Strange Battery Behavior

[Ted Sander]

And, if it's raining and you're bored.put the pack on discharge on your
cycler, and then use a volt meter to read the individual voltage of each
cell.  Bet you find one or two significantly lower than the others.  Cure is
the same - just replace the whole pack.

Ted

 

-----Original Message-----
From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org] On
Behalf Of randy10926 at comcast.net
Sent: Wednesday, October 13, 2004 1:19 PM
To: discussion at nsrca.org
Subject: Re: Strange Batery Behavior

 

Thanks for the replies - New batteries ordered.

 

And I will test out the switch and volt watch with other batteries I have on
hand.  Looks like the weather here will be rainy for a few days anyway.

 

Randy

 

-------------- Original message -------------- 

Sounds like a bad battery but the most significant revelation is that your
independent check lied to you. If you can attach a voltmeter while you have
it on the cycler you will probably see the voltage drop as soon as you apply
the discharge load. Once again, you can't tell the state of charge by
reading voltage. You need a charger that tells you how much it put in. You
also need to cycle it periodically to know that it is a good battery. 

Jim

----- Original Message ----- 

From: randy10926 at comcast.net 

To: nvrc <mailto:NVRC-List at yahoogroups.com>  club list ;
discussion at nsrca.org @nsrca. <mailto:discussion at nsrca.org%20 at nsrca.>  

Sent: Wednesday, October 13, 2004 7:51 AM

Subject: Strange Batery Behavior

 

I was out practicing this last Monday when I noticed the lights on my volt
watch doing what I thought was strange stuff. So I stopping flying and went
home.

 

I put the plane on the cycler and charged the Ni-cds on the cycler. Next
morning independent check showed the battery as full charged and no
flickering lights on the volt watch when I turned the plane on. So far - go
good, so I thought it might be good to cycle the batteries a couple of times
just to make sure things are working. When I push the dis-charge button the
plane immediately goes back to full charge. I cycled two other batteries to
check the cycler out and it seems to be working. So is the battery in the
Focus safe to use?

 

Randy Hatfield

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