Let’s disclose the point.

Undoubtedly, at least once you’ve come across some articles about how to save the life of your MacBook's battery. They all teach you how to reduce Mac screen brightness or quit applications that are running in the background. As a result, you are at the same knowledge stage regarding your MacBook’s battery life.

There must be more efficient methods of increasing both MacBook Air and MacBook Pro battery life.

As we know, macOS Sierra doesn’t include any dedicated features to boost battery life. However, we can recommend some proven tips that aim at decreasing battery loss.
Switch Off Spotlight Indexing
If you don’t need Spotlight Indexing at the moment, then just shut it out. Your battery will really thank you for this. Follow these steps:
  • In the upper-left corner of your screen, click the Apple icon.
  • Select System Preferences.
  • Click the Spotlight icon.
  • Click the Privacy tab.
  • In the bottom-left corner, click the ‘+’ button.
  • Choose the icon of your hard drive or frequently used folders. It prevents those locations from being searched, so please hit OK when prompted. For turning it back on, just click the ‘-’ button.
Beware of Flash
As said above, turning off some features can make a big difference for your MacBook performance. Currently, most websites discard Flash, replacing it with HTML5. However, complete uninstallation of Flash is not good, too. As a great solution, we can recommend the FlashFrozen (free) or FlashBlock ($0.99) apps. They control Flash in a specific way, so it goes off if you don’t need it, saving the life of your MacBook’s battery.
Learn How to Use Activity Monitor
You can use Activity Monitor to close the applications that drain your battery the most.

It’s not necessary to quit each running program. Some applications, such as Chrome, eat up battery power to a greater extent, whereas others don’t strain a significant amount of your battery power. Nevertheless, take a good look at apps that you are going to close in Activity Monitor. Some of the running programs are important for proper work of your system. We recommend that you consult Google and double-check the functions of each app.
Change Your Browser
Some browsers, such as Google Chrome or Mozilla Firefox, cut down on the battery life. A recent study has shown that switching to Safari can increase battery performance up to 1 hour on average and sometimes even more, depending on the case, of course. In the abovementioned study, we have tested the most popular websites and their relation to energy consumption on various browsers. Switching to Safari may be a good idea if you spend hours surfing the net.
Keep Your Apps Updated
Make a habit of visiting the Mac App Store to update your apps. Up-to-date programs greatly add to battery life. The reason is that apps which are updated to run on macOS Sierra are enhanced to work on the new OS X release. In addition, don’t forget to check if your macOS is updated, too.
Adjust Energy Saver Settings
Adjusting settings in Energy Saver can optimize battery life. Follow these steps:
  • In the upper-left corner of your screen, click the Apple icon.
  • Select System Preferences.
  • Click the Energy Saver icon.
  • Select all checkboxes that are available in this window. In addition, dim your screen to manage your battery efficiency and prolong battery power.
Reduce Power Consumption on Your Mac
If you are running low on battery, these tricks may be useful for you:

Invert colors on your desktop.
  • In the upper-left corner of your screen, click the Apple icon.
  • Select System Preferences.
  • Click the Desktop & Screen Saver icon.
  • In the pane the right, click Apple > Solid Colors.
  • Select the white color.
  • Return to the main menu of system preferences.
  • Click the Accessibility icon.
  • Select the Invert Colors checkbox.
This will put your Mac into the black & white mode.

Disable notifications.
In System Preferences, click the Notifications icon, and then choose the apps that can send you notifications.

Disable automatic check for incoming emails.
  • Launch the Mail app.
  • Open the app’s preferences.
  • On the General tab, set the Check for new messages option to Manually.

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