[NSRCA-discussion] Battery going bad?

[Bob Kane]

I had something happen Saturday that is new for me . . . .   I was going to put up a flight with my 62" Osiris for a club airshow, I advanced the throttle to take off, the plane accelerated, then the motor quit.  The Castle Controller was emitting two beeps, indicating a low voltage error.  One of the club members had a meter that measures individual cell voltages and everything looked OK.  I used another pack to put up a flight with no issues.

When I got home I discharged the suspect pack and recharged it.  I flew it yesterday and it seemed to work OK.  I was practicing(!) some maneuvers repeatedly and the pack quit unexpectedly again, but it may have been my fault for not paying attention to the flight time.

Is this a sign of pending failure?  The pack has maybe 30 cycles on it.  I have had other packs get puffy and weak but this pack is rock solid.   The pack is a Rhino 5S 5000mAH 25C pack.
 
Bob Kane
getterflash at yahoo.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.nsrca.org/pipermail/nsrca-discussion/attachments/20120917/3b9a4c72/attachment.html>