Best battery for ‘04 3.7L Sport?

Discussion in 'KJ General Discussion' started by Redleg, Feb 10, 2020.

  1. Redleg

    Redleg New Member

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    Would appreciate any recommendations. I currently have an Exide battery, size 34X, just 2 yrs old. Left it disconnected for 3 months while I was working on the vehicle, and it was totally dead. Maybe this is normal? Still, just wondering if anyone has had better experience with a battery which can handle cold weather (Chicago area, so -20F isn’t unusual)
     
  2. HoosierJeeper

    HoosierJeeper Gold Supporter/Admin Staff Member Administrator

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    I like using AGM type batteries. Mine had no issues starting up here even last year when it was neg 35.
     
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  3. LibertyTC

    LibertyTC Well-Known Member Staff Member Moderator

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    Best most powerful Battery for your Jeep will be an AGM (absorb glass mat) style of battery.
    Excellent in Cold Weather!
    The #1 best fully sealed AGM battery is expensive, virgin lead, no catastrophic failures, and lasts 10+ years.
    Odyssey Shelf life 2 years, without need for charging. Top & Side posts.
    I run a Odyssey PC-1500 34/78 under the hood of my Jeep. 9 years old now. New on Midtronics load test is over 1000CCA.
    [​IMG]
    You will never have any corrosion on battery terminals with fully sealed AGM's.

    [​IMG]
    Non virgin lead AGM, less expensive:
    [​IMG]
    In My Sedan I have an Exide Edge AGM, 5 years old, still reads 850CCA.
    [​IMG]
     
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  4. mrlavalamp

    mrlavalamp Full Access Member

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    you get what you pay for.

    Here, $100 battery's with a 3 or 5 year warranty almost never make it past 2 years. Sure you get some warranty to cover cost of a new one, but who wants to deal with the hassle?

    The heat kills batteries because even though most are "sealed" now they are only sealed when it comes to putting water back in, they still vent some gases out and this leads to drying up in the summers.
     
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  5. Redleg

    Redleg New Member

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    This makes a lot of sense. Gives me a great sense of confidence knowing all your experiences. Thanks so much for the input! Gotta go shopping.
     
  6. jeeptorino68

    jeeptorino68 Full Access Member

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    Superstart platinum
    Group 34 is the biggest you can fit