Discharging a Li-ion camcorder Battery

Discussion in 'The Projects Forum' started by Matthew Phillips, Dec 22, 2013.

  1. Matthew Phillips

    Thread Starter New Member

    Dec 22, 2013
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    Hi guys, this is going to sound stupid but i have a 7.2v camera battery i would like to discharge before i dispose of it, now i don't have much in the way of equipment but i have a Analogue multimeter for testing the voltage. i have got these to discharge it: a 12v fan and a 12v car radio attached to it but it wont discharge even a little. Its been on for at least 30 minutes. Can someone recommend a faster discharge method. (THE METHODS MUST BE SAFE)
     
  2. Alec_t

    AAC Fanatic!

    Sep 17, 2013
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    Car headlight bulb? Electric kettle?
     
  3. bountyhunter

    Well-Known Member

    Sep 7, 2009
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    If it is a battery pack, there is control electronics inside to prevent you from discharging it too far because Li batteries can catch fire from that. The electronics open a FET switch when the battery voltage drops to a pre set point. You should never try to discharge an Li battery to zero.
     
  4. GopherT

    AAC Fanatic!

    Nov 23, 2012
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    The other option is to recycle it - Staples stores have recycle boxes if you are in the US.
     
  5. trader007

    Active Member

    Feb 27, 2010
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    not all battery packs have chips in them though..

    I would just recycle the battery pack. Well I mean I would put it on a grill and shoot it with a nailgun to watch the fireworks... but that's not safe.
     
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