From PESWiki

Batteries that run on water to produce electricity.

Products

CENIMA's Paper Battery

• 
  Featured: Batteries > Water-Powered >
  CENIMA's Paper Battery that Charges with Water from Humidity - CENIMAT researchers in Portugal have developed a paper battery technology that store or even harvests energy from water. The charging process is automatically initiated at the sites with more than 40% moisture in the atmosphere. This innovation can be used for the production of power for electronics. (PESWiki and BeforeItsNews; July 19, 2011)
  

H20 Battery from Tango Group

Tango Group has a line of H20 Battery products including clocks and calculators

Product line utilizes water-powered battery that consists of two electrodes made of special alloys, which, when immersed in water, the resulting chemical reaction produces electricity. Simply refill the battery as the water evaporates - typically every 2 to 3 months. The battery has a minimum continuous life of 2 years.

Official Websites

• http://tangogroup.co.uk/products.htm
• http://www.tangogroup.net/products.php

Resellers

• Amazon.com (in association with PES Network)
  • H2O Multifunction Clock - Replaceable Water Battery - Time\Alarm\Timer\Temperature
  • H2O Water Powered Digi Clock - Black
  • H2O Water Powered Digi Clock - Royal Blue
  • H2O Water Powered Calculator - Silver

• http://www.simplyradios.com/acatalog/H2O.html
• http://greenfuturesfestivals.org.uk/sales.html
• Centre for Alternative Technology - Water Powered Multifunction 4-in-1 Clock

Instructions

• Water-Powered Multifunction Clock
• Water-Powered Desktop Calculator

Magnevolt

• Magnevolt - The water activated battery is popular in the oceanic field and military. It has a high energy density, long shelf life and good low temperature performance. They use Magnesium Silver Chloride and Cuprous Chloride Magnesium with no electrolyte until it is immersed in the salt water or fresh water. As long as the batteries remain sealed they have indefinite shelf life.

Coverage

In the News

CENIMA's Paper Battery

• Batteries powered by water - Susumu Suzuki, the president of Tokyo-based building material maker TSC (Total System Conductor), has invented water-powered batteries, which have an electric current as powerful as that of a standard manganese dioxide battery. (Reuters; Nov 8, 2006)

• Batteries Can Now Be Powered by Water

• New power source - Larry Kostiuk at the University of Alberta in Canada, is working on a water-powered battery. Its special trait: creating electricity directly from water on the tiniest scales. As water moves through microscopic channels within a glass or ceramic-filter tube, electricity is converted directly from water. The experimental tube, about 2 centimeters in diameter, has about half a million tiny channels or holes through which the water is inserted by a hand-operated syringe. As water travels over the surface of the channels, it becomes electrically charged when its ions rub up against the solid surface. Scientists placed electrodes at the ends of each channel and then extracted electrical energy as current flows between the electrodes. Right now currents are very low, around 4 microwatts, but millions of channels could be added together to increase the power output enough to create a water-powered battery. (Christian Science Monitor; November 13, 2003)

See also

• Directory:Water

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