left airpod battery drain

Hey Magi (with a lot of i's ;-;),

Try resetting your AirPods. You can do this by going into Settings >> Bluetooth >> Click the (i) icon next to your AirPods >> Scroll down and click "Forget Device" >> After this hold the button on the back of your AirPods until the white light flashes and follow the on screen promps as if you are pairing your AirPods again to your iPhone/iPad/Mac.

If this does not fix the issue, you can travel to your closest Apple Store and check out Apple's Repair & Replacement Program which offers battery swaps for a service fee. :) Here is the link: AirPods Repair & Service - Apple Support (IE)

Hope this helps! :D