I've used this Nektek since February and it works perfectly. Benson Leung approved
I've got this thing and it charges just as fast as the stock wall charger. Cable is built in for about the same price as other chargers with no cable. Has an extra 'A' port too that is supposed to work full speed at the same time, but I've never tried that.
I've had this one since June. It's quick charge and has an extra usb port. https://www.amazon.com/charger-Nekteck-Charger-Adapter-Integrated/dp/B0172QQNBY/ref=sr_1_3?s=wireless&ie=UTF8&qid=1488948736&sr=1-3&keywords=usb+c+car+charger