Just yesterday I visited the Nikon West Coast Repair Center. They recently moved from the airport to Hollywood. A 20-minute drive. I had my D7000 in to see why the battery was draining.
They are really nice folks. Willing to talk to you. Camera has another 2 months on warranty. It turns out, that nothing is wrong with either battery or camera body.
The only conclusion I can draw is that I am doing something to pulls too much electricity. I rarely use the pop-up flash. So, I just went through the obvious menu settings that limit juice. I dimmed down the LCD and Control Panel. I cut the display time for INFO, Playback and one or two others.
Is there anything I overlooked to conserve battery charge? Oh, and I rarely "chimp" after taking a shot.