V-Mount Batteries page 5

You use a V-mount (or V-lock) battery when your camera needs just a bit more power than a regular camera battery can deliver. These V-mount batteries have very high capacity and can usually power several devices at once. You can run your video camera, monitor, follow focus and LED light at the same time from a single battery. The V-mount battery is a must-have for filmmakers and is a permanent fixture in any advanced shooter’s bag. Use these batteries together with a V-mount plate that attaches to your video rig or camera.