This?Dual Sony-L Type? Battery Plate Power System for Blackmagic Pocket Cinema Camera powers your Blackmagic Pocket Cinema Camera using two available Sony L-series type batteries. The Plate incorporates a clamp so you can mount it to LWS 15mm support rods and it features a right angle power plug to keep the cable neat and snug on the camera. The plate itself features a two-sided design that mounts the batteries one on each face, two batteries are required to supply the necessary voltage to power the camera. The batteries securely snap into the plate, and you must press a small tab to remove them. A green LED built into the plate lights up to indicate sufficient voltage to power for the camera. When used in conjunction with the camera’s internal battery, you can hot-swap the batteries without powering down the camera. The Power System is Made in the USA.