Acer TravelMate 6231 - Manual (Page 21)

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3 Click "Apply" to save your new settings.
To delete a power plan:
You cannot delete the power plan you are currently using. If you want to delete
the active power plan, switch to another one first.
1
Select the power plan you wish to delete from the drop-down list.
2 Click the Delete Power Plan icon.
Battery status
For real-time battery life estimates based on current usage, refer to the panel in
the upper half of the window. Click the to view estimated battery life in
sleep and hibernate modes.