DSTE 2x EN-EL4A Rechargeable Li-ion Battery for Nikon D2Z D2H D2Hs D2X D2Xs D3 D3S D3X F6 Camera D300 D300S D700 MB-D12 MB-40 Battery Grip as EN-EL4 Battery Type : Li-ion Battery Capacity : 34.4Wh/3100mAh Battery Voltage: 11.1V Info Function for Life Indication High Capacity for Stamina