Можно через различные программы (кажется PowerPack).
Также можно подправить в реестре, но вот как, я не знаю.
Как изменить напоминания о разряде батареи на Асус620
Вот как.. привожу дословно..
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Pocket PC 2002 displays a low battery warning when the main battery reaches 40%, it is displayed as a bubble notification in the title bar along with a sound.
This notification is not user configurable in the settings like other notifications, here is how to make it appear so in the settings, so you can customize it for exemple to only play the sound on not display the bubble notification.
Browse to HKEY_CURRENT_USER\ControlPanel\Notifications\{A877D663-239C-47a7-9304-0D347F580408}\
Create a String value named "Default" and set its value to "Low battery warning".
Now go to Start > Settings > Personal tab > Sounds & Notifications applet > Notifications tab, select "Low battery warning" in the "Select an event" drop-down list and you can customize it...
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ежели чего не понятно, свисти..
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Pocket PC 2002 displays a low battery warning when the main battery reaches 40%, it is displayed as a bubble notification in the title bar along with a sound.
This notification is not user configurable in the settings like other notifications, here is how to make it appear so in the settings, so you can customize it for exemple to only play the sound on not display the bubble notification.
Browse to HKEY_CURRENT_USER\ControlPanel\Notifications\{A877D663-239C-47a7-9304-0D347F580408}\
Create a String value named "Default" and set its value to "Low battery warning".
Now go to Start > Settings > Personal tab > Sounds & Notifications applet > Notifications tab, select "Low battery warning" in the "Select an event" drop-down list and you can customize it...
___________________________________________________________
ежели чего не понятно, свисти..