I generally keep my 2018 MacBook Pro plugged in and I use it casually when not plugged in throughout the day.

With light email checking in Safari throughout the day, I have gone from 35% to 13% today. This includes large jumps that decrease while the computer is closed.

Because I am aware of this problem, I tried closing the lid when not in use, also Power Nap While Using Battery is disabled.

My previous computer was a 2015 MacBook Air. I used that in a similar way and was able to use it entirely untethered from power for the entire week.

How can I diagnose battery usage for the times that the computer is closed?


  • I do also see log events from time periods when the computer should be sleeping. For example, last night the computer was not plugged in and I was sleeping but Apple and/or the NSA decided this was a good time for com.apple.telemetry to make 100+ log entries. This is discussed at MBpro - Battery drain in sleep mode - Wake Reason : EC.USBC(Maintenance) with no responses. I do not have a reason to believe this contributes significantly to my battery issue.
  • There's already a lot of answers on this site to help with battery problems & troubleshooting. Have you tried any of those yet? If so, what have you tried (so we don't ask you to repeat the same steps)? – fsb Jan 2 at 20:55
  • The macbook pro is not the same as a macbook air... also it may be still completing background tasks. – Solar Mike Jan 2 at 21:00
  • @fsb Thank you, I have added notes about the one I checked before posting this – William Entriken Jan 3 at 17:11

Your Answer

By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service, privacy policy and cookie policy, and that your continued use of the website is subject to these policies.

Browse other questions tagged or ask your own question.