via Yahoo:

Toshiba has introduced a prototype fuel cell designed to power portable computers by eliminating dependence on rechargeable batteries. The innovative, small form-factor energy cartridge eventually could be used on handhelds, such as PDAs and mobile phones, as the Japanese electronics giant shrinks it even further.

In its current configuration, the direct methanol fuel cell (DMFC) delivers from 12 to 20 watts of power and provides up to five hours of notebook PC operation with a single cartridge of fuel. Commercial availability is slated for next year.

Let's see, instead of a 2-4 hour battery that I can re-charge, I have a 5 hour methanol fuel cell that I will likely have to buy a new one of when it's empty. What am I not getting here?