1. This tutorial shows how to prolong the battery life to the device through various features and device usage tips. To begin, tap on the PC Settings Tile.
   
2. From the "PC settings" screen, tap PC and devices.
   
3. Tap Power and sleep.
   
4. Turn on auto-brightness, swipe the toggle under Adjust my screen brightness automatically.
   
5. To change the sleep time duration when in battery mode, under 'On battery power, turn off after,' tap on the Time dropdown field.
   
6. Tap the Desired interval before device goes to sleep.
   
7. To change the sleep time duration when the device is charging, under ?When plugged in, turn off after? tap the Time dropdown field.
   
8. Tap the Desired interval before device goes to sleep
   
9. When not in use, turning off Bluetooth saves battery power. To turn off Bluetooth, tap Bluetooth in the sidebar.
   
10. Swipe off the Bluetooth toggle.
    
11. Turning off WiFi also saves battery power. In the charm bar, swipe off the WiFi toggle.
    
12. While travelling and having no access to mobile or WiFi networks, the airplane mode also saves battery power. In the charm bar, swipe on Airplane Mode.
    
13. Another way to save battery life is to turn off auto-updates, to turn off auto-updates in the Windows Marketplace, swipe the toggle off.
    
14. For additional information about charging your battery, please see the 'Charge the battery' tutorial.