So, I am rather happy with my battery life. I just want to know how I can measure how much time I actually get out of it. All the posts about battery life and Linux/Ubuntu/etc seem to be about improving it or similar. All I want to do is measure it.
Presumably the system logs whenever I plug/unplug my power chord, whenever I suspend/resume, and whenever I turn off/reboot. It seems there should be a way of measuring how long the computer has been on battery (up to charging the computer when closed, of course).