JETech® USB Power Bank 3000mAh Ultra-compact and portable external backup battery pack and charger for iPhone 6/5/4, iPad, iPod, Samsung Devices, Smart Phones, Tablet PCs (3000mAh, Champagne gold) (Wireless Phone Accessory )
So far, it's all good! Compact, efficient, we must not see it as a main phone charger, but as an emergency charger (long trips, air travel, from home starting with a low phone battery etc ...) His side compact allows it to be forgotten in the corner