Lithium or Not ?

[Richard Hallett]

Can the same be said for the even smaller lithium poly?

Rick
  ----- Original Message ----- 
  From: JOddino 
  To: discussion at nsrca.org 
  Sent: Sunday, August 31, 2003 1:59 PM
  Subject: Re: Lithium or Not ?


  Lithium Yes
  1) A system with a regulator is better.
  2) Li-Ion allows you to get better regulation at higher voltage.
  3) Li-Ion has lower self-discharge.  Charge on Thursday, fly on Saturday or the following Saturday.
  4) Charging is less complicated, not temperature sensitive and quite fast with cheap charger.  You can charge at the field if you need to.  The further the pack is discharged the faster it charges.  One hour assures you it is half full.
  5) Easier to predict remaining charge.  Therefore you can use more of the charge before recharging.
  6) Less maintainence.  No cycling, formatting, etc.
  7) Cells are better matched.  Bettor for paralleling.
  8) With the right system design switch, connector and cable drop is not a concern.
  There is probably more but I need to go to work.
  Jim

  ----- Original Message ----- 
    From: Bob Pastorello 
    To: NSRCA 
    Sent: Sunday, August 31, 2003 7:29 AM
    Subject: Lithium or Not ?


    I'm finding most 2 cell, 1600+ mah Lithiums to be weighing around 2.5 oz or so....plus a regulator (required), another .6, total of 3.1 oz.  And NO fast field charging.  And special charger.

    NiMh 5 cell pack, 1800mah, same reg reqd., about 5.8....

    Besides saving the 2.7 ounces (in my application), what are the REAL *other* advantages of going Lithium ?

    Bob Pastorello, Oklahoma
    NSRCA 199, AMA 46373
    rcaerobob at cox.net
    www.rcaerobats.net

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