The 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 runs completely compatible with RED camera, and the remaining capacity and running time could be read from RED 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, circuit, and more. The D-8161S battery's built-in intelligent circuit has multiple protections of abnormal current, voltage and temperature.