What's the battery capacity and what does powertop report as a discharge rate for casual normal web browsing and hd video playback in a separate tab? (mine is 9

What's the battery capacity and what does powertop report as a discharge rate for casual normal web browsing and hd video playback in a separate tab? (mine is 9 - 14 W) I've never used a laptop with Linux that could stay unplugged for more than 3 hours, using a tlp configuration as well. (ignoring any laptop that can have an XXL battery which sticks out of it's standard frame).