HP h1935 ユーザーズマニュアル

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Managing the Battery
User’s Guide
3–7
Preserving Battery Time
Changing the Backlight Settings
To change the backlight settings in order to conserve more battery 
power:
1. From the Start menu, tap Settings > System tab > 
Backlight.
2. Select the following backlight settings:
Battery Power
External Power
Brightness