Other may POST about the voltage numbers, but have done a lot 
of charging (since I have six chargers).

David please (re-) state what charger you are using.

Yes, when I smell the slightest amount of sulfur, I shut 
down the charging. A good charging cycle on healthy batteries
should not smell. But a good charging cycle on tired 
batteries, will.

I have found a manual (bay boy, variac), light dimmer (K&W 
BC-20, Russco), Zivan chargers is not set correctly can be
rough on batteries, over charging them, using too much 
water, etc.

But once I set the PFC-20 to the pack voltage (in my case,
I set my 132V pack to finish at 164V), I didn't have any
smell or issues. It was like the TV-infomercial
'Set-it, and forget-it'.

But this brings up a point that occasionally happens that
others may want to share their views on.

Sometimes the performance of a pack vary. Not much, 
but you can feel it. You can have good days, where the 
pack is performing well, and other days, when things 
seem to have a little less umooph (performance). I know
that wording is hard for the techies to get their 
measurements and calculations around, but 
seat-of-the-pants observations rarely are.

I attibute these variances to the various variables:

-how well the electrolyte is mixed,
-if the pack is balanced,
-the temperature of the pack,
-some batteries in the pack perform differently
 (non uniform manufacturing or flaws)

Of the later, you can see some of that when you do your 
monthly watering. Some cells will use more distilled 
water than others.

So far, with a new US145 pack and charging with a PFC-20,
the slow smooth finishing charge has given me more 
uniformity in performance.

Recently, when I turned my loaner PFC-20 charger back 
into manzanitamicro for the PFC-50 I ordered, I was using
one of my 120VAC Zivan K2 chargers (the older 1kw K2 is 
shaped like a brick and has less output than a 120VAC NG3).
I feel the difference between charging with the PFC-20
and other chargers by the pack's performance.

Watt do you think?



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. http://geocities.com/brucedp
. EV List Editor & RE newswires
. http://egroups.com/group/evangel
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