Quote:
Originally Posted by HarryT
What percentage of the battery power of an eInk reader do you think the CPU accounts for? I suspect it's pretty minimal - the screen is by far the greatest user of power. The CPU enters a very low-power "sleep" mode between page turns.
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I had a Sony PRS-500 (their first e-ink ereader). It had great battery life with one exception: using it as an audio player. When I used it as an audio player it would update the e-ink screen once per second (to update the seconds on the time display and the playback position on the progress bar). In about 30 minutes I went from nearly fully charged down to about 1/2 of a charge. Due to this (and that it was a very basic audio player), it was the only time I used it as an audio player.