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Open Roads Forum  >  Tech Issues

 > 4 X12 = 6 X 8?

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MEXICOWANDERER

las peƱas, michoacan, mexico

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Posted: 10/16/20 09:44am Link  |  Quote  |  Print  |  Notify Moderator

The BCI, Battery Council International, has been striving for uniformity in plate composition in all car jar batteries for at least 20 years. This means minimal differences in alloy composition. Trojan was one of the few holdouts but incrementally reduced the precentage of antimony in its positive plates on car jar BCI batteries. Another concession is the transition of and changes to the negative plates which results in a hybrid battery.

Up until the mid eighties BCI truck batteries had standard 5% Lead antimony / Lead dioxide plates. Most of those batteries are now indistinguishable from auto RV batteries. Price oriented "golf car" batteries are drifting away from original configurations. Primarily this results in how standard maintenance rote is applied.

TomG2

Central Illinois

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Posted: 10/16/20 10:29am Link  |  Quote  |  Print  |  Notify Moderator

mr_andyj wrote:



Bring oars just in case you deplete the battery from too much trolling and cannot start the big motor back.


No oars wanted or needed as I will never have the golf cart more than 1,000 feet from home at my girlfriend's place. I can recharge there if you think that is too far to stretch it. Even using 50% of the 436 Amp hours available should suffice.

Gdetrailer

PA

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Posted: 10/17/20 01:12pm Link  |  Quote  |  Print  |  Notify Moderator

TomG2 wrote:

Gdetrailer wrote:

Group 27?

Those are RV/Marine batteries which are "combination" starting/deepcycle, they do either job poorly. .go to Sam's or Costco and get their 6V or 8V GC2 batteries..


They are labeled Deep Cycle with 109 AH rating. No starting rating. Both are less than six months old and work great for camping trips.

8-6's will not fit.


Go with SIX of 8V GC2s instead which is most likely what your Cart was built for.

Group 27 ARE combination batteries and 109 Ahr is HALF of what a GC2 battery is rated. And YES those combination batteries will have something to the effect of "DEEP CYCLE" written on them, it is a marketing ploy and is deceptive at best.

Sams and Costco also carry 8V GC batteries and they WILL outperform any group 27 out there for a Golf cart application.

Getting the correct battery will actually be cheaper in the long run, you will be killing the group 27s even with a measly 1/4 mile run..

Besides, pushing a golf cart by hand doesn't sound like much fun when the group27s decide to give out at the wrong time..

TomG2

Central Illinois

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Posted: 10/17/20 01:56pm Link  |  Quote  |  Print  |  Notify Moderator

Gdetrailer wrote:



Besides, pushing a golf cart by hand doesn't sound like much fun when the group27s decide to give out at the wrong time..


Thanks to all for their opinions and suggestions. I am fully aware that 6-8's is the "best" for long term and long range carting. That was not my question. I simply wondered if a 48 volt golf cart charger would have a problem dealing with four batteries instead of six. I did not see how it could, as it will still be "seeing" 24 cells. The cart will probably see a couple of years of light duty before it is gone. $300 is less than $600.

I am not worried about being stranded 500 feet from home and having to use my ATV to drag it to my site. I find it hard to believe that Johnson Controls would label some of their batteries "Deep Cycle" and others on the adjacent shelf "Deep Cycle/Marine Starting". The double rating for 6's is a play on words as two six's equal 220 AH and two of my group 27DC's equals 218 AH when both are talking 12 volt.

Bill.Satellite

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Posted: 10/17/20 07:03pm Link  |  Quote  |  Print  |  Notify Moderator

TomG2 wrote:

We have a 48 volt golf cart which sees very light use. Maybe two miles per week. The six 8 volt batteries are getting tired. I already have two group 27 12 volt Deep Cycle batteries and am asking if the charger and any other electronics would recognize and utilize the 48 volts provided by the four 12's.

I already know some will say, "Get 6-8's" or maybe "8-6's". I am hoping that the 4 12's would power the cart for a couple of miles a week with charging readily available. $300 vs $800 makes me want to try it.

Quick, short answer is yes! Your 48V charger will work just as well with 4-12V as it does with 6-8V.
Other issues with amp matching and age matching may cause you issues but 48V is 48V no matter how you put it together.


What I post is my 2 cents and nothing more. Please don't read anything into my post that's not there. If you disagree, that's OK.
Can't we all just get along?

BFL13

Victoria, BC

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Posted: 10/17/20 07:12pm Link  |  Quote  |  Print  |  Notify Moderator

If four 12s, you can do it with a 12v charger, one batt at a time.

I used a 12v charger to recharge a friend's 36v cart where its charger was duff. It had six 6s. Did one pair of 6s at a time, then connected them again as a 36.

Six 8s makes it hard without either a 24 or a 48 charger.

ISTR this came up before and they had 36v carts with an extra 6 for 42 volts. Tricky!


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