The Sony NP-FV100A V-Series Rechargeable Battery Pack is compatible with all Handycam camcorders and features a 3410mAh capacity. Part of Sony's InfoLITHIUM V Series, this battery is designed to communicate remaining life in minutes on compatible cameras' LCDs.
Specifications for
Sony NP-BX1 Rechargeable Lithium-Ion Battery Pack (generic)