The SSL-JVC75 is a 55-watt-hour (7.4V/7350mAh) lithium-ion battery manufactured by IDX for JVC cameras. While mounted to the camera, the battery's "X-Tap" connector provides power to an accessory such as a camera light. It's ideally suited for use with the GY-HM600U, GY-HM650U, GY-HMQ10U, and DT-X series portable monitors.