It has always been possible to change power plan settings in recent versions of the Windows operating system to save and extend battery life. There are dozens of software around that claim to improve battery life. That good news is that you no longer need to go for third-party battery-saving software as Windows 10 ships with a built-in Battery Saver feature. Battery Saver is one of the hundreds of new features introduced with Windows 10. As the title of the functionality goes, the function is designed to extend the battery time of devices running Windows 10 operating system. By default, the feature gets automatically activated when the battery level falls below 20%. And when the Battery Saver is active, you can see a small green icon on the battery icon located in the system tray to indicate that the Battery Saver feature is active. According to Microsoft, Battery Saver limits background activities to improve the battery time. Additionally, Windows Store, Calendar, and People apps do not sync. Windows 10 reduces the computer’s screen brightness by 30% to save the battery (you can turn off this under battery settings). When the Battery saver is turned on, Windows 10 doesn’t download non-critical Windows updates. Lastly, Windows 10 also blocks most of the telemetry. As mentioned above, with default settings, Battery Saver is turned on only when the battery level goes below 20%. You might want to change this default setting to 40 or 50% to improve the battery time in Windows 10. It’s important to note that Battery Saver is turned off while charging even if the battery level is below the specified percentage. Needless to say that the Battery Saver functionality is not available on computers without batteries. Quickly turn on the Battery saver in Windows 10 Step 1: Click on the battery icon in the system tray area of the taskbar to see the battery flyout. Step 2: Move the slider to the Best battery life position (extreme left) to turn on the Battery saver feature. Turn on Battery Saver in Windows 10 By default, the Battery Saver kicks in when the battery charge goes below the 20% mark. But if the feature is not getting activated automatically, you can use this method to enable the feature. Step 1: Open the Settings app. Navigate to System > Battery. Step 2: Here, in the Battery saver section, make sure that Turn battery saver on automatically if my battery falls below option is turned on. If not, select the option to turn on the Battery saver feature when the battery level falls below 20%. To turn on the Battery saver now (irrespective of the battery level), turn on Battery saver status until next charge option. To completely disable Battery Saver in Windows 10 Step 1: Navigate to Settings > System > Battery. Step 2: Here, uncheck the Turn battery saver on automatically if my battery falls below option to disable the Battery saver. To enable or disable Battery Saver in power options UPDATE: This method doesn’t work in the newest version of Windows 10. It’s possible to enable or disable Battery Saver for a particular power plan. Here is how to do it: Step 1: Type Power Options in the Start search box and then press Enter key. Power Options window can also be launched by clicking on the battery icon and then clicking Power Options. Step 2: Under Power Options window, click or tap Change plan settings link next to your desired power plan. Step 3: Click or tap Change advanced power settings to open the small Power Options dialog. Step 4: Here, expand Energy saver settings, and then expand the Charge level. Step 5: Change On battery (Percent battery charge) value to 0 to disable Battery Saver. I hope this helps you!