The Dracast 2 x NP-F 2200mAh Batteries and 2 x Charger Kit provides power to LED light fixtures when mains power is unavailable. The kit contains two NP-F 2200mAh lithium-ion batteries and two multi-voltage chargers. Runtime is approximately 90 minutes with Dracast's LED160, LED200, X1, or X2 lights on a fully charged battery. This kit also comes with a V-Mount to dual NP-F converter. It allows you to power any V-Mount / V-Lock light, monitor, or other equipment with two Sony-type L-series or NP-F batteries, as long as the voltage is equivalent. The combined voltage of the two batteries is 14.8V, which equals standard output power of a V-Mount battery.