[NSRCA-discussion] Li-Mn Batteries

[Anthony Romano]

Hi Wayne,
 Never touched a LiMn cell but have about 70 flights on some A123's in a Vanquish. LiFe are much more durable than Lipo but are lower voltage and a bit heavier. Most of this is due to the Al case vs the poly bags used with other chemistries. LiFe are also chemically more stable and durable with the ability to be discharged at 30C and charged at 5C. They have a very flat discharge curve and can be drawn completely flat with no damage to the cells for more than 300 cycles.

http://www.a123racing.com


http://www.flyinggiants.com/forums/fg28/17411-a123-batteries-dummies.html



 Still in their infancy and need more capacity and less weight. Requires a lot of DIY but great to have more options on the horizon. Learned lot about these on RCgroups and Flying Giants but they still need some more development. Currently they are primarily being used in Dewalt  and B&D cordless tools and the big hope for the E autos of the future.

Anthony


From: wgalligan at att.net
To: nsrca-discussion at lists.nsrca.org
Date: Sun, 23 Mar 2008 10:05:27 -0400
Subject: Re: [NSRCA-discussion] Li-Mn Batteries










Anthony,
 
What's the diff between Mn  and  Fe type 
cells?
 
Wayne

  ----- Original Message ----- 
  From: 
  Anthony 
  Romano 
  To: NSRCA Mailing List 
  Sent: Sunday, March 23, 2008 9:46 
AM
  Subject: Re: [NSRCA-discussion] Li-Mn 
  Batteries
  

  Just to clarify those cells are A123 Li Fe not 
  Li Mn.




  
  > From: wgalligan at att.net
> 
  To: nsrca-discussion at lists.nsrca.org
> 
  Date: Sat, 22 Mar 2008 23:34:29 -0500
> Subject: Re: [NSRCA-discussion] 
  Li-Mn Batteries
> 
> Joe,
> 
> Check Bob Pastorello's 
  web page. www.rcaerobats.net He has 
  done some 
> extensive testing on these and is having good success with 
  them running one 
> pack for receiver and ignition on his gassers. He is 
  running the Spectrum 
> radio so there has not been much of an issue 
  with interference. He is 
> running a 2 cell 2300 mil pack on the 50cc 
  gas stuff. Like Matt said, 
> sounds like great stuff and no fire issues 
  with these batts. They are 
> slightly heavier then LiPo's but still 
  lighter then NiMh. Bob also claims a 
> very flat discharge rate at 
  about 6.5 v therefore he is not even using a 
> regulator.
> They 
  can be quick charged in about 30 min or less with no issues of igniting 
  
> like LiPo's or Li-Ion. I am considering switching over to these when 
  my 
> NiMh give out. You can buy the cells at Homie Depot in 2cell packs 
  or 
> disassemble the larger packs used in drills and make useable packs 
  out of 
> them. Visit the different links Bob has posted for more info. 
  Good stuff.
> 
> Wayne Galligan
> 
> 
> ----- 
  Original Message ----- 
> From: "Joe Dunnaway" 
  <dunnaway at hbcomm.net>
> To: "NSRCA" 
  <nsrca-discussion at lists.nsrca.org>
> Sent: Saturday, March 22, 
  2008 6:40 PM
> Subject: [NSRCA-discussion] Li-Mn Batteries
> 
  
> 
> > I'm thinking about changing from NiMh batteries to 
  Li-poly for my
> > receiver packs. I've found some references to 
  Li-Mn batteries. Have
> > any of you guys had any experience with 
  these? It looks like you don't
> > have to worry about the battery 
  pack catching fire or exploding.
> >
> > 
  http://www.pfmdistribution.com/
> >
> >
> >
> 
  > Joe Dunnaway
> >
> > 
  _______________________________________________
> > NSRCA-discussion 
  mailing list
> > NSRCA-discussion at lists.nsrca.org
> > 
  http://lists.nsrca.org/mailman/listinfo/nsrca-discussion 
> 
> 
  _______________________________________________
> NSRCA-discussion 
  mailing list
> NSRCA-discussion at lists.nsrca.org
> 
  http://lists.nsrca.org/mailman/listinfo/nsrca-discussion


  
  Watch “Cause Effect,” a show about real people making a real difference. Learn more. 
  
  

  _______________________________________________
NSRCA-discussion 
  mailing 
  list
NSRCA-discussion at lists.nsrca.org
http://lists.nsrca.org/mailman/listinfo/nsrca-discussion

_________________________________________________________________
How well do you know your celebrity gossip?
http://originals.msn.com/thebigdebate?ocid=T002MSN03N0707A
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.nsrca.org/pipermail/nsrca-discussion/attachments/20080323/d8d8a44e/attachment.html