Clearly, it's been all about the urine this CES... Although thankfully, as demonstrated at the stand, you can also look to water, OJ, Coke, beer, coffee and other liquids to power this battery, not just resort to bodily fluids.
The batteries, by Japanese firm Aqua Power, rely on using liquid as a catalyst to generate a reaction between magnesium and aluminium inside the battery. The name stands for Non Pollution Power, and in fact there are other reasons why these batteries are eco-friendly: no mercury, no lead, no cadmium and they're non-combustible, so can be chucked safely.
Aqua Power System (Japanese)
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