U.S. teen invents 30-second cell charger

May 21, 2013, 10:15 AM EDT
A sign directs people to a cell phone charging area, where power strips are attached to a generator powered by two men on a tandem bicycle on Avenue C in the East Village November 1, 2012
AFP/Getty Images/Stan Honda

Battery life is a common complaint among users of mobile devices as smartphone makers seek ways to make batteries last longer in smaller pieces of technology. An 18-year old from California has invented a device that can charge a cell phone battery in 20 to 30 seconds, winning $50,000 from Intel. Eesha Khare is headed to Harvard, and her device has those in the wearable technology industry turning heads.