Set a shorter duration for the screen when active

Select the Start button and then select Settings > System > Power & Sleep . Under If on battery, turn off after select a shorter duration.
Open the Power & Sleep settings

Reduce the screen brightness

Select the Start button and then select Settings > System > Display . Disable Automatically adjusts brightness when lighting changes (if displayed), then use the Change Brightness slider to set the brightness level you want.
Open the view settings

Use a dark background

Select the Start button, select Settings > Personalization > Wallpaper , and then choose a dark image or a dark solid color.
Open the background settings

Use a dark theme

Select the Start button , select Settings > Personalization > Themes > Theme Settings , and then choose a dark theme.
Open the theme settings

Let Windows change some power management settings automatically

Select the Start button and then select Settings > Update & Security > Troubleshooter> Power and then select Run Troubleshooter .

Open the troubleshooter

Set a shorter duration for the PC in sleep mode

Select the Start button and then select Settings > System > Power & Sleep . Under If running on battery, PC goes to sleep after , choose a shorter duration.
Open the Power & Sleep settings

Disconnect from a Wi-Fi network for the PC in sleep mode

Select the Start button and then select Settings > System > Power & Sleep> when the PC is in standby and disconnects from the network . Choose the Always or Managed by Windows setting instead of Never .

This option is not available on all PCs and depends on the PC hardware and manufacturer.

Close the lid

Most laptops can go to sleep mode automatically when you close the lid. To set this setting, select the Start button and then select Settings > System > Power & Sleep > additional power settings > choose lid closure .

Choose a lower Power Saving Mode

Select the battery icon on the right side of the taskbar. To reduce energy use, move the slider towards Maximum battery life .

This option is not available on all PCs and depends on the PC hardware and manufacturer.

Press the power button

Most PCs allow you to turn off the screen, shut down, or go to sleep or hibernate mode by pressing the power button.

To choose the power buttons, select the Start button and then select Settings > System > Power & Sleep > Additional Power Settings and then choose the Power buttons .

Synchronize email less frequently.

Select the Start button and then select Settings > Accounts > Email Accounts & .
Open your mail account settings &

Select the account you want to change and then select Manage > Change Mailbox Sync Settings . Under Download new emails , choose a longer interval.

Sync only the emails, calendars and contacts you want.

You don't have to sync emails, calendars or contacts.

Select the Start button and then select Settings > Accounts > Email Accounts & .

Select the account you want to change and the Manage button and then select Change sync settings . Under Sync options, turn off Email , Calendar or Contacts .

Keep the PC plugged into the mains until it is fully charged.

To check your PC's battery level, hover your mouse pointer over the battery icon on the taskbar or go to Settings > System > Battery .

Reboot the PC.

This operation sometimes fixes problems that can reduce battery life. Select the Start button, then select Power > Restart .

Turn on airplane mode if you don't need Internet, Bluetooth, or other wireless communications.

Select the Start button, then choose Settings > Network & Internet > Airplane mode and enable Airplane mode.
Open the airplane mode settings

Use Microsoft Edge for exploration.

Tests conducted indicate that when using Microsoft Edge for browsing, battery life is 36-53% longer per search than browsing with Chrome, Firefox, and Opera on Windows 10.