REPLACES SONY NP-FZ100. LI-ION 7.4V 2850 MAH 21.1WH. The battery have a charge capacity of 2850mAh for SonyA9,A7III,A7RIIICameras andVG-C3EM Gripso So, you can keep your Camera devices up and running for a longer time than withregular alkaline batteries