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Why does my MacBook pro turn off when I unplug the charger?
A common cause of this problem is due to leaving your computer plugged in a lot of the time. This can cause the System Management Controller (SMC) to believe the power level is below a set threshold resulting in it triggering the computer to go into deep sleep mode and shutting off when unplugged.
Why does my Mac shut down at 30 Battery?
It’s mostly a MacBook battery problem. You need to calibrate your battery properly or replace your battery to fix the random shutdown during a 40% charge or 30% battery charge. For that, you have to reset the SMC.
Why does my MacBook shut down while it has still power?
As to why your system is shutting down while it has still lots of power is often a messed up SMC. What happens it the SMC holds a high and low watermark (the batteries charge) so it can go into power save mode so you don’t loose what you are working on.
What should I do if my MacBook charger is disconnected?
That way the setpoint is memorized correctly. The other method is disconnecting the Battery and pressing the Power button for 15 sec’s to fully discharge the logic board, then plug in the battery and MagSafe. The system should restart on its own. And lastly, check your battery!
What to do when MacBook Pro turns off when unplugged?
Another option to try and resolve this issue is to reset the PRAM on your MacBook Pro. Do this by following the steps below: Shut down your computer. Press the power button to turn back on. Hold down the Option, Command, P, and R keys all at the same time.
What to do when your Mac mini shuts down?
Reset the SMC on a Mac Mini, iMac, or Mac Pro: Step 1: Select the Shut Down Option from the Apple Menu. Step 2: Hold or long-press the power button for up to 10-15 seconds. Step 3: Now, release the power button and wait for a few seconds before you turn on your computer again.