On (28 Aug 96) Roy J. Tellason wrote to Alec Cameron...
>> CONTINUED FROM PREVIOUS MESSAGE <<
On the home stretch.....
 AC> Gel battery makers [eg YUASA] may have it on the battery side. 
 AC> For Plante and Faure batteries, we were told 2.25 to 2.35 v/ 
 AC> cell. 
 RJ> That'd be 13.5 - 14.1 for a "12v" unit,  sounds like the upper end would
 RJ> be a little high...
 RJ> Yuasa I'm familiar with,  not those other names,  though.
Plante and Faure are generic words, for the two "traditional" cell designs
used in the pre- gel days.
Plante as I said earlier, last 20 to 30 years. We used to retire these when
the power plant [eg a steam power station] was closed down. I guess that to
then move them any distance, could be harmful.
The Plante cell has lead plates, grooved in a pattern but is not pasted with
active material. The lead itself, is converted by the passage of charging
current. Very durable but heavy and probably unsuited for mobile service. The
ones I dealt with were in Generating Station, HV Substation and Phone
Exchange service where the utmost reliability was required.
The Faure cell also has lead plates but these are very light and are
extensively slotted or cast into box compartments, and the active paste is
pressed into these cavities. Close fitting separators help to trap the paste
so it stays put. Cheap to make, these won the auto industry and the
development of Plante stopped. Faure batteries are cheaper than Plante, are
very high performers but the shorter life and diminished reliability, are
serious handicaps. Not approved by NASA!!
Both types Plante and Faure have differences between the lead/ lead alloy 
sed
for positive and negative plates. The plate alloy, and the amount of positive
vs amount of negative plates used, has a big effect on cell performance and
durability.
Oo la la! Guess where Mr Plante and Mr Faure lived. Pronounced PLANN- TAY and
FOR-AAY.
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 RJ> Sounds good to me.  I wish that I could find some inexpensive inverter
 RJ> hardware out there,  or perhaps a computer power supply which would have 
a
 RJ> 12 volt input,  with power for the monitor and modem available...    
It is a scandal, that today's PCs do not have an on- board rechargeable, to
give say 5 minutes shut down power in the event of AC failure. Another 
xample
of spoiling the good ship, for a ha'penny worth of tar!  Cheers....ALEC
... ........The best carpenters make the least chips
--- PPoint 1.92
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