Before measuring the battery drain make sure your headset is charged to 100%

Note: Listening the music on higher volume will affect the playtime

Ideal Playtime is Upto 30 hours at 70% volume (ANC off)  and 20 hours with ANC on. 

Long duration calls and Playing games while using the device will cause more battery consumption

If you feel your device is still not giving expected battery please raise a request on our support page for further assistance