Anker® Astro 5600mAh USB External Battery Pack Power Bank charger with LED Flashlight for iPhone, Andorid Phones, Smartphone, mobile phone, MP3, GPS, GoPro [Samsung Grade A cells, 5V / 1A] (Electronics)
Video at Amazon.com See All is getting bigger, better, faster - but this part is neglected: the battery. On this point, the development seems to have stood still, more or less, why current high-end smartphones not even come under heavy use partially