Well, if anyone is curious, I taped a 3 hour show last night and had absolutely no problems with battery power. In fact, I taped the show, listened to it for an hour in the car ride home, and the battery indicator is still on full as I type this. I am amazed. 24/96 the whole time writing to an 8gb, Class 6 Transcend card. Duracell HR6 2650mAh batteries. This was a good investment.