[NSRCA-discussion] lipo flight pack question

[Steven Maxwell]

Good foamy pack.

Eddie Batchelor <perkinsrx at centurytel.net> wrote:        st1\:*{behavior:url(#default#ieooui) }                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

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