The whole world is going towards green technology direction. Everything you want to do now requires the thought of environmental sustainability. NoPoPo is an abbreviation for No Pollution Power. NoPoPo Battery can be charged and powered with almost any liquid. You name it, from rain water to beer to sake to cola to soda to human urine. All you need to do is suck up the liquid of choice up with the syringe, then squeeze the liquid into the battery to charge the NoPoPo Eco Water-powered AA Battery. The hydro-electric batteries are also made of 100% non-toxic materials. The batteries also have ten-year shelf life and can be charged up to five times. The current for the battery is 60mA-300mA, capacity is 1.6Ah-0.6Ah and voltage is 2.1V. The price for two sets of three NoPoPo Eco Water-powered AA Batteries (6 AA batteries in total) are US$ 69.