Beoplay H9 low battery

Just want to check if someone else is experiencing the same as me or not.

My Beoplay H9's are now on 30%. They keep beeping every 15 seconds, warning me about low battery.

So I basically can't listen to them when battery is under 30%. A few beeps would be enough, then next warning at 20%. But all the time is not ok.

After five minutes of beeping the stopped.