This DC Coupler provides continuous power through your camera's LP-E6 battery compartment—shoot as long as you want without having to change batteries! DC couplers provide long-lasting power to a camera and are especially useful for video, long studio shoots, or events. The ProMaster DC Coupler with AC Power Supply uses a standard wall outlet to provide power. The complete kit includes a dummy battery, transformer, and AC cord. An overall length of 7' gives you freedom and flexibility of movement while connected to continuous power. Key features: -Provides continuous power to your camera using its native battery compartment -Connects to a common wall outlet (140-240V) -7' overall length Works with cameras that use LP-E6, LP-E6N, LP-E6NH, and LP-E6P batteries.