car battery shelf life
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Thread: car battery shelf life

  1. #1
    3 wheelin Lifetime Platinum MemberSuper Moderator jaged's Avatar
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    car battery shelf life

    How would a yellow top be affected if it had beed sitting for 2 yrs in a cardboard box. Im unsure if there was a charge on it or not. Would the charge capacity be affected? Or the ability to hold a charge at all?

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  3. #2
    Excelcier Strikes Back Moderator Excelcier's Avatar
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    RE:car battery shelf life

    Optima's have an internal resistance and they will drain completely in about 2 weeks if you leave them, maybe a month on a shelf if it's not connected. Just charge it up and go!
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    NECO Member whitecat99's Avatar
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    RE:car battery shelf life

    All batteries have internal resistance. It is my understanding that Optima batteries have lower internal resistance than conventional batteries. Optima batteries can hold a charge for a long time on the shelf. They claim you can leave them on the shelf for a year before they need to be recharged. Yellow top batteries are a deep cycle type and it will not hurt to completely discharge them then recharge them. They are made to stand up to that type of use. The Red Top on the other hand likes to have its charge maintained but will resist being near complete discharge better than conventional batteries. Just charge your Yellow Top and use it. It is recommended to charge the Optima with a specific type of charger. I do not remember what they are called but most modern chargers are suitable.
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    NECO Member Crispy's Avatar
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    RE: car battery shelf life

    well I recently had a Optima Yeller top crap out on me... it was in my car less than 2 years and sat on the shelf prior at a store for over 1 year... warranty was over so I was out the battery... I bought a red top to replace it and waited on a list to have one sent to me as soon as it was produced.. it was only DAYS old when I got it..

    bottom line is how it was charged once it was bought.. the item needs to be on a very very low trickle charge for about 24 hours prior to installing.. if you buy the item from someone who does not initially charge this way you will most likely have it's life ended prematurely like mine was - hense the reason why I bought from a reliable source and bought a fresh battery so I would have the entire warranty period.
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    NECO Member h8beingbored's Avatar
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    RE: car battery shelf life

    . . . the yellow top is the one most used for cars with sound systems right? i need to get one soon . . .

  7. #6
    NECO Member Crispy's Avatar
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    RE: car battery shelf life

    the yeller top can take more abuse than a red top but keep in mind that the yellow top only has a 1 year warranty and the red one has 3 years with a portion prorated but its alot longer than the yellow ones
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  8. #7
    NECO Member h8beingbored's Avatar
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    RE: car battery shelf life

    so i should go with the red top?

  9. #8
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    RE:car battery shelf life

    Originally posted by: Excelcier Optima's have an internal resistance and they will drain completely in about 2 weeks if you leave them, maybe a month on a shelf if it's not connected.
    You're thinking of dry cell batteries. Optima's are very different.

    Jaged,
    Since you already have a yellow top, go ahead and charge it up and use it. Normally you would want to use a red top Optima. The yellow is DEEP CYCLE. So unless you run a lot of lights and amps <u>with the engine off</u>, it's not the best suited battery (but still better then your standard car battery). If you look at Optima's web page, the technical specs show the red top's performance is better as it's designed for normal car use.

    I run red tops on both my cars and they work just fine. Plus I saved a few dollars by not getting the yellow tops!
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