My MacBook Pro 13" 2012 powers off when unplugged

Question

Level 1

5 points

My MacBook Pro 13" 2012 powers off when unplugged

If I unplug my MacBook it dies immediately however if I turn it on while unplugged I can plug it in and out. Also, to turn on while unplugged I have to hold in power button and from then on the power button doesn't work to put it to sleep etc. I recently replaced the battery with an oem replacement as I thought that was where the fault lied but it persists. I was also getting very high kernel_task in activity monitor until I followed this guide. https://www.davidschlachter.com/misc/kernel_task

System Information:

Battery Information:

Model Information:

Serial Number: D861015004NDGDL3T

Manufacturer: Aaweal

Device Name: bq20z451

Pack Lot Code: 0

PCB Lot Code: 0

Firmware Version: 74

Hardware Revision: 00aa

Cell Revision: 2

Charge Information:

Charge Remaining (mAh): 4543

Fully Charged: No

Charging: Yes

Full Charge Capacity (mAh): 6074

Health Information:

Cycle Count: 2

Condition: Normal

Battery Installed: Yes

Amperage (mA): 1370

Voltage (mV): 12403

System Power Settings:

AC Power:

System Sleep Timer (Minutes): 10

Disk Sleep Timer (Minutes): 10

Display Sleep Timer (Minutes): 10

Wake on AC Change: No

Wake on Clamshell Open: Yes

Wake on LAN: Yes

Current Power Source: Yes

Display Sleep Uses Dim: Yes

PrioritizeNetworkReachabilityOverSleep: 0

Battery Power:

System Sleep Timer (Minutes): 10

Disk Sleep Timer (Minutes): 10

Display Sleep Timer (Minutes): 2

Wake on AC Change: No

Wake on Clamshell Open: Yes

Display Sleep Uses Dim: Yes

Reduce Brightness: Yes

Hardware Configuration:

UPS Installed: No

AC Charger Information:

Connected: Yes

ID: 0x0000

Revision: 0x0000

Family: 0x0000

Serial Number: 0x00000000

Charging: Yes

Battery Information:

Model Information:

AC Power:

System Sleep Timer (Minutes): 10

Disk Sleep Timer (Minutes): 10

Display Sleep Timer (Minutes): 10

Wake on AC Change: No

Wake on Clamshell Open: Yes

Wake on LAN: Yes

Current Power Source: Yes

Display Sleep Uses Dim: Yes

PrioritizeNetworkReachabilityOverSleep: 0

Battery Power:

System Sleep Timer (Minutes): 10

Disk Sleep Timer (Minutes): 10

Display Sleep Timer (Minutes): 2

Wake on AC Change: No

Wake on Clamshell Open: Yes

Display Sleep Uses Dim: Yes

Reduce Brightness: Yes

Hardware Configuration:

UPS Installed: No

AC Charger Information:

Connected: Yes

ID: 0x0000

Revision: 0x0000

Family: 0x0000

Serial Number: 0x00000000

Charging: Yes

MacBook Pro, macOS High Sierra (10.13.1)

Posted on Nov 18, 2017 6:16 AM

Reply

Answer 1

colum dublin Author

Level 1

5 points

Nov 18, 2017 7:50 AM in response to tjk

I’ve tried that.

Oddly it works fine when plugged in, aside from shutting down when unplugged, but when on battery there’s is excessive fans.

If I remove the battery altogether it worked perfect even without the kernel task fix

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Answer 2

colum dublin Author

Level 1

5 points

Nov 18, 2017 8:49 AM in response to tjk

I have done and it comes back as a 4BAT error. The only thing is this is the third battery I have put in it so I think it must be something else. Coconut battery is reporting the battery as good too.

Im running an extended test at the moment so I'll see if it throws anything else up.

Thanks

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Answer 3

Allan Jones

Level 9

68,606 points

Nov 18, 2017 9:44 AM in response to colum dublin

It was sold to me as one. It says designed by Apple in California and assembled in China on it

There are many counterfeits out there. If this is your third, stop buying from your sources. Historically, auction sites are where most of the fakes seem to appear. If you bought from eBay, report the vendor.

How can you tell it is a counterfeit? Easy--Apple never sold batteries for models with "built-in" batteries like yours as a retail service part. if it is in Apple retail packaging, its a fake.

If your MBP is the mid-2012 13-inch non-Retina, it was not discontinued until October 2016 and therefore Apple will still work on it per its policy to maintain parts and service for five years from date last production. If you want a battery that works get Apple to do it. However, your attempts at self-service may mean they can refuse to work on it. Still, worth a try.

If you insist on an aftermarket battery, the only ones that get any decent reports around here are those from OWC (macsales.com) and those branded "Anker."

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