D-8161S is a 14.4V, 190Wh V-mount digital camera battery. It has a 4-level LED indicator to give the user a view of remaining power. D-8161S is compatible with RED camera, and the remaining capacity and running time is displayed by the camera. By connecting this battery with the SWIT D-4200 battery watch (sold separately), the user can read battery information including exact remaining capacity, running time, real-time power, voltage, and more. The D-8161S battery's built-in intelligent circuit has multiple protections for over current, over voltage and excessive temperature.