Yes, you can replace one AirPod with another of the same model. Once you have the old and new one, put them both into the charger case, open the lid (it will have a yellow status light flashing). Then, keep the setup button pressed for around 5–10 seconds.
Can I use one AirPod I found?
To use just one AirPod, simply place an earpiece in one ear and leave the other AirPod in the charging case. You can switch them just as easily –- the W1 chip in the earphones will detect which one is in use and automatically pair it with your iPhone.Mar 29, 2019
Can you pair AirPods with different serial numbers?
The AirPods are not individually labeled with a serial number. You can use a different set of AirPods with the battery case, as they are interchangeable. You would just need to pair those AirPods initially with the battery case once you first start using with the iPhone.Nov 23, 2017
Is it possible to buy only one AirPod?
You can't buy AirPods with only one AirPod from Apple's website directly. However, you can either: contact Apple Support on the Apple website and ask to buy a single AirPod and case, or you can buy them with both AirPods then sell the one you don't need.Apr 23, 2019