There was a recently discovered issue with the tape layer (IIRC) on many lithium ion batteries across dozens of battery manufacturers. I think this was about 3

There was a recently discovered issue with the tape layer (IIRC) on many lithium ion batteries across dozens of battery manufacturers. I think this was about 3 years ago now; batteries from any device manufactured more recently than that likely has the tape layer issue resolved and no longer will balloon up again. Be sure you do something like an outlet timer to let the battery discharge to at least 40% once a week, even keeping a device at 80% constantly is not great.