Guys, yesterday I was recording a concert via the PCM-D100 internal mics from a front-row seat. I was recording with the 48/24 setting, Low-mic continuation and the 100SNDB feature set to on. As I finished the first hour of recording and the concert entered some sort of silent mode, I stopped recording and started a new file. However, after almost 8 minutes of recording the PCM-D100 suddenly turned off, prompting me to think that I'd run out of battery juice. But when I turned it on, the recorder displayed 2 battery bars and the next recording smoothly went ahead for the rest of the concert -- another hour or so. Now, as strange as my question might sound, what do you think might have generated that problem? I have 18GB of free space on the internal memory and haven't yet resorted to using a memory card for the D100. Should this be cause for concern in future recordings?
Also -- and as a relevant issue, I'm wondering when I should consider replacing the PCM-D100 batteries. Currently it displays 2 bars, but I don't know to how many minutes/hours these remaining bars can be translated. As I'm visually impaired (totally blind), I have no choice but to ask someone to check the battery status for me -- for fear of ending up with no juice. On the other hand, getting rid of these batteries which still have some juice left might be overkill. It's a pity Sony hasn't added the option to make its recorder menus/options talk -- most Olympus LS recorders have this great feature for the visually impaired.
Thanks for your comments and insights