Is there any battery life data available yet for the 4G cameras in video mode? I would like to know how long or how many events (12) fully charged 2300mAh NiMH batteries will last when set to photo/video with the video duration set to 10 seconds, not counting video uploads. I have one of the first 4G verizon (GC-V4Gb) cameras that came out which didn't do very well in video mode, and I just put a new one (GC-Z4Gb) in service. Also, I'm curious at the differences in these cameras.