On my D200's I had to remove the cover since part of the grip went into the battery compartment where the contacts were. On my D700 I don't have to since the electrical contacts are on the camera's bottom plate.
Yep. You probably have to remove it on your camera. At the hinge of the door there will be a spring or a little lever that covers a spring mechanism. Slide it and the cover pops off. Be sure to put in a safe place.
Not on mine (D700). However, there is a rubber cover next to the battery that comes off and the connection thing-a-majigs are there. It locks by screwing onto the tripod mounting hole.
With my D40 I did have to remove the battery door. The grip had a slot you could store it in. With my D7000 you do not have to remove the battery door. The disadvantage with the D7000 grip (MB-D11) is that you have to remove the grip to change the body battery. A little weird but that's okay.
Yep. On many cameras the battery door just snaps on and off and grips have a place to store the door, or any other part that needs to be removed for the grip to work, like the D300/D300s/D700.
Yep. On many cameras the battery door just snaps on and off and grips have a place to store the door, or any other part that needs to be removed for the grip to work, like the D300/D300s/D700.
On most (I'd say all, but I can't guarantee that) Nikon dslr's you simply hold the battery cover at a 35 degree angle and pull it out. Super easy. It feels like it's going to break, but it won't. I know for a fact this is how the D40, D80, and D90 are because I've physically done it on those three cameras.