Home » Questions » Goods and Services [ Ask a new question ]

MacBook Pro (Mid 2012 - Model: A1278) Random Shutdown on BATTERY ONLY!

MacBook Pro (Mid 2012 - Model: A1278) Random Shutdown on BATTERY ONLY!

I have a MacBook Pro ( 13-inch - Mid 2012 - 2.9 GHz i7 - Model A1278 ) that is randomly shutting down when on battery power. So long as the MagSafe is plugged in, it operates perfectly. But if I'm on battery power, it will only be a few minutes before it blacks out. Strangely enough, if I put the MagSafe back on it will reboot on its own (without me pressing the power button) and pick up right where I left off (i.e. all my applications that were running are still there).

Asked by: Guest | Views: 80
Total answers/comments: 2
bert [Entry]

"Let's get a better look at that battery. Please download, run and post your results from Coconut Battery:



Newertech is a high quality battery.

After seeing your error code try a PRAM reset:

Here's how to reset your PRAM:

Shut down your machine. Yes, all the way down, not sleep or logging out.

Press the power button and then press command-option-p-r. ...

Hold those keys down until your Mac reboots again and you here the startup chime.

Let go of the keys and let your Mac reboot normally."
bert [Entry]

I would recommend you to remove all the unsupported applications (if you are running any) and reinstall MacOS, might help!