>> Set the screen brightness to the lowest level that you can use.
>>
Switch off Bluetooth and
Wi-Fi if they are not needed. Many time it is kept on by user without any use which result in more power consumption.
>> Always close all running application and processes that is not being used (Ctrl+Alt+Del to open Task Manager then click on processes tag and End the unwanted processes)
>> Switch to Portable/Laptop or Max Battery profile using the Windows Power Management settings (Start -> Control Panel -> Power Options)
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