Power your camera or device with a Sony L-Series battery using this L-Series Battery Plate Kit from Bescor, which includes a compatible power cable with a 2.1mm male barrel for 12V devices.
The battery plate accepts a separately available L-Series battery and it features a female barrel connector output. The included cable features a male barrel connector that attaches to the battery plate, and on the other end is a 2.1mm male barrel for 12V devices.
