And you know what's stupid? The Sony DSC-WX10's that I got for installation in the DIY Book Scanner at the NextFab makerspace are really good. But they stuck the power socket on the bottom, where I can't get to it. But even if I drilled a hole to get to it, there's another problem: the camera is designed so that it will only use AC power when in playback or off. Not during recording. I have no idea why -- noise? Elitism (the con/prosumer divide)? This makes it very difficult to use these cameras for relatively long books, and especially with WiFi cards, which take even more power.
In any case, I'm planning on making some kind of acrylic fake battery pack that can be hooked directly to an AC adaptor.