I have resorted to me that I have cut a micro USB extension and the data lines on the device side is short-circuited. Thus, in the charge indicator of my Nexus then "AC" and not only "USB" display.
However, this can not be the intention.
I would recommend the fingers of the power supply to leave and to look for an alternative.
Whether standing after tinkering ever 2A is available, or less, I can not judge.