2010 MacBook Air Throttling when battery half empty

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MacBook Air 13" Late 2010

1.86GHz or 2.13GHz Processor, 128GB or 256GB Flash Storage

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jimmysofat6864 @jimmysofat6864

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Postato: 8 nov 2021

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2010 MacBook Air Throttling when battery half empty

For some reason, my Macbook Air is throttling and not running at full performance when the battery level is under 40 ish percent. I have iStats Menu and it seems like the CPU is peaking around 140 degrees compared to the 180-190 that I normally get when I use my computer at full load at battery percentages above 40. And the fans never spin up as well. And when the battery gets under 20 percent, the temperatures max out at 120 and the fans never spin up either. And the computer runs much slower and the lag gets worse. However, the moment I plug in my computer, the lag stops immediately and then the temperatures go back up to 180-190 like usual and the fans spin up.

I thought it was a battery issue because sometimes I would get a "service battery" message that occasionally goes away. I replaced the battery but I am still experiencing the same issue. Is this normal behavior or do I need to get another battery replacement? I know that macs tend to throttle when the battery is removed.

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Install this and take a screenshot of the battery specs and upload it

coconutBattery 3.9.6 - by coconut-flavour.comhttp://coconut-flavour.com

14 nov 2021 da Ben Capehart

@beanman56 Just added it. Other sources indicate that it's the battery even though it's at full health.

28 nov 2021 da jimmysofat6864

hmmmmmmmmmm no other ideas,

sorry :/

29 nov 2021 da Ben Capehart

Lets take a look at Activity Monitor, you'll find the App in your Utilities folder in the Apps folder. Look for kernel_task under % CPU what does it show for percentage?

29 nov 2021 da Dan

@danj Sometimes it goes up to 25 or hangs at high usage but it goes back down to normal levels so I don't think that's the problem.

8 dic 2021 da jimmysofat6864

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Install this and take a screenshot of the battery specs and upload it

coconutBattery 3.9.6 - by coconut-flavour.comhttp://coconut-flavour.com — Ben Capehart
@beanman56 Just added it. Other sources indicate that it's the battery even though it's at full health. — jimmysofat6864
Lets take a look at Activity Monitor, you'll find the App in your Utilities folder in the Apps folder. Look for kernel_task under % CPU what does it show for percentage? — Dan
@danj Sometimes it goes up to 25 or hangs at high usage but it goes back down to normal levels so I don't think that's the problem. — jimmysofat6864

Dan @danj Rep: 479,2k Self employed contract worker 35 329 971 · Answer 1 · 2021-12-11T05:31:15-07:00

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Dan @danj

Rep: 479,2k

Self employed contract worker

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Postato: 11 dic 2021

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I believe Powerlogd is part of a third party application, starting to sound like you have a running hard process/memory leak issue.

At this point I would backup my important stuff and wipe the drive fully and then rebuild things, slowly re-installing from good sources the OS and basic apps unless you know what Powerlogd is part of then remove that application.

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I just checked and it appears powerlogd appears to be part of Mac OS because it shows up in system folders. This issue started because I forgot to shut down the computer before unplugging the battery. However, a clean install seemed to fix things.

17 gen 2022 da jimmysofat6864

@jimmysofat6864 - FYI: What is PowerLog?

Sorry its an adware extension! As I had suspected its not part of the OS. Sounds like you need to invest in a good anti-virus/malware program to keep this junk at bay!

18 gen 2022 da Dan

@danj it’s odd you mentioned that because when I upgraded to Catalina that process went away and then PerfPowerServices became the one that had high CPU problems after waking from sleep. I ran a Malwarebytes scan and a etrecheck report and they both came back clean. I didn’t even have any adware problems either or fake redirects as I would have noticed that.

18 gen 2022 da jimmysofat6864

@jimmysofat6864 - did you get the paid version of Malwarebytes as that would have caught it! Intego would have as well.

18 gen 2022 da Dan

@danj Well the free one should have detected it as well because they both use the same engine. The paid one only does scheduled scans and other things. Looking around people say powerlog is a virus but powerlogd is normal.

18 gen 2022 da jimmysofat6864

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