Pee-powered batteries

The trouble with rechargeable batteries is that there never seems to be a power socket in sight when you want to charge them up. Thankfully, one manufacturer has developed a battery that should be slightly easier to recharge, thanks to its ability to run off a variety of liquids, including water and urine.
Dubbed NoPoPo, the battery has been developed by the Japanese company Aqua Power System and comes in standard AA and AAA formats. Although, larger capacities for use as auxiliary power supplies have been rumored.
It’s also rumored the batteries retain their charge for up to 10 years, but they can be recharged only a limited number of times. It’s also thought they could be slightly less harmful for the environment than existing battery compounds, because they can run off more, ahem, natural substances.
Unfortunately, the NoPoPo batteries are on sale only in Japan.
more info HERE