Hello Greenhorn, so here's the thing: The nameplate says the following: Input = 19.5V with 6.15A. In purely mathematical terms, this results in a value of 119.925Watts.... However, I am not an electrician and have compiled this information from internet research and the information I have read from the dock. HP gives the active power as 100Watts. You can find that by typing the part number 5YH40AV#AB0 into Google.
Anyway, I hope that helps you.