Quote:
Originally Posted by sirmaru
To really have a valid way of measuring a PW, one MUST record each reading session in a spreadsheet using date, start time, end time, reading time. Then have the spreadsheet total the reading times. The vast majority of users would never devote the time or precision to make that measurement.
|
To be even more pedantic, you would also have to record the number of page turns per reading session. As previously mentioned, a major consumer of power for any e-ink device is changing the display. You would also need to note whether you're doing a full refresh each time, as that also changes the amount of power consumed per page turn.
Any way of measuring the battery life that works for an individual is "valid." Few people are especially concerned with the total hours of reading time, so much as how many days they can go without charging their device based on their own personal usage. So someone saying "I read about 2 hours a day and it lasts two weeks" is an extremely valid, albeit completely subjective, way to measure battery life.
What's more interesting to me is the difference between level 0, 10, and full. It's nice to know that turning the light right off isn't "worth it" from a battery consumption POV if it affects my reading comfort, but that cranking it will reduce my time between charges by almost 75%. With all your spreadsheet advocacy, you didn't mention what level you were reading at and whether you changed it depending on lighting conditions.