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Old 08-29-2010, 04:14 PM   #47
sirmaru
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Join Date: Nov 2007
Device: Kindle PW 2013, HDX 2013, Galaxy S5 2014
What is the difference?

Quote:
Originally Posted by TomF View Post
If you truly understand the technology behind e-ink you'll realize that "shut down mode" doesn't save any more power than sleep mode. A tear down of the K2 indicated that when power was completely removed the screen continued to display the last image. That's the way it's designed to work. With Wi-Fi off and no indexing being done, the only time a Kindle uses power while reading is when it does a page turn. It doesn't operate like other electronic devices and there really is no "off".
Then what is the difference between Sleep Mode and Shut Down Mode? At a minimum I believe Shut Down Mode would also stop the WiFi from working. Perhaps, just shutting down WiFi would have the same effect.

With the PRS 900 those two modes DEFINITELY made a difference in battery life.
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