NEEWER Rechargeable Li-ion Battery Replaces Nikon EN-EL9/EN-LE9A Battery Pack for Nikon D3X D40 D40x D5000 D60 D3000 DSLR Cameras Best replacement for the original NIKON EN-EL9/EN-LE9A battery pack. Capacity: 1200 mAh Voltage: 7.4V Integrated microchip prevents overcharging & lengthens battery life Compatible With Nikon D-Series D3X, D40, D40x, D5000, D60 D3000