Quote:
Originally Posted by pilotbob
What? That's news to me. It was my understanding that it only used power when you turned the page, to redraw the page and that the O/S is held in NVRAM and only "runs" during page turn.
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No, the
screen only uses power when it's refreshed, but the CPU, RAM, etc, have a small but constant power drain.
Quote:
Where did you get your information that the Sony still drew power other than during a page turn?
BOb
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It is a well-established fact which simple observation will demonstrate. Leave your Reader turned "off" and you'll find that it will lose about 1 "bar" of charge from the battery meter every 5 or 6 days. A fully charged Reader, left unused, will flatten its battery in about 3 weeks. There are brave people who have taken the Reader apart and measured the power drain in different circumstances; it's pretty constant whether the Reader is "off" or "on". All that actually happens when you turn the Reader "off" is that the screen blanks and most of the buttons are disabled.
Unless you're an exceptionally heavy reader, the constant power drain of the o/s is a more significant factor in determining battery life than the page turning. If you read for an hour a day, say, the machine will lose a lot more charge during the 23h each day that it's "off" than during the 1h that it's "on".
The 505 has a menu item allowing you to genuinely turn it off, but then you have to wait a minute or so for it to "cold start" the next time it's turned on.