Subj : Re: Charger
To   : TOM WALKER
From : WAYNE CHIRNSIDE
Date : Sat Jun 11 2005 06:16 pm

-> WC>When I make a cell "pack" I always make individual cells
-> WC>accessable for individual charging.

-> WC>When charging in series a single cell with greater internal resistance
-> WC>gets less of a recharge and with each successive charge less and less
-> WC>until it fails.

-> WC>Charging each cell individually avoids this.

->  Actualy Cell matching is a better Idea. Run each indicidual cell
->  theorgh several Charge adn Discharge cucles and them seperate them into
->  as closly Matched capacities as possable.

I do that as well.
Sometimes they can even be brought close together with
the "zapper" I built, 60k uF 75 volt capacitor charged through
a current limiting resistor it could clear internal shorts.
Charged to around 50 volts per zap.

-> Whne I worked at the VA Medical Center they Griped at the prices paid
-> for the Battery packs used i nthe Super Critical Life Saving equipment.
-> BUT that wasx becaeu we paid MORE for an Extra Selective Cell matched
-> Battery pack.

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