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  1. #1
    New Member
    Join Date
    Aug 2012
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    1
    Location
    clearfield utah
    Tractor
    kubota

    Default Reviving batteries

    Looking for ways to revive "dead" batteries i.e. sealed lead acid, ni-cd etc.

  2. #2
    Veteran Member
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    Jan 2008
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    1,989

    Default Re: Reviving batteries

    Take a look on You Tube. There are dozens of great videos. One guy hooked up a 12V car battery and just touched it to the contact points on dewalt dead battery and brought it back to life.

    Other use another battery in a series to charge a dead battery. I did this and it really works.

    Couple other have a solution to pour in ( I think salt of some sort ) and it breaks up the corrosion in a battery between the plates.

  3. #3
    Elite Member
    Join Date
    Jun 2011
    Posts
    2,517
    Location
    NE Oklahoma
    Tractor
    MF 230 and Mitsubishi D2000

    Default Re: Reviving batteries

    Also search on TBN. There have been a few threads in the past on this subject.

    Ken
    Massey Ferguson 230
    Mitsubishi D2000

  4. #4
    Elite Member Tig's Avatar
    Join Date
    Oct 2006
    Posts
    2,552
    Location
    The County, Ontario, Canada
    Tractor
    Kubota, B7100HST-D

    Default Re: Reviving batteries

    I used to revive old Ni-Cd batteries using a technique similar to what Cat_driver describes. As I refined my technique I learned more about what I was doing.
    Some key points;
    It's dangerous. You need to build a blast box to contain the battery during the process and safely direct the energy of a malfunction.
    Cadmium is a toxic heavy metal. If a battery does go off, you have problems.
    Once I had the information on Cadmium, I no longer had any interest in reviving batteries and I disassembled my set up.
    Steve

    The best things in life are not things.

  5. #5
    Gold Member vabiker23518's Avatar
    Join Date
    Nov 2010
    Posts
    359
    Location
    Keysville, VA
    Tractor
    TM233

    Default Re: Reviving batteries

    Before trying to revive, recommend taking to Advance Auto or Auto Zone...or similar car places. They will conduct a "stress test" to ensure the cells are connected and working. No need to try fixing something that is too far gone. Especially a battery that may explode! Flying acid can ruin your whole day.

    Obviously....I misread the initial post....we're not talking tractor batteries. My bad.
    Last edited by vabiker23518; 08-07-2012 at 03:27 PM. Reason: Misread original post

  6. #6
    Elite Member Briana03's Avatar
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    Jul 2010
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    Location
    San Diego, California
    Tractor
    None

    Default Re: Reviving batteries

    Welcome to TBN

    I moved your thread to the Parts/Repairs Forum.
    Briana
    TBN Support

  7. #7
    Veteran Member
    Join Date
    Jul 2004
    Posts
    1,924
    Location
    Bancroft, Ontario
    Tractor
    JD4300

    Default Re: Reviving batteries

    While I have dismantled and replaced bad cells in Ni-Cad drill batteries, I would never expect to get much more life out of them before the next cell dies. As far as lead acid batteries are concerned I don't believe in free lunches.....

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