Feels like a whole new Camera

I literally feels like I bought a new nikon d40 battery grip camera. It makes the D90 feel like a pro body. It adds nikon d40x battery grip weight and it is ergonomically logical. Other info that is not available in the nikon d5000 battery grip manual or the Nikon Website is that the camera works with one or the two nikon d300 battery grip En-El's in it. It will go through one whole battery nikon d300s battery grip first and then go into the next one. That way it gives you time to charge one nikon d60 battery grip while the other is in the camera without interrupting the camera from functioning. That is just brilliant. The vertical nikon d700 battery grip shutter release button can be locked or deactivated individually. It comes with the carrier comedy for 6 AA batteries.