Ok, I got two full charges from one AA with the emergency charger.
Well, it appears that my third camera will save the last clip as the battery is depleted. I charged it from dead with the emergency charger and then let it record until dead again to make sure I got a full charge. To my surprise, I had 3 files, (2) 20 min. files and a 9 min. file, almost filled a 4gb card. I think it will be somewhat interesting to see how big the 4th file is when using the emergency charger to charge while recording, so I am charging up to do one last test with the e-charger. This info is most likely not very useful to anyone so if want, tell me to stfu and I will.