![]() ![]() ![]() From Apple menu go to “System Preferences” and choose “Battery”.Turning this off may resolve some battery draining while sleeping issues, particularly if you get a lot of emails and notifications. Some MacBook Pro and MacBook Air laptops support a feature called Power Nap, which allows the Mac to check email and get notifications while it should be asleep. If you a specific application is preventing sleep, simply quitting the app usually resolves the problem.įor example, sometimes the OpenEmu emulator will prevent sleep on a Mac, so if that app is open and running you may not be able to actually put the Mac to sleep, as you see in the screenshot above.Ĭommand line processes like caffeinate are designed to prevent sleep so if you see something like that running, that’s certainly the cause. Now you can sort by “Preventing Sleep” to see what, if any, processes or apps are preventing the Mac from sleeping.Pull down the “View” menu and go to “Columns” and check the “Preventing Sleep” column on. ![]() ![]() Open Activity Monitor from Spotlight by hitting Command+Spacebar then typing ‘Activity Monitor’ and hitting return.You can use the command line and pmset to figure this out, or Activity Monitor, which easier for most users. Some apps and command line tools specifically prevent sleep, so determining which and why is important. Let’s look into this with a variety of troubleshooting tricks. Or, a feature called Power Nap is turned on the Mac laptop. Usually this happens because the Mac is not actually sleeping, the screen is just off, or the Mac is being woken up. The screenshot above demonstrates this in a severe case, where a MacBook Air drained the entire battery when not in use.įixing MacBook Pro / Air Battery Draining When Sleeping When you see the battery level drop but the ‘Screen On Usage’ is nonexistent, you know the battery is draining when the Mac is not in use. A simple way to diagnose this issue is by going to Apple menu > System Preferences > Battery, then choosing “Usage History”. ![]()
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