CIMO-D290S is an intelligent Bi-voltage V-mount battery can switch from 14.4V to 28.8V by contacting a Magnetic Sticker.For cameras that require 28.8V high-voltage power supply, like RED V-Raptor XL, ARRI ALEXA LF/65, or BMD URSA CINE, simply put the Magnetic Sticker on the specific position of the V-mount plate. When the CIMO-D290S battery is attached, it will automatically supply 28.8V (22-33.6V) power. This effectively prevents safety hazards caused by improper voltage usage.