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Date: | Sat, 23 Jan 2010 19:48:36 -0800 |
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Well, this is the way I use to do it and I got the info from a ham
friend years ago. Put a load on the pack and put it in the frig over
night and let it run completely down that way. The cold does something
to the chemistry. When you take it out, remove the load and
immediately put on the charger. If the cells are shorted, you hit them
with very current from a power supply that won't current limit or I've
even used a car battery. Make sure the polarity is right and hit it for
just a fraction of a second. This will often remove the tiny shorts
that develop internally. Once you do this, put it on the charger, put
on a load to discharge it and treat as above. I've found that often
the shorts return. Another thing worth noting is that although nickel
hydrides don't have the memory problem nicads do, they can short the
same way internally.
73
Butch Bussen
wa0vjr
open Node 3148
Las Vegas
On Sat, 23 Jan 2010, Colin McDonald wrote:
> does anyone have any effective methods of reconditioning a Ni-Cad battery
> pack?
> I've got a 4.8VDC pack made up of four AA Ni-Cad cells for a scanner, and I
> want to recondition it.
> It's only $15 for a new one, but I want to try and restore this one first
> since I've heard there is some success when reconditioning Ni-Cad cells.
>
> 73
> Colin, V A6BKX
>
>
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