I have the same problem, I installed Big Sur and the battery dropped drastically. And I just updated the new Big Sur 11.2.2 and now my MacBook cannot ON without a power adapter. I have tried to reset PRAM and it did not work. is the only solution to change a battery? It is expensive to do that. Please help if there is another way to solve this. Thank you!
rdewi
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution
From
Indonesia