I feel bad; I was asked to write a review Aug6 but hadn’t received my item yet (and had to indicate a Star so I gave it a one star); received my charger yesterday; came with 3/4 charge so was able to test it right away.. charged my iPhone using the USb-C cable nicely then I recharged the unit quite quickly; it is a great size and weight; i was looking for a smaller/lighter one for backpacking/hiking and this fits the bill perfectly!