Tech details here:
http://www.millenniumcell.com/fw/main/Overview-27.html

On Jan 5, 2008 10:44 AM, John Bange <jbange@gmail.com> wrote:

> > 14-hour run time on one cartridge, fuel
> > cell technology (runs on water which is catalyzed into hydrogen which
> > powers a fuel cell).
>
>
> Actually, it's more likely a water-activated chemical hydrogen generating
> compound, similar to the Mg-Fe packs in military field rations' Flameless
> Ration Heaters <http://en.wikipedia.org/wiki/FRH>. The magnesium strips
> the
> oxygen off the water to make Mg(OH)2, leaving H2 .  I am curious what sort
> of reaction they use, but their literature is very light on technical
> detail. I wonder how much heat these generate as a byproduct. That might
> be
> useful in and of itself!
>
>