he high-capacity Nikon EN-EL4a Rechargeable Lithium-Ion Battery works for the Nikon D2H, D2Hs, D2X, D2Xs, D3, D3s and D3X digital cameras. It can also be combined with the optional BL-3 battery chamber to be used with the MB-D10 grip for the D300, D300s, and D700 cameras.