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Thread: Harley OE Battery Lifespan

  1. #1
    HCG Technical Senior Member JD's Avatar
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    Harley OE Battery Lifespan

    My stock FLHR battery is 5 years old now. Next season will be year #6. I don't want to replace it prematurely, but don't want to find out the hard way it's lifespan is over either. Assuming everything on the electrical system is working properly, and the battery is put on a tender during winter storage, when is a good time to replace it? How long are you guys getting out of the AGM type sealed OE HD batteries?

  2. #2
    Administrator Senior Member Wide's Avatar
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    Re: Harley OE Battery Lifespan

    I never got more then 3 years out of one that goes through winter cold
    Warm weather add a year so your doing good

    Once I change it I remove clean add star washers to all connections cover with dialectric grease .

    Always seems the fresh battery will find that weakest connection
    .-/c-.,_ /
    (_)'==(_)


    "parts left out cost nothing and create no service problems" Boss Kettering

  3. #3
    Senior Member Senior Member xxxflhrci's Avatar
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    Re: Harley OE Battery Lifespan

    I replaced my 2000's original battery at 5 years/52k miles out of paranoia...I still have it and keep it charged up. I used it not long ago to jumpstart a vehicle with a weak battery.

  4. #4
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    Re: Harley OE Battery Lifespan

    Quote Originally Posted by xxxflhrci
    I replaced my 2000's original battery at 5 years/52k miles out of paranoia...I still have it and keep it charged up. I used it not long ago to jumpstart a vehicle with a weak battery.
    +1. I swapped out my old battery at 5 years too. I was about to head to SC and didn't want to discover that I'd pushed my luck. It wasn't giving me trouble, I just retired it.
    A heart stained in anger grows weak and grows bitter, you'll become your own prisoner as you watch yourself sit there wrapped up in a trap of your very own chain of sorrow.
    -John Prine

  5. #5
    Administrator Senior Member Wide's Avatar
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    Re: Harley OE Battery Lifespan

    Man everyone gets more out of their battery then me, always been that way

    I'm going back to kick only LOL
    .-/c-.,_ /
    (_)'==(_)


    "parts left out cost nothing and create no service problems" Boss Kettering

  6. #6
    HCG Technical Senior Member Relic's Avatar
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    Re: Harley OE Battery Lifespan

    I still have my original battery in my 2000 Night Train! Been through 2 regulators though.
    My Golf Swing is so bad, I look like a caveman killing his lunch.

  7. #7
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    Re: Harley OE Battery Lifespan

    Quote Originally Posted by Relic
    I still have my original battery in my 2000 Night Train! Been through 2 regulators though.
    First off..... Great to see you my friend!!! WOW...


    I keep my battery on the tender as soon as it goes into the garage. It is now 6 winters old. I might get a new one in the spring if I see a sale on them. But I like the star washer idea, thanks wide. I have the heated gear and tender pig tails on the posts too!
    It's not the years, it's the mileage!!

    When seconds count, the cops are moments away!!

  8. #8
    HCG Technical Senior Member JD's Avatar
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    Re: Harley OE Battery Lifespan

    I think I will buy a new battery in the spring anyway. 5 years is an acceptable service life in my opinion, and I wouldn't want to risk an electrical system component being damaged or being stranded on account of being cheap and/or lazy LOL.

    Is there a "core" charge from H-D when buying a new battery?

  9. #9
    Senior Member Hardcore Biker
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    Re: Harley OE Battery Lifespan

    Quote Originally Posted by Relic
    I still have my original battery in my 2000 Night Train! Been through 2 regulators though.
    You're doomed. I was bragging about my 8 year old batteries in my 00 RK and 00 buick, both went out a week apart.
    JD Tennessee Squire 1999
    #58 Lambert HOF "90
    "Stupid and Ignorant"

  10. #10
    Senior Member Senior Member GzrGldGeo's Avatar
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    Re: Harley OE Battery Lifespan

    My battery is at 4 years and going strong. Thanks for the post and responses.
    Cheap stuff ain't good! Good stuff ain't cheap!

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