My top shelf Bluetooth headphones play a three second warning sound *wuuuUUUU-wuuuUUUU-wuuuUUUU* when battery level drops below 10% and then it plays the sounds every 10 minutes regardless the battery level or usage. It's set to be always louder than the audio listened to. The headphones do this independently, the left piece might hit 10% earlier than the right piece and they blurp the warning sound individually every 10 minutes. The batteries are still good for another hour minimum.

The warning is so loud I set my watch to 9:50 minutes timer to take out the earpiece, wait for the alarm, and put the back in 😔🔫 what were they thinking... This isn't nuclear annihilation approaching, it's just flat headphone batteries. Chill the fuck out with those video game soundeffects.

This whole setup is so wrong and over engineered. One beep when 10%, another when 5%, a tuut tuut at 3% would be plenty.

Can't change it in the settings, can't access the firmware, it is what it is.