There are a few ways to check the battery life of Dolby Dimension.  When on the Power Base, the Power Light will display the current battery level.  If below 20%, the Power Light will pulse orange.  If above 20%, the Power Light will pulse white.  When fully charged, the Power Light will be solid white.


When powered on, pressing the active Source Button will provide battery status.  


When powered on and the battery drops below 20%, an audio prompt will play, and the Power Light will turn orange.