[NSRCA-discussion] lipo flight pack question

[Tim Taylor]

Egggzactly!!!!!!

"Courtney, Gary Ray" <grcourtney at tva.gov> wrote:      st1\:* {   BEHAVIOR: url(#default#ieooui)  }      @font-face {   font-family: Wingdings;  }  @page Section1 {size: 8.5in 11.0in; margin: 1.0in 1.25in 1.0in 1.25in; }  P.MsoNormal {   FONT-SIZE: 12pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Times New Roman"  }  LI.MsoNormal {   FONT-SIZE: 12pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Times New Roman"  }  DIV.MsoNormal {   FONT-SIZE: 12pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Times New Roman"  }  A:link {   COLOR: blue; TEXT-DECORATION: underline  }  SPAN.MsoHyperlink {   COLOR: blue; TEXT-DECORATION: underline  }  A:visited {   COLOR: purple; TEXT-DECORATION: underline  }  SPAN.MsoHyperlinkFollowed {   COLOR: purple; TEXT-DECORATION: underline  }  SPAN.EmailStyle17 {   COLOR: windowtext; FONT-FAMILY: Arial; mso-style-type: personal-compose  }  DIV.Section1 {   page: Section1  }      Is the replacement cost of a new reciever pack worth your aircraft? no  
   
  trash it and buy a new one
   
  gary
   
   
   
  

    
---------------------------------
  From: nsrca-discussion-bounces at lists.nsrca.org [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Eddie Batchelor
Sent: Wednesday, November 21, 2007 12:33 PM
To: 'NSRCA Mailing List'
Subject: [NSRCA-discussion] lipo flight pack question


  
    OK all you E guru’s. Please help me out here.
  I inadvertently left my switch on after flying last weekend. The flight pack with a 2s lipo and regulator sat on for 9 days and drained the lipo. When I checked the voltage on the 2s 850mah lipo it read under 2.6 volts and dropping under load. Without the load it rose to just above 3 volts. SO obviously I drained my 7.4v 2s pack quite dead/flat/ ka-put. L
   
  I tried to recharge it and none of the lipo chargers I have would even allow it to begin charging. Then thinking I had nothing to loose at this point I put it on my nicad charger for a few moments and got the voltage up some. ( Yes I know this normally is a NO-NO and I did it very cautiously, outside.) 
  Then the Accucyle Elite accepted it as a 2s pack and began charging. I eventually charged back over 900 mah into this pack rated as 850mah.
   
  I have not had time to cycle it yet but I will to see what capacity It can output & recharge.
   
  NOW , my question to the collective wisdom is.  Assuming the pack cycles within acceptable output IE (800mah or more), Do you think the pack is useable or should I just trash it. How much damage could have been done by slowly draining  the pack flat. I think it wouldn’t be as severe as draining a pack flat under load( in flight).
   
  I doubt I could ever feel comfortable flying my pattern plane with it, but would it be usable for sport flying.
   
  Just curious
   
  Thanks
  Eddie B

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

       
---------------------------------
Never miss a thing.   Make Yahoo your homepage.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.nsrca.org/pipermail/nsrca-discussion/attachments/20071121/b1e33b89/attachment.html