To begin the second reboot, select Restart from the Apple menu.
Unfortunately, just rebooting your Mac might not solve the problem.
As we previously noted: “A properly-calibrated and battery will help you keep tabs on your power source and prevent the annoyance of having your computer not give you a warning before it goes to sleep or telling you that it has a few minutes left when it could easily go for another few hours.
After a successful calibration, your Mac Book’s battery meter will be a lot more accurate.”If your Mac continues to shut down randomly even after using the troubleshooting tools mentioned above, it’s time to visit an Apple retail store, or an approved service center.
And if you never knew or can't remember the old method, then let us review.The less you need to charge your battery, the longer the battery should last and the healthier your computer can remain.Conversely, applications that are consistent battery hogs can cause long-term damage to your investment.You’re working on an important assignment in Microsoft Word, or you’re surfing the web and your Mac shuts down randomly.Most of the time, this never happens again, or at least not too often.You can learn much more about your Mac’s battery by using a third-party application such as Checking your battery’s temperature is also very important.