Trying to nurse a seven year old deep cycle back to normal.




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  1. #1
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    Default Trying to nurse a seven year old deep cycle back to normal.

    I have a deep cycle battery that settles on 12.5 volts after 2 days off the smart charger. It stays there for more than a week. I have now connected an analog amp meter in line with the charger, trying to revive its original health, and found that when it charges it is only at 2 amps, and then the voltage will go up in excess of 13.4 V which will drop back the moment the cyclical charge regime stops charging. Is this normal? I will leave it on charge and see if the battery will eventually keep a full charge once it reaches 14.4 V.

    I have a suspicion that I have neglected to leave the charger on for long enough to fully charge the battery, or rather, I hope this is the case.
    Last edited by Poen; Yesterday at 10:13 AM. Reason: correction of text
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  2. #2
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    Default Re: Trying to nurse a seven year old deep cycle back to normal.

    Most car alternators run at around 13.4v during a charge cycle. And 2A is great for a slow trickle charge.
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  3. #3
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    Default Re: Trying to nurse a seven year old deep cycle back to normal.

    I had the same with an old deep cycle. I charged it with a cheap 6Amp charger and left it at 15.5V for 2 hours. Good as gold again.....this was 2 years ago and still keep the charge at 12.68V after a month of standing.

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