The NP-FZ100 is a rechargeable battery pack from Sony, offering reliable high stamina and a high power capacity of 7.2V/16.4Wh (2,280mAh). It is compatible with InfoLITHIUM technology. This Z-series battery pack is designed for compatible cameras, including the a9 & a7 III Series. It features over twice the capacity of the Sony NP-FW50 W-series Rechargeable Battery.