Amazon.com: Synergy Digital Camera Battery, Works with Nikon D3X Digital Camera, (li-ion, 11.1V, 2200 mAh) Ultra Hi-Capacity, Compatible with Nikon EN-EL4 Battery : Electronics
Amazon.com : iShoot 8cm Quick Release Plate for Large Camera Body with Battery Grip, Compatible with Canon EOS 1D 1Ds 1DX Series, Nikon D1 D2 D3 D4 D5 D6 Series and Arca