> And even if you dont use it much the battery will still deteriorate after 2 years. I bought some Sony over-the-ear noise cancelling headphones 3-4 years ago.

> And even if you dont use it much the battery will still deteriorate after 2 years. I bought some Sony over-the-ear noise cancelling headphones 3-4 years ago. I only tend to use them when flying (only a few times a year). I have an old pair of original AirPods (2016) I use as backups. I haven't noticed any deterioration. I'm sure there is some, but a majority of the aging is due to use.