Apple has released supplemental updates to macOS Big Sur 11.2.1 and macOS Catalina 10.15.7 to address an issue that may prevent the battery from charging in some 2016 and 2017 MacBook Pro models.
The bug in macOS Big Sur and macOS Catalina only appear to affect some MacBook Pro 2016 and MacBook Pro 2017 models.
It is recommended that you install this supplemental update to ensure your computer won’t need to be serviced as a result of a software glitch.
Apple has also released a macOS update that prevents this issue from happening to other 2016 and 2017 MacBook Pro computers. Please update to macOS Big Sur 11.2.1 or later or install the macOS Catalina 10.15.7 supplemental update. – Apple Support