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) 5
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)
Does what it says. Moreover, the LED's help very, before / after the trip to assess the residual capacity, which unnecessarily frequent intermediate store saves.
The only downside (no deduction worth) is the included USB cable. After a short while the Micro plugs have been bent and wobbled. But replacement was always around at home.