The Sony NP-FZ100 is a high-capacity, rechargeable lithium-ion battery for Sony's Z-series cameras, offering reliable power for professional photographers and videographers. A key feature is its InfoLITHIUM support, which allows the camera to display the exact remaining charge on the LCD screen. 

Specifications

Capacity: 2280mAh / 16.4 Wh.

Voltage: 7.2 VDC.

Weight: Approximately 83–85 grams (3.0 ounces)

Chemistry: Lithium-ion

Charging: Can be charged in-camera or with a dedicated charger like Sony's BCQZ1

Compatible cameras

 the NP-FZ100 is compatible with a wide range of Sony cameras, including: 

Alpha 1 (a1)

Alpha 9 series (a9, a9 II, a9 III)

Alpha 7 series (a7 III, a7 IV, a7C, a7C II, a7R III, a7R IV, a7R V, a7S III)

Alpha 6600 (a6600), Alpha 6700 (a6700), Alpha 7C, Alpha 7CR

FX3, FX30

ZV-E1, ZV-E10II