Adjusting webcam properties ............................................................................................. 37
6 Power management
Setting power devices ........................................................................................................................ 39
Using power-saving states ................................................................................................. 39
Initiating and exiting Sleep ................................................................................ 39
Initiating and exiting Hibernation ....................................................................... 40
Conserving power .............................................................................................................. 40
Using the battery meter ..................................................................................................... 40
Using power plans ............................................................................................................. 41
Viewing the current power plan ......................................................................... 41
Selecting a different power plan ........................................................................ 41
Customizing power plans .................................................................................. 41
Setting password protection on wakeup ............................................................................ 42
Using external AC power .................................................................................................................... 42
Connecting AC power ........................................................................................................ 43
Testing an AC adapter ....................................................................................................... 44
Using battery power ........................................................................................................................... 44
Identifying batteries ............................................................................................................ 44
Finding battery information in Help and Support ............................................................... 45
Using Battery Check .......................................................................................................... 45
Displaying the remaining battery charge ........................................................................... 45
Removing or inserting the primary battery ......................................................................... 45
Charging a battery ............................................................................................................. 46
Maximizing battery discharge time .................................................................................... 47
Managing low battery levels .............................................................................................. 47
Identifying low battery levels ............................................................................. 47
Resolving a low battery level ............................................................................. 49
Resolving a low battery level when external power is available ....... 49
Resolving a low battery level when a charged battery is
available ........................................................................................... 49
Resolving a low battery level when no power source is
available ........................................................................................... 49
Resolving a low battery level when the computer cannot exit
Hibernation ....................................................................................... 49
Using the accessory battery (select models only) ............................................................. 49
Identifying the accessory battery components .................................................. 50
Inserting or removing an accessory battery ...................................................... 50
Battery charging and discharging sequence ..................................................... 52
Calibrating a battery ........................................................................................................... 52
Storing a battery ................................................................................................................ 53
Disposing of a used battery ............................................................................................... 53
Replacing the battery ......................................................................................................... 53
Shutting down the computer ............................................................................................................... 53
vii
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