If you’re having problems getting an iPad to charge from a USB port then you may be interested in reading the support document Powering Apple and third party peripherals through USB.
Hello,
I’m Mike
Welcome to my blog, which I have maintained for several years, off and on, to share things that I’ve learned from numerous projects and various problem solving escapades. This is my way of giving something back to the online communities that have helped me learn more about a wide variety of topics.
Press Any Key 
Leave a comment