External battery good quality. No complaints. I was surprised upon delivery of the product quality. Protective pouch supplied and very practical. In a single charge I already charged 2 times my smartphone and once my iPad and it remains my battery. Awesome What ;-). Only downside, failure to take 220 to recharge the latter. Just a USB cable (forget if you do not want to spend three days ..) So providing a power supply 220v / usb 2a about 10.