26 mayo 2015
New technology makes cell phone batteries last up to 30 percent longer on a single charge. The patented circuitry converts some of the radio signals emanating from a phone into direct current (DC) power, which then charges the phone’s battery.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/_bSd0DQG9QE/150526084942.htm
