single AirPods purchase

Hi Pepla61,

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

Guess nothing is ever really predictable:

To replace a single AirPod:

ie: the correct right or left AirPod, for the correct AirPod version (same as the remaining AirPod and charging case) should work.

How to: Identify your AirPods - Apple Support

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

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Info. about the Replacement: AirPods Repair & Service - Apple Support

and

Steps showing how to:

Set up your replacement AirPods or charging case - Apple Support

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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 :-)

Pepla61 Said:

"single AirPods purchase: how do I know if a single AirPods bud purchase will work with my current one?"

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Mixing AirPods to Operate:

No.  AirPods must be of the same Serial Number to operate.