2010 Macbook Air Throttling when battery half empty

jimmysofat6864

Novice Member
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. Model is 2010 Macbook Air 2.13 Ghz and I am running High Sierra.
 
Last edited:

MacrosTheBlack

Well-known Member
Well batteries are a right pain as you’re forced to find a half decent third party one. They are very hit and miss for runtime and lifetime. Try another brand perhaps.

On the processor heat front. I take it you’ve never replaced the thermal paste?

I’d start there if not, as 11 year paste won’t be working great anymore. Use a decent paste like arctic silver. Don’t bother with anything mad like liquid metal though!

ifixit can guide you through stripping down to replace the paste. Whilst doing that, I’d also remove the fans, take them out of their casing and clean it all, including the blades. A nice soft small (never used!) paint brush is good.
 

jimmysofat6864

Novice Member
Well batteries are a right pain as you’re forced to find a half decent third party one. They are very hit and miss for runtime and lifetime. Try another brand perhaps.

On the processor heat front. I take it you’ve never replaced the thermal paste?

I’d start there if not, as 11 year paste won’t be working great anymore. Use a decent paste like arctic silver. Don’t bother with anything mad like liquid metal though!

ifixit can guide you through stripping down to replace the paste. Whilst doing that, I’d also remove the fans, take them out of their casing and clean it all, including the blades. A nice soft small (never used!) paint brush is good.
Yes the paste was replaced but the throttling persists. No throttling occurs when plugged in.
 

MacrosTheBlack

Well-known Member
I’d try a fresh install of MacOS then. If you have a spare drive to go in the Mac, test on that with a fresh OS and see if behaves.
 

The latest video from AVForums

Panasonic LZ2000, LZ1500 & LZ980 Hands-on Launch Event | No QD-OLED for 2022, new 77-inch for LZ2000
Subscribe to our YouTube channel
Support AVForums with Patreon

Top Bottom