Quote:
Originally Posted by JKingGrim
You put in water, and get out water + energy? Unless there is some kind of nuclear reaction (which there isn't) it doesn't make sense. Has anyone found an explanation for how they work?
*edit* This is pretty much what I expected. The title to this article is misleading. Water is not fueling the phone. The enery is stored in the metal which eventually gets exhausted.
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Yes, you're right... that had to be the case. It takes significantly more energy to split the H2 from the O in water than you get back from the fuel cell. Unless we are to believe in perpetual motion or cold fusion, there must be an energy source to drive the process. Still, very clever to store the energy in that reactive metal. If it has a decent life span (a couple of years would be good), then it could be practical.