Fuel cell charger is a device that uses saltwater and oxygen to convert chemical energy into electricity, then it uses that electricity to charge your phone's battery. The charger consists of a credit card-shaped power card, and a hollowed out port that's roughly the size of a smartphone. The power card contains saltwater, which can be converted into electricity. One power card produces about 1,800 miliampere-hours worth of electricity, which is enough energy to fully charge an iPhone 6s.I think this technology is useful and innovative because with chemical engineering, now it is possible to charge our devices without an electric outlet, but by producing electricity chemically.
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