Ions or Polymers for RX pack

[Ed Alt]

Perter:
I've used the Li-Ions in a couple of 2M ships, with great results.  This season I am trying some LiPoly's, really only because I couldn't find what I wanted at the WRAMS show this year.  There's some difference in the internal resistance and peak current capacity, but for our application, I don't think it will be at all noticeable.  One key thing is to make sure you protect it from vibration and any possibility of chafing against anything (always a good idea anyway).  Mine are flat packs, which supposedly have a more fragile joint at the solder tab into the cell structure.  So, strain relief on the wire is something I will pay extra special attention to because of that.  

Either way you go ought to be fine.

Ed
  ----- Original Message ----- 
  From: Peter Pennisi 
  To: discussion at nsrca.org 
  Sent: Saturday, April 09, 2005 12:46 PM
  Subject: Ions or Polymers for RX pack


  Hi all,

   

  I have decided to switch to this lithium battery technology for my F3A models mainly for increased flight time.

   

  My typical flying day consists of 6-8 flights. I run digitals all round and I am currently using a 1500 Mah NiCad pack.

   

  I want to avoid fast charging at some stage during my session.

   

  What is the recommendation between these 2 technologies? What is the more reliable of the two for this application? 

   

  Thanks

   

  Peter

   
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