Airpods pro 2 case is out of battery

Hi Tt_nguyen

welcome rto the Apple (user-0to-user) Community.

Re: "Airpods pro 2 case is out of battery : the airpods does not work too even it is fully charge.

... when case is dead (out of battery) then airpod not supposed to work too ?"

Seems the charging case should hold multiple charges before it needs to be recharged.

The airPods should connect with your device if they are well-charged.

Apple Support has articles online to guide users in charging, troubleshooting & etc

You might want to reset your AirPods:

How to reset your AirPods and AirPods Pro - Apple Support

Make sure nothing (a speck of dirt or wax) is blocking :

How to clean your AirPods, AirPods Pro, AirPods Max, and EarPods - Apple Support

To keep your AirPods charged, put them in the case when you're not using them.

Charge your AirPods and learn about battery life - Apple Support

What to do: If your AirPods won’t charge - Apple Support

or

If your AirPods won't connect - Apple Support

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If you still need help: You might want to check if the AirPods are under warranty

How to: Find the serial number of your AirPods - Apple Support

Where to enter the serial number to see what support info. is available:

Check Your Service and Support Coverage - Apple Support

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Resource:

AirPods User Guide - Apple Support

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More Support if needed:

AirPods Support Website:

Find all the topics, resources, and contact options you need for your AirPods....

AirPods Support - Official Apple Support

All the best :-)