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Some users have reported that, after upgrading to macOS Big Sur, their Mac’s batteries have been draining very quickly. When experiencing this problem, the battery may drain from full charge in less than a couple of hours. Users experiencing this problem also note that the computer gets very warm and the fan runs loudly and continually.
Reports of new macOS installs draining battery are not a new thing – we saw them in Mohave and Catalina too. There are, however, many different problems that can cause battery issues. In this article we will take you through some steps to identify and troubleshoot the issue.
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First of all, after upgrading to a new macOS version, many things will need to take place in the background, even after it appears to you that the installation has finished. These processes can sometimes take a day or two to complete. If you have recently installed macOS Big Sur, you may want to wait a couple of days to see if your battery life returns to normal. If you spend too much time and fiddle with too many things trying to resolve the issue, the process may take longer.
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RebootTo try and resolve your battery issues, first try rebooting your Mac.
See also: How to Free Up Storage Space on your Mac
Check Activity MonitorYou may want to look for processes that are consuming a lot of resources. Sometimes there is just one process responsible for all of your problems. In order to see what’s going on with processes on your computer, take a look at Activity Monitor.
Spotlight Search IndexingOne of the things that can take a while to complete after upgrading to a new macOS is indexing by Spotlight search. Spotlight can help you find apps, documents and other files on your Mac.
If you see that chúng tôi is using a large percent of your CPU, you have a few choices:
See also: Spotlight not Working?
Other ProcessesSee also: How to Back Up your Mac with Time Machine
Reset NVRAM and PRAM
Shutdown your Mac.
Power on your Mac and immediately press and hold 4 keys: Option, Command, P and R. Hold for 20 seconds, then release.
Reset the SMC
To reset the SMC, Shutdown/power off your MacBook.
Press and hold 3 keys: Shift, Control and Option.
Press and hold the power button, without releasing the other 3 keys.
Hold all keys for 10 seconds, then release.
Press the power button on your Mac.
Boot into Safe ModeBooting into safe mode will automatically run a disk check on your Mac.
Note: Your Mac will be shutdown in the middle of these steps, so either print, write down or follow these instructions from your phone.
See also: How To Know If Your Mac Is Started In Safe Mode
Go to the Apple menu in the top-left corner of the menu bar at the top of your screen. Choose Shutdown.
Wait 10 seconds, then press the power button.
Immediately after your Mac starts up, press and hold the Shift key.
Release the Shift key when the gray Apple logo and progress indicator appear.
After you are booted up in safe mode, restart your Mac by going to the Apple menu, and selecting Restart.
MacBook Battery HelpTo more directly investigate your Mac’s battery, you can take a look at it’s health.
If you see Service Recommended, then you should take your Mac to an Apple Store or authorized service provider for evaluation.
You can also try using Apple Diagnostics to test your Mac for hardware issues.
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