degradation

So I just noticed my battery health dropped to 99% today after it had been holding steady at 100% (nooooooooooo) So I was curious to see what you guys had as cycle counts and health ***For the "stop obsessing about battery crowd"... Yes i know relax yourselves this is just for pure curiousity...

As I explain in another thread, my phone's FaceID doesn't work in sunshine. A senior Apple support person suspects it's because my battery's health in 76%. Can battery degradation affect whether features work? Does this sound likely? I always thought battery degradation was only about having...

If I leave USB-powered devices plugged into my MacBook while it’s charging, will it degrade the battery? What I’m trying to figure out is if the USB devices will drain the battery and then the charger recharges the MacBook repeatedly, or do the USB devices consume power directly from the MacBook...

My AirPods were purchased late January 2017 and have had light-moderate use since then: - 30 mins each way on a commute (1h) - occasional movie at home (2h) - a weekend run (1.5h) - general listening time (2h) - occasional flights Unfortunately after 20 months the battery degredation on both...

If I set a photo as a background image from the Photos App, the quality is degraded. For eg. a super high quality 5000x3000 13MB gradient image looks color banded when done in this way. But if it's set a background image from the file itself in Finder, it's perfect. What am I doing wrong here...