I bought this charger http://smile.amazon.com/dp/B00SZHOI8U And one of these cables http://smile.amazon.com/dp/B01706YAXY And when I plug my 5X in it says charging rapidly or whatever.

The cable was on the list of good cables in the spreadsheet at the top so I took a chance with the charger and it seems to be ok. That said I don't know how well it would work if you actually used both USBs on the charger at once.