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How to Calibrate the Power System of Your Mac

The battery performance of your Mac should be a priority. If the battery performance begins to lag and the charge doesn’t last for more than a short few hours, you’ll have to plug in your Mac to a power supply and sacrifice portability. Simply put, you’ll be tethered to a wall. 

Unfortunately, all batteries are going to show their age sooner or later after they’ve completed a certain number of charge cycles. Luckily, many batteries in Macs can be replaced when the original battery has exhausted its charge cycles. Most branded batteries already come with a 30% pre-charge. 

However, simply replacing the battery and installing a new one is not the answer after your MacBook battery not charging. You also have to think of calibrating your Mac’s power system. The power calibration process is going to sync your Mac’s power management system with the new battery so that – 

  • You can get the most out of your new battery
  • The new battery reaches its full lifespan 
  • The system displays the battery level accurately 

Pro tip: You can also make use of the calibration guide with your stock battery that came with your Mac. 

Calibrating the power management system is not difficult. You just have to follow the below steps after installing the new battery –

  1. Verify installation 

Switch on your Mac without connecting the power adapter to make sure that the new battery has been installed properly. If your computer starts up properly, it means that you can move on to the next step. If not, check the battery installation guide again. 

  1. Charge the new battery to 100%

Now that you know you’ve installed the battery correctly, switch off your computer and connect the power adapter. Keep your device plugged in until the light turns green on the power connector. This will indicate that the battery has been charged to 100%. 

  1. Charge for 2 more hours 

Even after the battery is 100% charges, you are advised to keep the power adapter plugged into your device for 2 more hours. You can switch on the computer and use it during this time. 

  1. Change the energy saver settings temporarily 

For this, you have to turn on your computer. Then, go to System Preferences and click on Energy Saver/Battery preferences. After that, you can set the slider of “Turn display off after:” to “Never”. 

There are some models of Mac that have 2 sliders for “display sleep” and “computer sleep”. If you have these 2 sliders on your Mac, you have to slide both to the right so that they are set to “Never”. 

You also have to uncheck “slightly dim the display while on battery power” and “put hard disks to sleep when possible”. 

  1. Unplug and drain the battery 

In this step, you have to unplug the power adapter from your computer and allow the battery to drain. You must leave your computer switched on and allow it to automatically shut down when the battery is fully drained out. 

During this time, you can use your computer. However, try not to use too many energy-draining applications and programs that will deplete the battery faster. For power system calibration, you need to focus on even and steady battery usage. 

  1. Leave your Mac unplugged and off 

Once your device has shut down automatically, you have to leave it that way for a minimum of 5 hours or overnight. This is going to make sure that your computer’s battery is drained off completely. 

  1. Charge the battery to 100% again 

The last step in the power calibration process is to again charge the battery to 100%. While you have plugged your computer into the power adapter, you can use your computer. Also, this is a good time to go back and change the Energy Saver preferences so that you get to save as much energy as possible. 

This is a seven-step guide to calibrating the power system of your Mac. After you’ve done this and followed the steps properly, the calibration process will be complete. This will allow the battery to reach its fullest charge and also reach its full lifespan. Even your system is going to display the battery level precisely and accurately. These steps can be used to recalibrate the power system every few months if you think that your Mac’s battery is not working properly. 

So, have you installed a new battery? Or, wish your Mac’s stock battery worked better? You can follow these steps for power system calibration.

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