"An alternative to zapping is that you can apply
     a high (eg 15V) voltage to the cell while
     keeping a very close eye on a voltmeter."

Given Ohms Law - I think you can count on quite a
bit of something called 'current' to flow -

- this isn't like trying to charge a dead, stone
cold Lead-Acid cell ...

I'm not going to recommend nor try this approach.

Jim


----- Original Message -----
From: "Jinx" <joecolquitt@CLEAR.NET.NZ>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Saturday, June 01, 2002 5:19 PM
Subject: Re: [EE]: Laptop battery fading


> > I also immediately apply nominal charging current
> > right after the zap - usually by using a suitable
> > current limiting resistor in series with the 20 V
> > charging supply. This resistor also serves to
> > limit the charging current of the cap when the
> > 20 V supply is turned-up.
>
> An alternative to zapping is that you can apply a high
> (eg 15V) voltage to the cell while keeping a very close
> eye on a voltmeter. The cell will sit there for a short while,
> perhaps a few seconds, perhaps a minute, soaking it up
> until the voltage across it will rise suddenly. That's a good
> time to take the 15V away very quickly;-)  Hopefully the
> cell should take a normal charge after that. If this technique
> doesn't work, zap it
>

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