Ni-Cd restoration [RE-wrenches]

[info at backwoodssolar.com]

Nicad Dendrites can be knocked out by high charge current for one or two
brief pulses.  I use  a 12 volt source limited to 10 to 15 amps and about
1/2 second manual pulse to each cell separately. Take proper precautions of
goggles just in case one is ready to blow, but that has never happened to
me. One or two such DC zaps restores it to condition to accept a normal
charge, the charge having been effectively removed by the dendrites prior to
"treatment".  This is a funky temporary fix, but does work to varying
lengths of service, quite effective for at least one more job performance in
emergency.
Steve Willey, Backwoods Solar Electric Systems www.backwoodssolar.com
A catalog business on a mountain
2 miles from utility lines,
powered entirely by our catalog products.
IF UTILITY POWER IS 1/4 MILE OR MORE FROM YOUR SITE,
get our free 160 page solar-electric Planning Guide/Catalog.
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Phone(208)263-4290  Fax (208) 265-4788  in Idaho, USA


----- Original Message -----
From: Travis Creswell, Ozark Solar <ozsolar at ipa.net>
To: <RE-wrenches at topica.com>
Sent: Tuesday, March 27, 2001 5:52 AM
Subject: Re: Ni-Cd restoration [RE-wrenches]


> Hello Allan,
>
> No magic suggestion from me but I'll tell what I do with mine.  I take
them
> to my local "Battery Outfitters" or whatever your local battery dealer is
> called.  They take the case apart and put new cells in it.  Often they can
> even put larger capacity cells then what came with the battery when it was
> new.  Typcially it about 1/2 to 2/3  the price of buying a new one.
>
> Travis
> ----- Original Message -----
> From: "Allan Sindelar, Positive Energy, Inc." <allan at positivenergy.com>
> To: "New wrenches posting" <RE-wrenches at topica.com>
> Sent: Monday, March 26, 2001 11:19 PM
> Subject: Ni-Cd restoration [RE-wrenches]
>
>
> > Wrenches,
> > We use the 18V DeWalt cordless tools on our service truck, and we're
> > basically satisfied with their performance. One Ni-Cd battery has failed
> > after 3-4 years. Is there a nothing-to-lose "ZAP" procedure we can try,
> > rather than just tossing the battery into the hazardous-materials
> recycling
> > bin? Maybe it just needs its dendrites fried to perform again. What AC
or
> DC
> > voltage and current might restore performance? Thanks
> > Allan at PozEn
> >
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For info contact list moderator by email:
 michael.welch at homepower.com

____________________________________________________________
T O P I C A  -- Learn More. Surf Less. 
Newsletters, Tips and Discussions on Topics You Choose.
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