Maximizing battery discharge time
Battery discharge time varies, depending on the features you use while on battery power. Maximum
discharge time gradually shortens as the battery storage capacity naturally degrades.
Tips for maximizing battery discharge time:
●
Lower the brightness on the display.
●
Remove the battery from the computer when it is not being used or charged.
●
Store the battery in a cool, dry location.
●
Select the Powersave setting in Power Management.
To select the Powersave setting in Power Management:
1. Click Computer, click Control Center, and then click Power Management.
2. Under the General tab, click System Settings.
3. Under Battery Powered, select Powersave.
4. Click Finish.
Managing low battery levels
The information in this section describes the alerts and system responses set at the factory. Some low-
battery alerts and system responses can be changed using Power Management in Control Center.
Preferences set using Power Management do not affect lights.
Identifying low battery levels
When a battery that is the sole power source for the computer reaches a low battery level, the battery
light blinks.
If a low battery level is not resolved, the computer enters a critical battery level, and the battery light
continues to blink.
The computer takes the following actions for a critical battery level:
●
If Hibernation is enabled and the computer is on or in the Suspend state, the computer initiates
Hibernation.
●
If Hibernation is disabled and the computer is on or in the Suspend state, the computer remains
briefly in the Suspend state, and then shuts down and loses any unsaved information.
Resolving a low battery level
CAUTION: To reduce the risk of losing information when the computer reaches a critical battery level
and has initiated Hibernation, do not restore power until the power lights turn off.
Resolving a low battery level when external power is available
▲
Connect one of the following devices:
●
AC adapter
●
Optional expansion product or docking device (select models only)
●
Optional power adapter
36 Chapter 4 Power management
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