For camera and production power management, the Neewer Nt-Q300 Camera Battery and Charging Accessory with 16.4ft offers a practical place to start. Add a practical power option to your camera or monitor kit. The Neewer Nt-Q300 Camera Battery and Charging Accessory with 16.4ft is an easy addition for creators who want more control over camera and production power management. Its listed specifications include 16.4ft.