Quote:
Originally Posted by Solitaire1
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.
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Modern eInk display controllers have the ability to update only a small part of the screen, which should greatly alleviate this type of problem.