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Turn off the GPS (Location Services)
Every mobile device has an integrated GPS, which is very useful. It helps us find unknown locations, restaurants and etc. However, it consumes a lot of energy and the battery will be drained in no time.
Unfortunately, many people forget to turn it off after they are done using it, and it works in the background.
Remove unnecessary home screen widgets and live wallpaper
Even though they're "sitting" in the home screen, seemingly inactive, they're consuming power. This refers to widgets that show status updates in the background, as well as the ones that just "sit" there but look pretty and animated (animated live wallpaper).
Remove all the widgets from the home screen that you don't (want to) use and avoid setting a live wallpaper.
To remove a widget from the home screen:
Press and hold the widget you want to remove -> drag it to the small thrash can or the "X" sign (on the top or on the bottom).
To change the live wallpaper:
Press and hold anywhere on the home screen until it gets smaller (or go to Settings -> Display - Wallpaper) -> tap on Wallpaper -> select one of the default wallpapers or add one by yourself.
If you need to step away from your laptop and you don't want to turn it off or put it to sleep or hibernate mode, set your display to turn off automatically, because it consumes power and drains your battery quickly.
To set your display to turn off automatically:
Start -> Control Panel (or type control panel in the start menu search box) -> (System and Security) -> Power Options -> Choose when to turn off the display (on the left side of the window) -> select the drop-down menu on the right side of Turn off the display -> Choose when the display should turn off (eg. If you set 5 minutes, that means that the display will turn off after 5 minutes of INACTIVITY) -> Save changes.
System Preferences -> Energy Saver -> move the Display sleep bar to choose when should the display turn off (eg. If you set 5 minutes, that means that the display will turn off after 5 minutes of INACTIVITY).
If you are not familiar with Windows quite well and you don't want to change settings on your own, you can use the Windows Troubleshooter. It will scan your system for common battery draining issues and automatically fix them.
To activate this tool:
Start -> Control Panel -> Troubleshooting -> View All (in the left window pane)-> Power -> wait for your problems to be automatically fixed.
The LED displays used on most modern laptops spend less energy displaying black pixels than when displaying those pixels that show colors.
To improve battery life and even make text more readable when sunlight is hitting your screen you can enable the high-contrast mode:
Hit the key combination Left Shift + Left Alt + Print Screen and click Yes when asked to confirm.
You can turn off high-contrastmode by hitting the same keys. High-contrast mode will affect your desktop and most Windows programs, including the latest versions of Internet Explorer and Mozilla Firefox. However, if you use the Chrome browser, you will need to install the Change Colors extension, which is available for free from the Chrome Web Store.
Once the extension is installed, it will show an icon in the right side of your address bar. Click that icon and select Apply override on all pages to enable high-contrast mode.
System Preferences-> Accessibility -> Displays -> Adjust the display contrast
Close messaging software and applications that use the Internet in the background
While you’re browsing the net, checking email or watching a movie, messaging apps such as Hangouts and Skype are using the Internet connection constantly, in order to update the contacts list and check if you’ve received new messages.
Also, automatic-updating applications such as Adobe, Chrome, iTunes and others may also be using the Internet connection to see if there are updates to Adobe Reader, Chrome browser or iTunes.
When you don't use Skype and other messaging applications, close them, and run them only when you need them. As for automatic-updating applications, you can disable them from starting when Windows starts in MSconfig.
To access msconfig (Windows):
Start -> Type msconfig into the Search programs and files text field -> right-click on msconfig.exe and Run as Administrator -> Select the Startup tab and untick the applications you want to disable.
On MacOS, press the Command-Option-Esc keys, to open the Force quit menu (which is an equivalent to msconfig.exe), find the messaging software and the applications and close them.