Ancestors

Written by Stuart Langridge on 2025-01-20 at 18:01

I've got a macbook. I don't use it much, and it sits on the side desk. Yesterday I charged it to 100% (which I had to click on a thing in the menu to allow; it only wanted to go to 80%) and then afterwards unplugged it and closed the lid. Today I've just opened it and it's at 1% charge. Do they not suspend properly or something? Surely it shouldn't use battery power while the lid is closed?

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Toot

Written by L. Rhodes ⁂ on 2025-01-20 at 18:04

@sil If you haven't used it in a while, it probably tried to update the OS.

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Descendants

Written by Stuart Langridge on 2025-01-20 at 18:10

@lrhodes I'm pretty sure it's not that; it does this always, not only this one time

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Written by L. Rhodes ⁂ on 2025-01-20 at 18:13

@sil Possibly a battery issue, then. Even if some process isn't suspending properly, you shouldn't be losing full charge overnight with the screen off.

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Written by Stuart Langridge on 2025-01-20 at 18:17

@lrhodes that's what I thought! there's a picture of the battery usage graph attached elsewhere in the thread. It claims that battery health is normal, though?

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Written by L. Rhodes ⁂ on 2025-01-20 at 18:56

@sil Screen On usage is zero, so it's not that. Have you looked at Activity Monitor yet? That should show you if some particular process ate up all of your battery life.

If you're on an Intel-based machine (look under About This Mac in the system menu), you can also try zapping the NVRAM: https://www.macworld.com/article/224955/how-to-reset-a-macs-nvram-pram-and-smc.html

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Written by Stuart Langridge on 2025-01-20 at 19:08

@lrhodes I have. Activity Monitor didn't show anything that was preventing sleep or similar. I then ran the bootup diagnostics (which claimed there was no problem) and now I've restarted, when I start Activity Monitor it immediately crashes with a bad instruction error, so that's not very helpful.

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Written by L. Rhodes ⁂ on 2025-01-20 at 19:11

@sil Hmm. The bad instruction error is interesting. I'd open Disk Utility and run First Aid to make sure there isn't a corrupt file or block causing both problems.

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Written by Stuart Langridge on 2025-01-20 at 19:15

@lrhodes no problems reported by First Aid in Disk Utility!

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Written by L. Rhodes ⁂ on 2025-01-20 at 19:22

@sil Hmm, I'm out of ideas, but this certainly seems similar to your problem: https://osxdaily.com/2021/10/20/why-macbook-draining-battery-sleeping/

Good luck!

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Written by Stuart Langridge on 2025-01-20 at 19:25

@lrhodes I'll have a look; thank you!

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