Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.


macrumors newbie
Original poster
Mar 28, 2019
Hi. Recently, my 2017 MacBookPro (Mac OS mojave v. 10.14.3) has started losing all battery charge overnight and after a few hours. I've checked all the recommended items (battery cycle (221 or something) is normal, no significant power energy drains- well, now Google Chrome-, I've lowered screen brightness- but when I go to bed, power is at 88%, and when I wake up it's at 1% and the laptop is closed, although not shut off.

Any recommendations? The laptop is losing power at an abnormal rate.

I've also done an apple diagnostic at startup (press D), and the diagnostic came back fine. Any ideas?
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.