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6Volt Battery Group Size

Discussion in 'Early CJ5 and CJ6 Tech' started by mtdave, Nov 14, 2011.

  1. Nov 14, 2011
    mtdave

    mtdave New Member

    MONTANA
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    Oct 21, 2011
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    The local tractor supply is having a 15% off everything sale today so I thought it would be a good time to buy a new 6volt battery. What is the proper group size for a 6volt in a '57 CJ5?
     
  2. Nov 14, 2011
    mtdave

    mtdave New Member

    MONTANA
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    Well I found my own answer, I just went to BatteriesPlus website and used their application chart. Group size 1, go figure. Sounds like my parts career, I've been in the parts business since part numbers were one through ten.
     
  3. Nov 17, 2011
    johnny and sandy

    johnny and sandy Member

    San...
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    Nov 9, 2008
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    Dont forget the Battery Cold Cranking Amps jeep toss
     
  4. Nov 18, 2011
    mtdave

    mtdave New Member

    MONTANA
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    Batt+ website said 625CCA so I guess that's what I'm looking for. Does that sound about right? I saw one at the tractor supply that was like 800 or 900CCA, that thing would probably strip the teeth off of the flywheel.
     
  5. Nov 20, 2011
    cpt logger

    cpt logger Member

    Western Colorado
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    Feb 6, 2006
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    Your starter will only draw the Amps it needs to turn the engine over. So having excessive CCA is alright. I have started my 6 volt VW from a Catterpiller Battery I think it had a CCA of 1500. Heck it was as big as my front seat! No problems!!

    CCA means Cold Cranking Ampers. A rule of thumb is to get AT LEAST the same CCA as your engine has cubic inches. Thus in theory, a 225 V6 would need only 225 CCA. If you live in colder climes, then up that a bit. I would get the battery with the largest CCA that would fit in the battery tray.

    IHTH, Matt W.
     
  6. Nov 21, 2011
    mtdave

    mtdave New Member

    MONTANA
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    I saw an 8volt battery at the tractor supply Saturday, I wonder what that fits? I've never heard of 8 volts but would the extra volts be too much for a 6 volt system? Just thinking out loud. Also I want to put a solar charger on my CJ, I found one at Cabelas that they use for their game feeders, has anyone ever tried one of those? I have two 12 volt solar chargers I bought at Northern Tool on my M38 and they work great.
     
  7. Nov 26, 2011
    cpt logger

    cpt logger Member

    Western Colorado
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    Feb 6, 2006
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    108
    Dave, I have installed an 8 volt battery into one of my VW Bugs. You just have to bump the voltage regulator to about 9.25 volts. Everything lives well with this voltage. BUT this is just a stop-gap measure. It will mask some problems, but they will come back if you do not fix the original problem.

    The pluses are, brighter lights, easier starting, turnsignals work better, as does the windscreen wipers. The minuses, you can not use an inverter to up the voltage for real cool accesaries, such as sterios, amps, etc. Many "mechanics" will realy freak out with your 8 Volt system. It is also hard to get battery chargers for 8 Volt batteries. I would not do this again, but it is possible.

    I recomend you either Fix your 6 Volt system, or "up-grade" to a 12 Volt system. IHTH, Matt W.


    PS. All that being said, my Bug is still 8 Volts today 30 years later, just lazy I guess. The tube type radio still works as does everything else. If i were to do this again, I would go with the 12 Volt system.
     
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