The only complaint I have other than the lack of a Lightning cable, is the fact that there is no ac adapter for charging included in the box, but this small problem is easily overlooked

However, only 4 stars thanks to a horrible, terrible problem that comes up next in Design.[DESIGN = 1 STAR] - Physically, the unit is sleek

at no time did I feel like there was a problem with the unit

However, I have a problem that absolutely infuriates me with my Nexus 6P and USB-C charging, and I can't recommend this unit

In comparison to the other two PowerCore+ batteries, the 13400 and the 10050, this external battery cannot be Quick (re)Charged, although in my honest opinion I wouldn't like to Quick Charge a battery of this capacity as that could possibly decrease the battery life and speed up decay, so no problems there