Slim, Portable Charger Could Keep Your Phone Powered for a Week

Though smartphones can do many amazing things these days, we can all admit they honestly turn into useless paperweights when the battery dies. So a Provo, Utah-based technology company has developed a portable charger that they claim can power the average smartphone for nearly a week.

The "Reservoir" from Dark Energy is a slim, portable charger that looks a lot like your phone, as explained in the video above. It can recharge the average smartphone four to six times, which could translate to an entire week's worth of power. That sounds like an ideal gadget for emergencies, and since the Reservoir can hold a charge for well over a year, it would be a good addition to any emergency kit.