Apparently, it uses a wall wart and barrel plug to connect. Kind of a bummer if you want USB-C or even micro-USB for convenience.
This thing gets HOT. Bought one from woot a few months ago and it’s very hot to the touch after 20 minutes of charging. You also have to get your phone perfectly centered or it work charge. There’s about 1/2" tolerance there.
I have no problems getting the phone to charge using this but like the previous poster said it gets way to hot for my comfort level. Have charged both an iphone and Samsung phones with the same result. Unfortunately dont really use it any more for that reason.