Concerning this item A variety of Lenovo laptops, the 13" Retina MacBook Air, and the 12" MacBook (2015) can all be charged with 45W PD charging. takes 35 minutes to fully charge a mobile phone from 0% to 60%. Device and usage determine charging time. Lithium Polymer Cell, Micro USB battery 5V/3A is the input. USB-C PD 45W 5V/3A, 9V/3A, 12V/3A, 15V/3A, and 20V/2.25A are the input and output variables. USB-A QC 1 and 2 18W 5V/3A, 9V/2A, and 12V/1.5A output