The NP-F970 is a rechargeable battery pack. Each pack includes a NP-970 battery suitable for use with the DSR-PD170P, HVR-Z1E and HVR-M10E products. Key features include STAMINA super-long battery life and lithium-ion cells with no Memory Effect . Both highly efficient, compact and light-weight, these batteries have a built-in microprocessor which communicates with the camera, and accurately indicates remaining battery time in minutes.