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Exploded NiCd Batteries

Discussion in 'Electronic Repair' started by [email protected], Jan 21, 2007.

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  1. Guest

    While attempting a home-charge of a set of NiCd batteries, they were
    left unattended and consequently exploded (relatively high current was
    flowing through them). The basement area in which the explosion took
    place is currently being ventilated overnight.

    Does anyone have any recommendations for further safety precautions or
    clean-up procedures?

    Thanks
     
  2. Eeyore

    Eeyore Guest

    You may find that info on a NiCd batery manufacturer's site.

    You could also check Wikipedia for the chemistry used in the battery.

    Graham
     
  3. Jim Land

    Jim Land Guest

    wrote in 51g2000cwl.googlegroups.com:
    The chemicals you're dealing with in a typical Ni-Cad battery are:

    Nickel & Nickel Hydroxide
    Cadmium & Cadmium Hydroxide
    Sodium Hydroxide
    Potassium Hydroxide
    Cobalt Hydroxide

    I would wear rubber gloves when cleaning this stuff up! Wipe down all
    surfaces and rinse with water. Dispose of all cleaning materials.
     
  4. Guest

    Guest Guest

    The potassium hydroxide (35%) is the worst component
    in NiCd batteries. Rinse splattered areas with as much
    water as you can.
     
  5. And, in times to come, it might be wise to follow the battery
    manufacturer's recommendations for charging procedures, especially the
    current level.

    If you're paranoid, you can rig a sort of "charging chamber" with
    some hollow-center cinder blocks. That will at least confine the damage
    if it happens again.

    I'm guessing no one was hurt.

    Keep the peace(es).
     
  6. Guest

    Thanks for the suggestions guys.

    I especially like the "follow manufacturers instructions" part.
    Just need to overcome my "reading inhibitions". :)ooo

    FWIW, this happened because I was doing a fast charge.
    I'm usually very careful to stop the process as soon as there
    is any heat.

    But this time I got called to dinner when I should have been
    watching the stew. Actually more like pop-corn!

    On a more serious note, I am reminded about how familiarity breeds
    contempt and can often lead to compromising safety.

    Anyway, cleaned up the mess. No real harm seems to have been
    done except I prolly blew up about $60.00 worth of nicad cells.


    DOC
    Have robots. Will travel. http://www.robot-one.ca
     
  7. I use a timer as a fail safe. Relatively cheap.
     
  8. Jim Land

    Jim Land Guest

    wrote in
    We're all SO glad you don't work in a mutions factory... :)
     
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