The Indipro Sony L series battery adapter plate allows you to power your camera or device that requires a Mini USB. By inserting a Sony L type battery into the locking plate, the attached Mini USB cable can power-up the camera or device for extended period of time. There is a 1/4 20 insert for mounting on a camera or rig. It provides an output of 5V. To remove Sony L battery from plate, press Locking device and slowly slide battery out of plate. The INDIPRO Sony L Battery Plate adapter is designed to last through all aspects of production. The cable is 24" in length.