In article .com,
Larry Bud wrote:

I've taken 1.5v batteries, and held a 12V charger on them for a second
or two at a time (The battery will get warm). From what I understand,
this will "burn" away the crystal inside, and will erase the "memory"

I do something similar, but use a variable power supply with an internal
current overload protection of 6 amps. I put it at 14V, and hold the
terminals on the battery for about 10 seconds.

You will need to take apart your drill battery to access the individual
cells -- don't try this on the entire battery pack, as it won't work.

It seems to revive the batteries so that they last for another 6 months
or so.

It may be easier to just go to a battery rebuild place -- the last time
I tried this on one of my newer Maktia 9.6V NiCads, I had a heck of a
time cutting open the battery case....

Regards,

-Steve in Banks, OR
http://woodworking.bigelowsite.com