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5 Power management
Setting power options ......................................................................................................................... 46
Using power-saving states ................................................................................................. 46
Initiating and exiting Sleep ................................................................................ 47
Initiating and exiting Hibernation ....................................................................... 47
Using the battery meter ..................................................................................................... 48
Using power plans ............................................................................................................. 48
Viewing the current power plan ......................................................................... 48
Selecting a different power plan ........................................................................ 48
Customizing power plans .................................................................................. 48
Setting password protection on wakeup ............................................................................ 49
Using external AC power .................................................................................................................... 50
Connecting the AC adapter ............................................................................................... 51
Testing an AC adapter ....................................................................................................... 52
Using battery power ........................................................................................................................... 53
Finding battery information in Help and Support ............................................................... 53
Using Battery Check .......................................................................................................... 53
Displaying the remaining battery charge ........................................................................... 54
Inserting or removing the battery ....................................................................................... 54
Charging a battery ............................................................................................................. 55
Maximizing battery discharge time .................................................................................... 56
Managing low battery levels .............................................................................................. 56
Identifying low battery levels ............................................................................. 56
Resolving a low battery level ............................................................................. 56
Resolving a low battery level when external power is available ....... 56
Resolving a low battery level when a charged battery is
available ........................................................................................... 56
Resolving a low battery level when no power source is
available ........................................................................................... 57
Resolving a low battery level when the computer cannot exit
Hibernation ....................................................................................... 57
Calibrating a battery ........................................................................................................... 57
Step 1: Fully charge the battery ........................................................................ 57
Step 2: Disable Hibernation and Sleep ............................................................. 57
Step 3: Discharge the battery ............................................................................ 59
Step 4: Fully recharge the battery ..................................................................... 59
Step 5: Reenable Hibernation and Sleep .......................................................... 60
Conserving battery power .................................................................................................. 60
Storing a battery ................................................................................................................ 60
Disposing of a used battery ............................................................................................... 61
Replacing the battery ......................................................................................................... 61
Switching between graphics modes (select models only) .................................................................. 62
Shutting down the computer ............................................................................................................... 63
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