My Sony PRS 600 has given up the ghost. The battery life has been erratic since new, and I never felt I was getting close to the 7500 page turns, 750 might have been closer. This morning it went from 2 bars to No Battery opening a book. So I charged it up using the mains charger after 6 hours it is till charging with the red light on. I unplugged it anyway and on start-up it announced "No Battery". The last resort is the Hard reset, but I think it may be a warranty return.
Anyone else out there seen anything like this, or have any other ideas on what to do?