Samsung engineers have created a new process that will allow ordinary tap water to provide the electrical power for mobile phones. Water stored in the phone will contact a metal plate. The reaction between the plate and water will create hydrogen gas. The hydrogen gas is then funneled into a fuel cell, where it will further react with oxygen to create electrical power. Because the reactions can generate up to three watts of power, these water-based fuel cells will be powerful enough to be used in devices such as mobile phones. Current versions of the fuel cell can provide power for about 10 hours, and the metal cartridge needs to be replaced about once every five days. Future generations of this technology will not require the cartridges to be changed. Users will be able to fill their phones with water and get power.

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