LifestyleElectric HotelTo play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoLifestyleInterview: Elizabeth Grenier06/10/2014June 10, 2014Sebastian Fleiter was at a summer music festival when the battery on his cell phone ran out. He figured he wasn't the only person who'd had this experience, so he came up with a clever solution.https://p.dw.com/p/1CFKEAdvertisement