[NSRCA-discussion] Lithium Ion batteries

[Fred Huber]

The instructions and safety precautions are needed.

If you follow the safety precautions, your chance of haing a LiPo burn is low.  If you don't follow the safety precautions you might as well light a match.

The average cell phone has a LiPo in it.  The phine has safety circuitry to prevent overcharge and overdischarge.  The rate of charge is controlled and the rate of discharge is relatively slow.  Even with that, people have managed to make cell phones burn.

We put more "stresses" on a LiPo when we use it in a model aircraft than what you put on a LiPo in the average cell phone and we don't have the safety circuitry to prevent overgharging permanently attached to every battery.  We don't want the weight or cost of that circuitry to be permanently attached to each pack either.

So... we have to read the instructions, make sure the chargers are set correctly and monitor the battery charging.

  ----- Original Message ----- 
  From: vicenterc at comcast.net 
  To: NSRCA Mailing List ; NSRCA Mailing List 
  Sent: Thursday, November 30, 2006 9:20 AM
  Subject: Re: [NSRCA-discussion] Lithium Ion batteries


  Here are the safety instructions for TP batteries web site: 

  http://www.thunderpower-batteries.com/images/THPSafetyWarnings.pdf

  I could not find the safety instructions on the Duralite web site.  

  Here the safety instructions from Fromeco web site:

  http://www.fromeco.org/shop/ainstructions%20batteries.htm

  The problem I have is that I don't have time to baby sit while the battery are charging.  I try to do it with my small electric planes and I can not imagine babysitting all my planes while charging.  Probably this is the only issue I have in regard lithium batteries.  Do we really need to follow this instructions?  If not, the manufactures will need to take the risk and take those instructions out from the web sites.

  Vicente "Vince" Bortone



    -------------- Original message -------------- 
    From: "Pete Cosky" <pcosky at comcast.net> 

    I had bought a few NMP 2400 mAh packs from Central last year. I don't see them on their website now though.

    I am apprehensive to go Li-Poly due to the packaging and possibility of damage and fire. The Li-Ion is in a metal can that can shield it from physical damage. Using the wrong charger on the other hand would still be an issue. 

    The Li-Ion packs are lighter than a NiCad or Ni-Mh packs so you gain a weight savings and they need less maintenance than the aforementioned battery types. 

    I even made a pack to replace the Ni-Mh pack in my Multiplex EVO and it is holding up well.

    As always this is nothing more than the ramblings of a longhaired freak.....

    Robert & Casey Green <robcase1 at cox.net> wrote:
          Hey Guys, I am thiking about running lithium-ions batteries this year.  Besides duralite, is there anything else worth using.

          Thanks in advance.

          Robert
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