Originally Posted by Lo Zeno
A stupid question, but I ask it anyway: you left it "turned on" the whole night? Your device *should not* consume battery energy even if turned on (it does only at every page refresh), UNLESS you are listening to MP3s also. If you were listening to music while reading, and failed to stop the music / unplug the earphones when you stopped reading, it might have kept playing musing and thus empty the battery.
Yes, I left it turned on, like I do every day, actually I never turn it off.
As I have OpenInkpot installed, there's no way I could have had music on