>I believe there is some sort of contract, patent, or combination of
>both, possibly from GM, that requires hybrids to only use NiMH.
>
It is the opposite. Since the success of GM's EV-1 [see video "Who
Killed the Electric Car"] Chevron acquired Ovonics from GM, and via
its morphing proxies Cobasys and now "Ovonics reborn"(?) has acquired
125 patents for metal hydrides and simply won't let ANYBODY, ANYWHERE
build big flooded NiMH batteries.
The writing is on the wall: try to make them and you'll get a "stop
work" injunction and be tied up in court until bankruptcy. Whether or
not any of the patents were violated. No sane investor would touch
that. (And I'll bet almost none of the 125 inventors got much of
anything, since their inventions have gone to waste as usual.) No
wonder China "doesn't honor" [technology murder by] US patents.
That's the main reason lead-acid isn't EXTINCT, because as Kirk
surmises the prices would be economical - only somewhat more, and the
batteries far superior and way longer lasting.
That's also why the NiMH D cells have been so well developed and have
amazing specs, and are being used as hybrid batteries. But they cost
double(?) what big flooded cells would.
And it's also the main reason there are big lithium batteries. These
snuck past while they were busy supressing NiMH because they were so
high priced and so 'touchy' in operation that the gangster owners of
"big oil" thought no one would use them.
And it was my original impetus to try, first 'simply' to make NiMH's
(Jan.2008), and then as I learned more, to create a new higher energy
economical battery chemistry.
Craig
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