I recently purchased a new MacBook Pro w/ Touch Bar. I had a MacBook that I traded in as a part of the process. Since I travel pretty frequently I try to keep chargers, etc. to a minimum. For the MacBook while on the road I was using an Anker USB Wall Charger and a USB to USB C Charger. While it didn't charge quickly it would do the job in a pinch. I have noticed that the 40W Charger just doesn't have enough juice and the battery menu bar confirms it with an acknowledgement that it is not charging. Are there USB Wall chargers that would work? USB-C and USB Combos? Or do I need to break down and get another apple charger and USB C cord (I keep one at work to dock my MacBook with a monitor).