On Wed, 29 Sep 2004 13:08:14 -0400, the renowned "Mitch Berkson"
If it fits within the same package size and does not require anything
to be added, that's very impressive (and very salable). A laptop
typically runs out of 'steam' after a few hours. Not very nice when
you have 20+ continous hours in airplane seats ahead of you..
"it's the network..." "The Journey is the reward"
firstname.lastname@example.org Info for manufacturers: http://www.trexon.com
> nice when you have 20+ continous hours in airplane seats ahead of you.
Whereas the Casio prototype probably continues to emit sufficient
steam to prevent you taking it on an airplane at all, not to mention
the likely restrictions on taking a flask of methanol on board. :-)
Well, it's running longer than any common battery I know of. And what is
the fuel ... water. How long will your robot run for running on common
batteries? That's always a subject that always comes up here, what is the
best battery to use... ummm you mean you want your robot to run for a long
time and ni-cads run for a few hours.
just a stupid thought on my part I guess.
If it's in the same space as the previous battery, I agree that's
impressive. Are you sure the fuel is water - that would be even more
impressive. On the other hand, if it could be refilled with vodka, that
would also be useful on a plane.
The most popular fuel cell developments for laptops and cellphones is
methanol/water, but water itself, as has been mentioned, will positively not
work as a fuel- it's an ash from the combustion of a fuel.
Sir Charles W. Shults III, K. B. B.
Umm, you can't use water as fuel - that's the old perpetual motion trap.
Well, unless you've got some kind of nuclear fuel cell ;-)
On the subject of batteries, how big or powerful do they make Lithium-Ion
batteries these days? I know a Li-Ion pack large enough to run a beefy
robot, if it even existed, would be cost prohibitive to anyone without a
serious research budget behind them, I'm just curious as to how much the
technology has advanced. I do know that the ones that exist are just about
the kings of all rechargable batteries at the moment - I got one for my
remote control blimp the other day that could source up to 1.5 amp, store
about 2.7 watt hours of energy, and weighed only 17 grammes, which was quite
impressive, especially the energy to mass ratio.
Yes it's been done a few times. The only example I can find a URL for at
the moment is the Mendocino High School Science Club fuel cell robot
which used a hydrogen fuel cell:
There have been a number robot-related fuel cell stories on robots.net
so you might try a search there for "fuel cell" to find a few other
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