Pretty sure my Dell charger puts out nearly 100W, not sure how compatible it is actually though
Edit:
It is a power supply that came with an XPS 15
The text on the brick claims 5V 1A and 20 V 6.5 A, missing 9V and 15V levels and the current on 20V seems not to be standard. It does charge everything I have plugged it into, but they might all be falling back to 5V1A. The back text could also just not be telling the truth.