Although it varies by usage, battery life averages 35 hours. The battery light indicator starts flashing when there are approximately five hours of battery life remaining. When a replacement is needed, tilt the headband away from the right earcup and open the battery compartment. Insert one AAA alkaline battery (IEC LR03) into the battery compartment.
Battery life and replacement
Note: Remaining battery life may vary when using rechargeable batteries. NiMH batteries, composed of nickel metal hydride, are recommended.