Default I can't seem to get Fast Charge to work properly

So on any kind of ROM, using either Matrix or Fauxkernel regardless of cable and usb slot-type: fast-charge just does not want to work on the phone as intended. Regardless of how I configure USB connection settings or debugging or even driver installation(which shouldn't matter, but it was advised anyhow) the phone can still detect a USB connection instead of the AC that I am trying for. Is there something that I am just not seeing that I otherwise could have missed? It's only the N4 and the Moto X that i seem to have a consistent problem getting Fast Charge to work as intended.