Battery uses urine to power devicesLeakage no problem hereBy INQUIRER staff: Friday 20 January 2006, 07:17CELLULAR NEWS reports boffins from Singapore have created a paper battery which can use human urine.The battery can produce a voltage of 1.5 volts at 1.5mW. It works by putting .2ml of urine on paper soaked in copper chloride between layers of magnesium and copper.