Some of the 'rapid chargers' sold to recharge
the batteries in (mainly) two-way radio equipment
seems to perform this function as well ... it's
probably just a result of the charge rate being
C/1 (versus the normal C/10) rate and not a
specific 'current pulse' as described below
that does the trick. I know the cells in the batt
pack for my 2M/70 cm transceiver are a lot
happier when occasionally zapped with the
rapid charger - I had to bring two cells in that
same pack 'back from the dead' using the
large cap method about 2 months ago and so
far they are looking good (the radio also has a
built-in DVM feature that reads the pack
voltage - easy to tell when a cell has 'shorted').

Jim



 > Dump a lot of current through the cell and fry the dendrites off.
> Monitor the problem cell with a volt meter.  Charge up a big
> cap (say 100,000 ufd) to 10, 15 or 20 volts. Using a low
> impedance delivery method, dump it into the cell
>

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