Sony NP-F570 L Series InfoLithium Battery for DCRVX2100, HDRFX1, HD1000U & HVRZ1U Rechargeable Lithium-ion battery pack designed for Handycam camcorders Provides up to 5 hours of continuous recording time 2200mAh storage capacity without the memory effect found in other batteries Built-in microprocessor accurately calculates remaining power within minutes Features 30% more stamina than the NP-F550 rechargeable battery pack