2016 15” MB Pro with the same issue, installed Big Sur and my battery life went to hell and it didn’t charge at all last night. Strangely took a few days to reach this point, not immediately after install. Currently trying the SMC and PRAM resets to no avail.
Szilasi
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
Last seen
From
Holmdel, NJ, United States