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BFL13's avatar
BFL13
Explorer II
Aug 04, 2013

12v Golf Cart Battery Question

Sorry, don't have enough internet access at the moment to do a proper search, so I thought I'd ask here :)

Talking with a local guy today who seems to know his stuff. He gave me a tip that the local golf course has carts that use four 12v batteries for their 48v instead of six 8v batts.

He says these 12v batts are Trojans and they have about the same AH as a pair of 6s. If so, they must be about 150 lbs each!

Does anyone know of such a thing? The place that supplies them is near, so I will check it out next week. The real tip, is he said they often swap out batteries with the golf course and you can get two-year old ones of these for $60 each!!! Apparently the hippy off-grid solar types around here snap these up in large quantities.

If this is all true, I am thinking it would be fun to get one and do a desufation routine on it and so forth and it would be like having another pair of 6s for as long as it keeps going. ????

47 Replies

  • Remember that in a golf car there is no parallel connections, whether 6v or 12v. If those golf cars run on 12v, you would not see any 12v batt.
    I don't like parallel connections, p e r i o d. So its a no brainer at 6 volt batts. for me,.....even tho I'm stuck w/ 2 nearly new (existing) 12v for quite a while I'm think
  • Here is a thread I started some time ago when I was interested in converting to T1275 batteries. I gave it up because of the cost and lack of local availability.
  • So if one says another battery is good, how does it compare to the T-105 and T-125? Nice thing is the 6 volt come in "Easy" to lift 62 or 67 pound packages.

    I did use a 5SHP Trojan batterie in a one man manlift. It was 85 pounds and 165 AH at 12 VDC. It was much larger than a group 27,and difficult to move around, unless you are able to lift 85 pounds.

    Have you heard of a 8D battery? We used those 120 pound 12 volt batteries in the generators, with 8.3L and larger diesel engines.

    I would much rather install 4 of the 67 pound T-125's than a pair of 8D's. Those are just to heavy - at 120 pounds each.

    So how does the 8D compare to the T-105? Well the water capcity is about the same per cell, so is the lead content. Just the 8D is in one reall REALLY difficult to lift package. Lifespan might be the same, just I don't want to lift it.

    Changing golf carts from 36 to 48 volts means the amperage can go way down, and wattage (therefor horsepower) is the same. This can mean smaller wire size, smaller controller amperage rating, motor that can be smaller, with smaller wire internally due to the decreased amperage. Going to 72 volts might be next. That would be 6 each 12 volt batteries in a row, or 9 each 8 volts. Many car conversions are running 72 to 144 volts, with either 6 or 8 volt batteries.

    Fred.
  • They do it to SAVE on copper wire BFL13. Half the amperage, smaller switches, smaller motor. Same wattage. 48 volt chargers are common.

    The issue is THE BATTERIES. How do they stack up against the T-105. Not nice when they float belly up at 70% of the lifespan. The sales PRESSURE PRICE COMPETITION for 12 volt batteries versus 6 volt was a joke.
  • wa8yxm's avatar
    wa8yxm
    Explorer III
    I think (Emphasis on THINK) that Club Car has gone the 12 volt route

    Might be E-Z-Go however.. But it's one of them.

    YES I have seen, and worked on, such a golf car
  • RoyB's avatar
    RoyB
    Explorer II
    They may be using the Trojan T1275 models. They will be lacking in Battery Reserve I imagine... These weigh 82LBs each...

    Here is a PDF file showing the various specifications of the Trojan Battery line up..

    Cost is going to be hugh factor...
    TROJAN BATTERY LINE-UP

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