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Originally Posted by vitor.fernandes
If that's true then I believe kindle is better designed than kobo. I've had kindles for 3 years and never had to power off. Usually read 2 hours per night. Battery always lasts 2 to 3 weeks, wifi off. I intend to buy the kobo glo now so I expect those to be at least almost as good as kindles
It doesn't make sense. Of course internals take battery just like the battery on my watch to keep clock and things in memory but those are not even compared to a full shutdown and boot. Even my MacBook air has a month battery on standby/sleep and for sure it has much more powerfull internals than e-readers
Most people just don't get the e-ink nature. How the process of something appears on page
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The factor that's confusing you is the "off" vs "sleep" vs "shut down and reboot" in Kindles.
When you let the Kindle go to sleep, or put it to sleep with a quick slide of the on/off slider, it goes into a very light sleep, during which some battery- intensive processes can occur, e.g., indexing.
When you hold the slider for ~20-30(?) seconds, the Kindle will completely shut down (the only true "off") for a few seconds, and then it restarts itself, ie, it reboots.
But if you hold the slider for about 7 seconds, you get what Amazon calls "off“ (it is the closest state of "off" you can keep it in). In this state, unlike "sleep", the screen will go blank, and all background processes, like indexing and wireless, cease.
This "off" state uses almost no battery, which is why Amazon advises users to put it in that state if we won't be using the Kindle for a few weeks.
Turning it back "on" from this off state does not require a boot up cycle. Since it's more of a hibernation state, sliding the power slider immediately "wakes" it up and shows you the same page you left it on.