My D80 is old (4 years) and has about 100k actuations. I have starting getting a battery error which according to internet search was somewhat common. All of the threads on the issue are quite old and inconclusive. The problem is that the camera will show a dead battery and not function even with a fully charged battery. I tried four separate fully charged batteries and they all showed up as dead on the camera. UPDATE: Now the camera will work with just one of the batteries for some reason. All of the threads on the topic suggest remounting the lens or perhaps using a lens without VR (it seems like people were grasping for a theory). But that seems like a silly solution. I need a camera that I know will turn on and work with all my lenses. Does anyone have any experience for this problem? Should I get new batteries or buy a new (used D80) or is it time for a D7000 (yes!)?