[NSRCA-discussion] How bad is it?

[John Konneker]

Thanks Mark and everyone!
I decided to replace the two packs.
Like someone has already said...it's much cheaper than a new plane and besides...
M2 would never forgive me if I put the Sickle in because of the packs.
I went down to the hobby shop in North Canton.
Man!
What a nice place!
8 miles from the house and the best stocked shop I've ever been in.
Came home with two new 480mah 2s Pro Lite V2's.
I'll try to go out again tomorrow.
Thanks again everyone!
JLK

From: atwoodm at paragon-inc.com
To: nsrca-discussion at lists.nsrca.org
Date: Fri, 20 Aug 2010 11:44:43 -0400
Subject: Re: [NSRCA-discussion] How bad is it?
















Were they Zero on the Cellpro “Fuel” scale, or Zero Voltage?  If
the latter, then I’d say they’re toast.   If they just read Zero on the
Cellpro, (it reads 0 fuel when the cell voltage is at 3.0 or below I believe)
and there is still some voltage you can probably recover them.  

 



Mark
Atwood

Paragon
Consulting, Inc.  |  President

5885 Landerbrook Drive
Suite 130, Cleveland Ohio, 44124 

Phone:
440.684.3101 x102  |  Fax: 440.684.3102

mark.atwood at paragon-inc.com
 |  www.paragon-inc.com



 





From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of John
Gayer

Sent: Friday, August 20, 2010 9:49 AM

To: General pattern discussion

Subject: Re: [NSRCA-discussion] How bad is it?





 

John



If they are truly at zero your Cellpro should refuse to charge them.You can
probably recover the packs by putting them on a wall-wart for 15 minutes to
bring them up from zero and then put them back on the Cellpro. Of course you
want to do this outside on a concrete slab with no flammables in sight.

I've done this with 2s and 3s packs for small electrics. I have also done it
for the redundant packs of a pattern airplane but afterwards I always matched
up a recovered pack with a  fresh pack. So far I have had zero problems
with the recovered packs for either reliability or capacity.

I also use Ed's system with two switches and use them to ensure that both packs
are functional for each flight. Also I always remove the packs from the
airplane after the flying session as part of the teardown process. You are
going to remove them for charging anyway so remove them at the field and avoid
the possibility of hitting a switch while putting the plane in the car.



John



On 8/20/2010 6:18 AM, Stuart Chale wrote: 

You can try to charge them and see if they come back up to
voltage.  Then watch them carefully.  I think most of us would
recommend just tossing them and buying 2 new ones.  How much is 2 2 cell
480 mah packs compared to the cost of a new airplane?

Stuart C.



On 8/20/2010 8:11 AM, John Konneker wrote: 

As some of you know we recently moved.

I knew it was coming back in the Spring and haven't flown since April.

I decided to go out and make a couple flights this morning so last evening

I checked everything out and charged my motor batteries.

Thing is I forgot to turn my Rx off and drained both my 2s 480mah LiPo packs.

I fly Ed Alt's redundant regulator system.

I'm now charging them on my CellPro 4s charger.

They showed fuel level 0% when I started.

What should I do?

Junk both packs?

Thanks!

JLK





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