->  TW>  There is a very expensive Gell CEll battery that is sold for use
->  TW> in Vehicles.                    
->  TW>  I suspect they will not work out. Gell Call batteries are Heat
->  TW> Sensitive and dry out easily at high temperatures. And there is
->  TW> Nothing Cool about the Underhood Temperatures of the Modern Car.

-> And it's getting worse.  The changes in body styles in recent years to enhance
-> aerodynamic qualities has let to much more stuff being crammed into a much
-> tighter space,  and temperatures jumping from what they used to be.

-> I know the unit you're talking about,  a molded plastic package with six
-> cylindrical cells in it.
-> Supposedly used in "race cars",  though what type isn't specified.

 Yes, That is the One. As far as Race Car endorselemt tht dosne't mean
much as they are PAID to have trhe name on their Car. And since they get
the Batteries FREE they don't care how many races they last!!
An Amusing Story. My neighbor used to be a Professional Jet Ski racer.
One time SplitFire spark plugs connened him in using them. They have a
smooth porcelin Insulator instead of the ribbed ones most plugs have.
Well a Jet Ski engine is a real shaker and of course in the wakes it is
quite rough and there is a lot of hard movement. He was fighting to
become #1 not only in that race but for the season. 
Well Guess What. One of the plug wire boots slipped off form all the
vibration. Something that almost never happens, And he limped in in Last
place.
Needless to say He told they where they could put their Plugs. 
I undersatand they are not all that great of a spark plus either becasue
I hear they refered top as SH** Fires quite regulalry.  :-)  :-)
I was a dedicated NGK man in my auto Repair days. Did 99% of my own for
over 45 years. 
--- Platinum Xpress/Win/WINServer v3.0pr5