Charging concerns/questions with NMP Lithium Ion batteries

[JOddino]

I'm guessing that you don't really know if there is a bigger problem in the R/C industry vs. other applications.  There hasn't been in my neck of the woods.  There will be when we start powering our models with them, but I don't believe operating our R/C systems with Li-Ion poses a high risk.  
I do believe that the company that has given Lithiums a bad reputation is the one that added the charge circuitry in the packs and it was the implementation (not the concept) of that circuitry that caused the problems.  I assume it has been corrected.  I also believe that it takes some level of learning to avoid accidents but that is not unusual for modelers.  There are many dangers in our hobby.  So If someone doesn't feel up to the learning process, stick with what you know.
Jim  
  ----- Original Message ----- 
  From: Rcmaster199 at aol.com 
  To: discussion at nsrca.org 
  Sent: Sunday, May 09, 2004 7:37 PM
  Subject: Re: Charging concerns/questions with NMP Lithium Ion batteries


  I have tried to stay out of most of this discussion but something is gnawing at me. I have asked this question before, but don't believe I have gotten an answer. Maybe no one on the list knows 

  Since Li-ion and Li-poly technology is widely used in cameras and cell phones, and these are recharged all  the time (in the home and without special power supplies like separate 12 volt sources and such) with extremely safe circuitry, why is it that the folks who offer these same battery types to us, use charging circuitry that isn't so bullet proof???

  Certainly currents and voltages are different in some applications, but the chemistry is the same. And Lithium metal will burn with ferocious intensity whether 20 grams are exposed or 10 times that amount. The heat is enough to burn your plane or house either way.

  Matt K

    Subj:Re: Charging concerns/questions with NMP Lithium Ion batteries 
    Date:5/9/2004 12:33:04 PM Eastern Daylight Time
    From:kerlock at comcast.net
    Reply-to:discussion at nsrca.org
    To:discussion at nsrca.org
    Sent from the Internet 



    First off, I'm not looking for compassion. That was a simple explanation as
    to why a guy who is normally cheery, laughing and all smiles could go into a
    practically homicidal rage over a smart a* comment

    Secondly and most importantly, I'd like you to explain to me, with as much
    detail as you'd like, how my position is extreme in any way, shape or form.
    To me, an extreme position would be "ban lithium batteries". I have never
    said or proposed any such thing. I'd like to know how recommending caution
    and informing the uninformed could POSSIBLY be viewed as extreme. Or is
    anyone even bothering to read, or are they just glancing and knee jerking?

    And I don't need any type of apology, but thanks for the thought. I mean it.

    -Mike

    ----- Original Message ----- 
    From: "John Ferrell" <johnferrell at earthlink.net>
    To: <discussion at nsrca.org>
    Sent: Sunday, May 09, 2004 10:12 AM
    Subject: Re: Charging concerns/questions with NMP Lithium Ion batteries


    > We can always start over. I am sometimes guilty of "picking on" someone
    > because their reaction is extreme. I see now that I should investigate
    > conditions further to assure that what I intend as good natured joking is
    > not taken as insensitive and cruel. Fortunately, it was not I that was the
    > perpetrator this time, but it could have been.



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