They've commented on the battery life on their blog:
Quote:
If MP3 is OFF and you are not turning a page or using a menu, our device is in sleep mode. Your screen shows of course the current page but the processor and memories are frozen.
In this mode, the Cybook can wake-up in half a second (500ms) which is almost unoticeable. If you look at the video, the Cybook is often in sleep mode (after one second of inactivity the Cybook fells in sleep mode).
In this mode the battery lifetime is around one week.
You can also choose to switch completely off your Cybook to preserve your battery (the screen becomes completely white). The Cybook will take around 14 seconds to wake-up. In this power off mode the battery lifetime reaches several month.
Michael (for Bookeen)
PS: decreasing booting time and increasing sleep mode battery lifetime are of course on our todo list.
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