Hello Rikhar,
Welcome to Apple Support Communities.
We understand that your AirPods are not providing an alert at 20%, 10%, and 5% battery power left as expected. Please use the steps as listed here to reset your AirPods: How to reset your AirPods and AirPods Pro - Apple Support
- Put your AirPods in their charging case, and close the lid.
- Wait 30 seconds.
- Open the lid of your charging case.
- With your AirPods in your ears and connected to your iPhone, iPad, or iPod touch, go to Settings > Bluetooth, or Settings > [your AirPods], and tap the More Info button
next to your AirPods. If you don't see your AirPods in Settings > Bluetooth or in Settings > [your AirPods], just go to the next step. - Tap Forget This Device, and tap again to confirm.
- With the lid open, press and hold the setup button on the back of the case for about 15 seconds, until the status light on the front of the case flashes amber, then white.*
- Reconnect your AirPods: With your AirPods in their charging case and the lid open, place your AirPods close to your iPhone, iPad, or iPod touch. Follow the steps on your device's screen.
AirPods can be associated with one Apple ID. If you want to use AirPods (3rd generation) or AirPods Pro (1st or 2nd generation) that someone else has used, they first need to remove the AirPods from their Apple ID.
Here’s additional information about charging and the battery life of your AirPods: Charge your AirPods and learn about battery life - Apple Support
Apple has recently released an iOS update. We recommend that you use the steps as listed here to ensure that you are using the latest iOS version.
The troubleshooting steps provided may resolve this.
Let us know if you have further questions.
Take care.
