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Thread: tm battery charging question

  1. 06-17-2012, 04:19 PM #1
    buffresources
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    Default tm battery charging question


    I have two marine batteries I need to charge...I tried a trickle charger for 12-15 hours....my minn kota meter shows both of them fully charged but when I test them with a hydrometer no cells have 4 balls floating (which indic full charge), several have 3 but about 1/3 of the cells have only 2.

    So what gives?

    Is the cheap...but new walmart hydrometer not accurate?

    Should I use a 2 amp/hr charger?

    Or are both batteries going south?
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  2. 06-17-2012, 04:30 PM #2
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    FAADAN
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    They have probably lived a full life and are ready to be replaced. I would try charging them overnight with at least 5 amp charger and try you hydrometer again but once they get so old, they have nothing left to give.
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  3. 06-17-2012, 08:08 PM #3
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    CatFan
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    Quote Originally Posted by FAADAN View Post
    They have probably lived a full life and are ready to be replaced. I would try charging them overnight with at least 5 amp charger and try you hydrometer again but once they get so old, they have nothing left to give.
    +1

    You aren't going to get anywhere trying to charge a battery with a low rate charger if it has any age on it.
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  4. 06-18-2012, 10:23 AM #4
    buffresources
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    thanks guys!!!!! saved me $160 for batteries!

    the heavy charger saved the day...left it on 3 amp/12 hours and all the cells now show 3-4 balls or fully charged

    Thanks again
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