just wanted to make sure these are the 6v Costco batteries people have been buying for their travel trailers. Most reviews I read about them have been positive.

I bought a pair in the Albany Costco last month. So far I'm liking them. Didn't fit so well in the space allotted on the tongue for a single 12v battery so I had to manufacture a raised mount. If you're anywhere near Albany, Lassen RV has several new old stock double battery boxes in their attic. There was no price on them so the kid at the counter sold me one for $20!

I use two of the same ones on my HTT and soon on our new TT. Excellent battery for the price. I'd rather have a pair of T-105 Trojans but the value wasn't quite there for me.

Yes these are the ones - Look to see if they have the slightly larger AH rating for just a few $$ more. These appear to be only the 208AH rating models. The nicer ones will be 220-225AH rating and more like the TROJAN T105 batteries. Two of these 208AH COSTCO 6VDC batteries in series will give you 208AH capacity at 12VDC. Two groups of the 6VDC batteries in parallel will give you 416AH battery capacity at 12VDC.I too would rather have the TROJAN T105's but they cost in the neighborhood of $150 each so you can see the savings here.Also I have had good luck just bringing in any dead battery I can find to use for the CORE fee. Most of the time they don't even look at the CORE batteries.I will be replacing my battery bank with new batteries soon. My original 2008 GP24 standard issue Interstate 85AH batteries are really pushing their life span now. I really want to get the Trojan T1275 150AH 12VDC batteries but they run around $200 each. Will most likely end up with two groups of two 6VDC GC2 batteries giving me around 450AHs total capacity from the two banks. Four each of the Trojan T1275s would give me around 600AH of capacity but there is a large difference in cost here between $360 for the COSTCO batteries compared to $800 for the Trojans. Is the extra 150AH capacity worth the extra $450... Probably not...I think if you really watch your COSTCO battery performance and take care of when to re-charge the batteries the COSTCOs should last a long time for you. They may not be as rugged as the well proven Trojans...Roy ken

Are these the right Costco 6v batteries? | Good Sam Community

22 Replies

BurbMan
Explorer III
May 01, 2014
I just pulled the trigger on a pair of these. Sign at the store said 208 aH, but everything I am reading online says there are 220 aH. Anybody know the real rating on these #245725? Guy in the store said they are made by Johnson Controls, same company that makes them for Interstate.

I am retiring a pair of Interstate GC-2's that I bought back in 2006, and they still hold up OK but they were used and abused by my old WFCO converter/charger. I am confident that the new PD converter and thicker gauge wiring to the batteries will keep them lasting longer.

I really wanted the Interstate GC2-XHD that they recommend for RVs at 232 aH, but at $153 vs $84.49 for the Costco it was hard to justify the $137 difference for the pair.
tragusa3
Explorer
Mar 30, 2014
Yes, but I'll have to have a friend with a membership bring me. Stay tuned.
westend
Explorer
Mar 29, 2014
tragusa3 wrote:
Thanks. I bought a second cheap box at Walmart.

However, I went to Costco today (with my core and everything) and they don't sell them at my local store! Heck. I'm hoping they can bring stock in from another store.

FWIW, their website doesn't appear to show any batteries.
Do you have a Sam's Club nearby? I bought 2 x 6V's (Energizer) at Sam's and they are doing the job. I think I paid about $180, including the core and State tax.
tragusa3
Explorer
Mar 29, 2014
Thanks. I bought a second cheap box at Walmart.

However, I went to Costco today (with my core and everything) and they don't sell them at my local store! Heck. I'm hoping they can bring stock in from another store.

FWIW, their website doesn't appear to show any batteries.
westend
Explorer
Mar 27, 2014
tragusa3 wrote:
I haven't really looked at one closely before. Sounds like one of them is larger than a typical Group 24?

Thanks for the strap tip and the link. Although, I'm going to look for a cheaper option. $50 for a plastic box doesn't feel right. ;)

The footprint of a 6V GC2 is identical to a 12V grp 24, the height is different.

That Century box is built a bit better than your standard ABS blow-molded box. If you're just looking for the most inexpensive solution, buy two grp 24 boxes and wire between them.

FWIW, I repurposed a metal tool box for my tongue box and built a wooden box (lined and vented) for an interior box. Lots of ways to get feline fur.
tragusa3
Explorer
Mar 27, 2014
I haven't really looked at one closely before. Sounds like one of them is larger than a typical Group 24?

Thanks for the strap tip and the link. Although, I'm going to look for a cheaper option. $50 for a plastic box doesn't feel right. ;)
Cotay
Explorer
Mar 27, 2014
westend wrote:
tragusa3 wrote:
I'm about to go out and buy a pair of these. What sort of boxes are you guys using. Where can I find a long box that fits these side by side?

Century Plastics

That's the one I used on my HTT. Its a good box but you will need a battery box strap (one isn't provided) and I recommend getting at least one 6V battery carry strap (http://www.ebay.com/sch/sis.html?_kw=BATTERY+LIFT+STRAP+FOR+GOLF+CART+BATTERIES)

The carry strap is extremely helpful in lifting these monsters out of the box...otherwise you will find that it is extremely difficult to do.
westend
Explorer
Mar 26, 2014
tragusa3 wrote:
I'm about to go out and buy a pair of these. What sort of boxes are you guys using. Where can I find a long box that fits these side by side?

Century Plastics
OregonTRX4
Explorer
Mar 26, 2014
I bought 2 of these. 9.xx with prime. Wont be here until this weekend to test fit.

http://www.amazon.com/NOCO-HM306BKS-Snap-Top-Battery-Box/dp/B00316KU6E
tragusa3
Explorer
Mar 26, 2014
I'm about to go out and buy a pair of these. What sort of boxes are you guys using. Where can I find a long box that fits these side by side?