Robert wrote: > Does anyone here have any "feel" for the "Battery disconnected" and > "Battery reattached" log entries? > The rebooting came as a result of me turning off modems, router, > external drives, monitor, cordless phone and finally, the computer, > trying to locate a quiet but annoying "chirp". The "chirps" stopped > when I tilted the UPS to look at the front panel. As you can see, log > entries stopped at as suddenly as they started. <snip> Ah, yes, *that* chirp. Try doing a self-test on the battery. Oh, and I don't suppose the replace battery light's on? Check the manual - there's some trick to pushing in one of the buttons to tell it to shut up. mark