Quote:
Originally Posted by tigrangh
Really? Even if display shows that charge complete?
No USB port doesn't go to sleep mode.
Saying 2.5K page turns I mean ALL screen-full-updates ( e.g. navigation in menu, turning pages in books, using dictionary... ). It's pretty far from 7.5K or 10K page turns. Actually I'm "spending" only approx. 1.5K turns IN BOOKS in 3 days. 
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Originally I could knock mine flat in as little as three days, but after a few full charge/discharge cycles so the reader could more accurately calibrate the battery life, it's a bit better now.
Now, with heavy reading activity, I get about a full week of use, and can pretty easily get through a normal 350-400 page book on one charge.
That's with just normally distracted reading, which wastes some power due to long delayed page turns forcing the reader into standby using the standard power-save standby timer with no hard power shutdowns.
This is reasonable, because, if I don't set aside time for reading and read off and on very casually, I end up keeping my PRS-650 awake, and the touch screen active for maybe 8 hours or more every day, and 4 or 5 days of this is about the limit.
If I use both the normal standby-mode timer PLUS a hard shutdown when I know I will not be using the reader again for more than a few minutes (say several hours, or overnight), and get stingy about all none essential fiddling around and just read straight through, then I could pretty easily stretch that to a week and a half or two weeks, and two full novels.
The difference is in how long the reader has to stay fully powered up with the touch screen active in reading mode.
On a realated topic, is there a "How Could Sony be so Stupid?" thread somewhere with a list of features that Sony must have been suffering from brain damage to have missed ???
Like with GIGS of available flash memory, how about more than one default font option ???
IF SO, HERE'S ANOTHER SOLID GOLD FEATURE TO ADD TO THE NEXT SOFTWARE RELEASE THAT SHOULD HELP WHEN MORE BATTERY LIFE IS NEEDED . . .
Update the firmware, so that if you hit BOTH the < and > page turn buttons AT THE SAME TIME FOR TWO FULL SECONDS, then the PRS-350/650/950 will pop up a window and tell you that THE TOUCH SCREEN HAS BEEN DISABLED for page turns.
After that the reader could save a lot of power, by NOT having to keep the touch screen on all the time.
This mode would ONLY effect reading page turns and highlighting; the touch screen would re-enable and work normally temporarily whenever one of the menus like HOME, ZOOM, or OPTIONS is being used, and then shutdown agin when you return to reading, until the user re-enables touch page turns by AGAIN pressing < and > together for at least two seconds.
So the change would not effect touch screen operations at all when accessing menus, only when actually reading.
NICE
If Sony wasn't totally stupid in their hardware design, and used a processor architecture that can go to sleep, and wake ONLY when a key is pressed, then the above simple change would let them create a no-touch-screen-page-turns mode that would rival the kindle.
No doubt, this would be VERY popular with folks who need extremely long battery life, or those who just don't want use the touch screen for page turns.
So here's hoping that someone from Sony actually bothers to READ this forum.
P.S.
You want to use that Idea Sony, fine, it's yours, but you owe me a free PRS-350.
P.M. me here on Mobil Read and let me know where to pick it up.