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Corrosion on battery terminals of chess computer

Discussion in 'Electronic Basics' started by Darren, Jun 20, 2005.

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  1. Darren

    Darren Guest

    Hi again

    I've just bought a second-hand chess computer and have found corrosion on
    the battery terminals, due to battery leakage.

    One of the terminals is green, it's that bad.

    The unit is very expensive. The terminal is fairly large and is for a 'C'
    size battery.

    Should I use steel wool? or CLR? (Calcium Lime Rust)? to clean the

    Is it possible to clean, or clean and coat this terminal for decent

    I have an ac adaptor but would like to use batteries on occasion also.

    Thanks in advance.

  2. Darren

    Darren Guest

    Sorry I found the answer.

  3. Guest

    And that answer would be????
  4. Darren

    Darren Guest

    Any advice below is provided at your own risk and you should consult
    professionals in electronics, chemistry, medicine, bio-mechanics and a
    certain Space Administration first.

    Although I'm still researching the solution, here's what I've found out so

    Don't use steel wool or anything that will leave conductive particles

    You can use:

    Fine sandpaper to clean the contacts, although be careful with the contacts,
    as they may be fragile. I seem to remember something about rubbing the
    metal surface off, which was a concern, but if the contacts are copper? may
    be fine.

    If the corrosion is foamy or more extreme, then dab hydrogen peroxide on
    cotton buds? and clean the corrosion over one or more sessions (be careful,
    do so at own risk, consult professionals first, don't do it if you're going
    to sue anyone!, use appropritate protective wear for skin and breathing??).

    If you know what you're doing and have read the disclaimer above, you can
    remove the contacts and soak them in the hydrogen peroxide apparently. (I'm

    If the contacts are just a bit dull, you can use and out for
    debris left behind.

    What I'd like to know is how to neutralize the damage to not only prevent it
    from re-occuring but speading to other system components.

    I'll update this info. as more info. comes to hand. I've never tried any of
    the above and I'm sure there are many better qualified people to help.
    Hopefully we'll come into contact with one or some of them.
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