[NSRCA-discussion] Battery going bad?

[Chris]

Bob,

I would look at the LVC setting on the ESC and the sensitivity value (if 
it's a Castle). If the setting is sensitive it will cut out if it sees a 
momentary touch of the LVC value where insensitive will need to see a 
sustained drop in voltage.  What are the IR numbers on the pack, a 25C 
pack should be in the 2.5-5.0 range normally and about 7 is probably 
getting weak and worn out. On top of this a cold battery will drop very 
voltage quickly under load.

A Castle engineer told me we should run these settings:
LVC 3.0v
Soft cutoff
Insensitive

Chris

On 9/17/2012 4:32 PM, Bob Kane wrote:
> 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
>
>
> _______________________________________________
> NSRCA-discussion mailing list
> NSRCA-discussion at lists.nsrca.org
> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.nsrca.org/pipermail/nsrca-discussion/attachments/20120917/1d561fd3/attachment.html>