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Late 2011 model, A1278 / 2.4 GHz i5 or 2.8 GHz i7 processor.

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Runnig slow on battery support

The MacBook Pro I have, gets very slow when running on battery, the cursor gets really slow.

So I’ve been reading a lot and I identified my model (MacBook8,1)

I erased the plist file in the kext file that the tutorial shows.

Then when I reset the system it gets better, so I believe that I’ve fixed the problem,

BUT, when I run Serato DJ 2.0.3 off of battery power the processor gets very high processing, and with the MagSafe connector plugged in it gets down to OK.

What can I do??

I also run the app Dan said coconutBattery and shows this:

Block Image

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First I would check the battery to see how much life is left in it. Download this great free app: CoconutBattery. Paste a screenshot of the main window so we can see it here Adding images to an existing question

I would also check the energy settings within the Energy Saver control panel to make sure the settings are correct. I would enable the show battery status in menu bar setting I would also make sure not to put the disk into sleep mode when on battery given you’re running a DJ app here. I hope you’ve got plenty of son de Cuba (Buena Vista Social Club) I love Ibrahim Ferrer’s Nuestra Ultima Cita for us older folks!

Being in Cuba it can get quite hot and humid ;-} So you may need to clean out the dust buildup inside and the fan & heat sink. You may need to also clean and apply a fresh coat of thermal paste on the heatsink. As I’m also suspecting your system may be slowing down as it’s overheating.

Here’s the IFIXIT guide you’ll need to follow: MacBook Pro 13" Unibody Late 2011 Heat Sink Replacement here we are only cleaning it.

You might want to download this app: TG Pro it will allow you to monitor your systems temps so when the system slows down you can see if it’s overheating.

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MacBook Pro 13" Unibody Late 2011 Heat Sink Replacement

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45 minutes - 1 hour
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Adding images to an existing question

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2 - 5 minutes

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No, no soy cubano, ¡me encanta la música!

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Thank you Dan, I will download the apps. I already make a clean up of the MBP and replaced the thermal paste. I love music too, but I´m not the Dj, it´s a friend of mine and the MBP is his. I´ll post the photos once I download the app, the Internet in Cuba sometimes is very slow. Thank You!

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The coconutBattery App shows status Good

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Can you paste a screenshot of the main window so I can see the other data. As the cycles and the voltages are what we need to focus on.

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could this be a problem in the SMC chip??????????????

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First Try resetting the SMC, If this doesn't work then I would suggest replacing the battery. Just make sure not to buy a cheap battery off of eBay; I would recommend the cheapest battery being $40.

I replaced my old battery with this one from Amazon.

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