DQ-RS21 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 SONY replacement. -Provides 2800mAh of capacity. -Replaces the following SONY part numbers: NP-FS20, NP-FS21. -Fits the following SONY HANDYCAM models: DCR-PC1, DCR-PC5, DCR-PC2, DCR-PC3, DCR-PC4.