Pixel users with Adaptive Charging enabled will now learn when their battery will be at 100%
On Pixel handsets is a feature called Adaptive Charging that first debuted on the Pixel 4 and is still around today. With Adaptive Charging enabled, Pixel users charging their handset between 9 pm and 4 am with a wake-up alarm set between 3-10 am will help increase the life span of their battery by having it charge steadily overnight to 80% and fully replenish the battery to 100% just before they wake up.
Some Pixel users are receiving Adaptive Charging notifications