This Dual Sony L-Series Battery Plate System to V-Mount Adapter is an alternate solution for a V-Mount Battery. This power adapter will extend your run time on your camera/device by using two available Sony L type batteries. This system includes a V-Mount adapter on the back and additional 2.5mm DC jack at 14.4volt unregulated output for powering a second device. By connecting two Sony L-Series batteries (2x Sony NP-F970 type batteries) it will provide roughly 95 watts of power. The unit has a LED power reader to see the level of each battery. These solutions are extremely cost-effective for those who already own Sony L-Series batteries. Assembled in the USA.