Quote:
Originally Posted by pavelh
From the technology aspect of the thing - since e-ink uses energy only to change the display, how could turning screen savers off affect how much energy it uses?
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Because the e-ink display isn't the only thing that requires energy.
There are background tasks, like monitoring the keys for input, that use energy when the Kindle is awake.
Even when it's "asleep" it's not the same "sleep" as a computer (that would be equivalent to the Kindle's "off" state"). In Kindle's version of sleep, it continues other background tasks that can be highly draining, like indexing and wireless communications and downloads (if wireless was left on when it was put to sleep).
E-ink display's use of battery only when it redraws is relevant only as a comparison to LCD, which uses a significant amount of energy just to maintain an image on a screen.