When did my phone power off due to low battery? Is the information recorded somewhere? I'd like to know when my Android phone powered down due to low battery.  Is there a log or way to see this?  I am running a new program that makes use of BlueTooth and I suspect that's the problem.  I ran the program over the weekend and when I recovered the phone, it was dead.  Of course I have no way of know if the phone died after 1 hour or 23 hours.   I'm guessing the operating system logs it somewhere.

The phone in question is a Sony Ericsson Arc, but I'm hoping the answer generally applies to all Android phones.
You should install Watchdog Task Manager Lite.
It will monitor all your apps and tell you which apps are consuming the most battery and why.

For all your logging needs, install aLogcat (free) - logcat.