@JSWolf, Here is a quote from Porkupan (boroda) himself, dated 30th Sept, 2010...
Quote:
There should be no noticeable effect on the battery life. The 350/650 firmware uses hardware timers to wake up the JS, which do not appear to drain the battery in any significant way at all. In previous generations of readers the JS timers required the software to run for them to work. Not so in PRS-x50. The clock update doesn't count as a page turn. There is no flash access and only a very small portion of the screen is updated.
The hardware timer fires once a minute while the reader is not in sleep mode. Most people read more than a page per minute, so the clock updates attached to page turns will actually drain the battery faster than hardware timer-based clock.
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