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Re: [EVDL] Press release on Firefly "Oasis" battery

They care alot as they get pinged with road fees as they enter a state for
the damage the weight causes to the roads. Note the scale as you cross state
lines. Also with a 1000 pound less weight they can take on another pallet
of goods to transport so their profits rise as the get paid by the poundage
at times if they are independent. So weight does matter. Thank goodness or
the battery may never get developed for EV's.

On 10/31/07, Dewey, Jody R ATC COMNAVAIRLANT, N422G5G <[email protected]>
wrote:
>
> The only question I have is why are the truckers using light weight
> anything? They could use those huge 400ah forklift batteries in series
> for a 24V system. Those batteries have huge cycle life and would work
> beautifully. Big Rigs don't really care about an extra 1000 pounds.
> They are rated to haul 400,000 plus. If it kept them from running it
> would definitely improve their gas mileage without affecting their
> driveability.
>
> -----Original Message-----
> From: [email protected] [mailto:[email protected]] On
> Behalf Of Danny Miller
> Sent: Tuesday, October 30, 2007 21:19
> To: Electric Vehicle Discussion List
> Subject: Re: [EVDL] Press release on Firefly "Oasis" battery
>
> Actually it's not that hard to beat.
> Without providing hard numbers, they're claiming that both a greater
> portion of the lead can be used, resulting in a greater power-to-weight
> ratio. Perhaps more significant is they're describing a lower Peukert
> exponent, so an EV could actually use much more of the amp-hrs
> available.
>
> Large lead acid strings have a much simpler charge management system
> than li-ion, and can tolerate overcharge, mechanical damage, or
> defective cells without bursting into flames.
>
> But I share your skepticism on these pre-release claims. Because I'm
> supposed to have my aluminum battery, my self-recharging Tilley Electric
> Vehicle, and my flying car by now.
>
> Danny
>
> Bill Dube
wrote:
>
> >I think it was the "Horizion" battery that used composite
> >(fiberglass?) grids. Similar concept. I rode in a very fast hybrid
> >HumVee that used them (with John Wayland, actually.)
> >
> > They had serious issues with cycle life. Could be this latest
> >spin on the old idea will have similar problems. Maybe not.
> >
> > Regardless, it will be tough to beat the Li-Ion specs with any
>
> >sort of lead-acid. 2.17 volts per cell versus 3.3 (or 3.8) volts per
> >cell is tough to overcome.
> >
> > Many folks on this list are quite jaded from seeing a
> >continuous parade of "pre-announced" technologies fail to work as
> >advertised. Many of us now have a "Show me" attitude after all these
> years.
> >
> > Bill Dube
> >
>
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