After additional testing, Flash 10.1 still consumes about half the battery of the HTML5 equivalent in the browser on the Nexus One. This time running for 30 minutes, instead of 10, the canvas demo consumed 12% battery and Flash 7%. Arguably this is only a 41.66% difference but you get the point. Want to reproduce this test at home? Here are the steps that I went through: Procedure: Navigate to the