More like 10-15 Kg. lanthanum:
A sealed <http://en.wikipedia.org/wiki/Seal_%28mechanical%29> 38-module nickel
metal hydride <http://en.wikipedia.org/wiki/Nickel_metal_hydride> (NiMH)
battery <http://en.wikipedia.org/wiki/Rechargeable_battery> pack providing
273.6 volts, 6.5 A·h capacity and weighing 53.3 kg (118
lb)[70]<http://en.wikipedia.org/wiki/Prius#cite_note-cgcc-69>is
supplied by Japan's Panasonic
EV Energy Co <http://en.wikipedia.org/wiki/Panasonic_EV_Energy_Co>. They are
normally charged to 40–60% of maximum capacity to prolong battery life as
well as provide a reserve for regenerative braking. Each battery pack uses
10–15 kg (22–33 lb) of lanthanum <http://en.wikipedia.org/wiki/Lanthanum>.
As each electric motor in Prius also contains 1 kg (2 lb) of
neodymium<http://en.wikipedia.org/wiki/Neodymium>,
the car is described as "the biggest user of rare earths of any object in
the world".[71] <http://en.wikipedia.org/wiki/Prius#cite_note-70>, although
neodymium is no rarer than copper or nickel.
Charlie
On Mon, Jul 25, 2011 at 10:15 AM, Sawyer, Edward <Ed.Sawyer@xxxxxxx> wrote:
> Wikipedia - Toyota Prius: Each battery pack uses 1015 kg (2233 lb) of
> lanthanum. As each electric motor in Prius also contains 1 kg (2 lb) of
> neodymium.
>
> I wouldn't call 3000lbs a low curb weight. 2000lbs, yes, but cars of that
> lightness are not common nowadays, unfortunately. The 80s and early 90s
> were
> a great time for lightweight cars.
>
>
>
> > There are a bunch of urban myths about the rare earth elements in a
> > Prius and other nonsense. Other things the anti crowd crow about is
> > the excess weight of the battery pack, which is about the same as one
> > of my teenage daughters. Never mind the weight of fuel in a larger gas
> > tank of normal vehicles.
>
> >The Prius curb weight is still quite low, as
>
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