Today, at 1168 images, the battery indicator went to red (ie. 1 bar left, out of 3 bars shown when fully charged). I don't know if this is an anomaly, given that I'm doing a fair bit of review on the camera, though only around 10% are shot with flash, and I've only done 2-3 video captures. I'll keep shooting until the camera shuts down, see how many I can get to.
Another thing I've discovered is that ISO1600 is too noisy for me, but then, I also tend to throw out the ISO1600 images from my DSLR ... ISO800 works fine for low-light pics without flash, though for me the hit rate is probably 50%.