: Re: How much of the power does the screen of e-Ink device consume? On Android smartphones, when you look into Power settings, it shows a neat usage graph, which usually looks like this (my phone

@Annie

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The Kindle eInk devices do not run the Android OS, they run Linux. I believe most of the other eInk devices run Linux as well.

That being said, your question is difficult to answer because the energy usage of an eInk screen is so much lower and the way energy is used is very different.

The easiest answer to your question is that 1% is as accurate an estimate for an eInk device as 40% is for the typical Android smartphone. According this page at the MobileRead Wiki, the most common eInk screen takes 750 - 1800 mW during an active update (i.e. turning the page on an ereader) and 1 mW otherwise. Whereas an efficient LED screen will take something like 750 mW constantly (Warning PDF link).

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