How long is QuietTV's battery life? September 07, 2021 16:06 Updated On average, a full charge of the QuietTV headphones lasts between 5-7 hours. Related articles What do the lights on QuietTV mean? How do I connect to my TV? Can multiple people use QuietTV wireless headphones at the same time? Can others in the room watch TV at a normal volume? What does the tone dial do?