This isn't the first we've seen of sugar powered gadgets. In fact, cars running on ethanol are kinda sugar powered. But microbial fuel cells are pretty awesome, and Sony is getting into the game with its new bio-battery.
The precise technology is a bit difficult to decipher, especially since I don't speak Japanese. But it looks like the batteries are producing about 50 mW per cell. As you can see from the picture, when linked together, it's enough to 100mg tramadol power a small MP3 player. Of course, the battery is many times the size of any device it would power. It's difficult for me to imagine, however, that it's ever going to be simpler or more efficient than turning sugar into electricity using the intermediary of my muscles. Crank powered gadgets just make more sense.
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