This is a great portable charger. I take this with me everywhere. It charges my devices with no problem. I can charge more than one device at a time. I didn't realize that it was a fast portable charger until I tried out the C port. I typically use the USB ports for charging but the C port is very fast. The battery life on this is phenomenal. I can fully charge my phone and still have enough battery to charge another device if needed. I would definitely recommend this portable charger to anyone looking for one.