Here's why it's absolutely crucial for you to get the next update for the iPhone 11
Then the figures for the maximum capacity percentage for the battery and peak performance capability will be updated. At that point, the message saying the recalibration is happening will automatically disappear.Then, carry on as you were. That’s the result in most cases. However, in what Apple says will be a small number of cases, the recalibration may not work. In that case, a new service referring to the battery will appear.
Apple recommends that once you’ve updated to iOS 14.5 that you should wait until the recalibration is done before contacting them. If your phone is still in warranty, service cover for a battery with this issue will be temporarily extended to cover the recalibration period.