More info here:
http://www.millenniumcell.com/fw/main/Emergency_Power-173.html
Spec says 25 watt output

On Jan 5, 2008 9:43 AM, Michael Elliott <camping.elliott@gmail.com> wrote:

> For those of us who like our electrical gadgets and refuse to camp in
> places with hookups  .....
>
> But it looks like a third option may shortly be available: the HydroPak
> Fuel Cell is debuting at the 2008 Consumer Electronics Show in Las Vegas.
> Dead quiet, decent power (400W), 14-hour run time on one cartridge, fuel
> cell technology (runs on water which is catalyzed into hydrogen which
> powers a fuel cell). 115VAC and 5VDC (USB) outputs, no emissions.
>
> $20 per cartridge, $400 for the unit.
>
> http://gizmodo.com/340275/hydropak-fuel-cell-to-debut-at-ces-2008
>
>