[NSRCA-discussion] Fwd: New fast charge battery

Fri Mar 20 08:11:29 AKDT 2009

It must take an awful lot of current !  I charged a pak once at 5C and when the charger indicated "Charge Done" the pak was like an Ice cube. There is even a battery vendor now that is recommending  5C charge rates.
Take an old pak and experiment and see how far you need to go to generate excessive heat. I don't know if it's going to happen?

G.

  ----- Original Message ----- 
  From: James Oddino 
  To: General pattern discussion 
  Sent: Friday, March 20, 2009 1:00 AM
  Subject: Re: [NSRCA-discussion] Fwd: New fast charge battery

  I don't know for sure but I would guess it depends on how much heat is generated.  With lower internal resistance it could be a push (10C on the new batteries might be equivalent to 1C on our present state of the art packs).

  Jim

  On Mar 19, 2009, at 6:54 PM, Dave wrote:

    The faster you charge, the fewer the cycles you get!!  Figure cycle life is reduced by about 50% at 3C charge rates.

    Regards,

    Dave

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    From: nsrca-discussion-bounces at lists.nsrca.org [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Stuart Chale
    Sent: Thursday, March 19, 2009 6:48 PM
    To: General pattern discussion
    Subject: Re: [NSRCA-discussion] Fwd: New fast charge battery

    The key in my mind as we already have enough power in a makable weight for a new set of batteries, is the number of cycles you can get.  It the new technology gets us 200 cycles before degradation then I'll take 2 :)  Don't need three any more because they charge faster.
    Stuart

    Ed Alt wrote: 

    This is very straightforward.  The ideal battery is one that has 0 ohms internal resistance and infinite current delivery capability.  This new technology gets you somewhat closer to that ideal.  All it means is that it minimizes power losses due to much lower internal resistance, and reduces limitations that are placed on the performance of the thing you are powering with it.  Even the ideal battery can only deliver as much current into the load as that device will draw based on its own resistance (actually impedance, but we'll keep it simple) Doesn't matter whether it is a motor, a light bulb or whatever.  It's all good...

    Ed

      ----- Original Message ----- 

      From: Keith Hoard 

      To: General pattern discussion 

      Sent: Thursday, March 19, 2009 5:15 PM

      Subject: Re: [NSRCA-discussion] Fwd: New fast charge battery

      How good would these batteries work in my glow starter?. . .

      2009/3/19 Ed Alt <ed_alt at hotmail.com>

      No way! That is simply evidence that your paint needs to be upgraded!

        ----- Original Message ----- 

        From: Rex 

        To: NSRCA-discussion 

        Sent: Thursday, March 19, 2009 4:33 PM

        Subject: Re: [NSRCA-discussion] Fwd: New fast charge battery

        Now I'm just guessing here....  I'm thinking that if you throttle up and the paint
        strips off the fuse, that's probably a bit too much!

        Rex

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        From: joddino at socal.rr.com
        To: nsrca-discussion at lists.nsrca.org
        Date: Thu, 19 Mar 2009 14:10:06 -0700
        Subject: Re: [NSRCA-discussion] Fwd: New fast charge battery

        I used to say that an engine is a machine that doesn't make enough power.  Now I say a motor is also a machine that doesn't make enough power.   

        Jim

        On Mar 19, 2009, at 8:29 AM, J N Hiller wrote:

          Hay Rex how much power do you need? You can do a vertical ROG now.

          Jim

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      -- 

      Keith Hoard
      Collierville, TN
      khoard at gmail.com

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