DQ-RL4 Whether you"re at home or on-the-go, a long life camera battery will ensure that you have the power you need, when you need it. Features: -Lithium-ion rechargeable battery. -Smart technology communicates accurate information to the camerar. -No memory-effect. -Overcharge protection built in. Specifications: -Direct NIKON replacement. -Provides 2000mAh of capacity. -Replaces the following NIKON part numbers: EN-EL4. -Fits the following NIKON D SERIES models: D2H, D2HS, D2X.