HP EliteBook 8440P User Manual page 8

5 Power management
Setting power options ......................................................................................................................... 60
Using power-saving states ................................................................................................. 60
Using the battery meter ..................................................................................................... 61
Using power plans ............................................................................................................. 61
Setting password protection on wakeup ............................................................................ 62
Using Power Assistant (select models only) ...................................................................................... 63
Starting Power Assistant .................................................................................................... 63
Using external AC power .................................................................................................................... 63
Connecting the AC adapter ............................................................................................... 64
Using battery power ........................................................................................................................... 64
Finding battery information in Help and Support ............................................................... 65
Using Battery Check .......................................................................................................... 65
Displaying the remaining battery charge ........................................................................... 65
Inserting or removing the battery ....................................................................................... 65
Charging a battery ............................................................................................................. 66
Maximizing battery discharge time .................................................................................... 67
Managing low battery levels .............................................................................................. 67
Calibrating a battery ........................................................................................................... 69
Conserving battery power .................................................................................................. 71
Storing a battery ................................................................................................................ 71
Disposing of a used battery ............................................................................................... 71
Replacing the battery ......................................................................................................... 71
Testing an AC adapter ....................................................................................................................... 73
Shutting down the computer ............................................................................................................... 73
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Initiating and exiting Sleep ................................................................................ 60
Initiating and exiting Hibernation ....................................................................... 61
Viewing the current power plan ......................................................................... 62
Selecting a different power plan ........................................................................ 62
Customizing power plans .................................................................................. 62
Identifying low battery levels ............................................................................. 68
Resolving a low battery level ............................................................................. 68
Resolving a low battery level when external power is available ....... 68
Resolving a low battery level when a charged battery is
available ........................................................................................... 68
Resolving a low battery level when no power source is
available ........................................................................................... 68
Resolving a low battery level when the computer cannot exit
Hibernation ....................................................................................... 68
Step 1: Fully charge the battery ........................................................................ 69
Step 2: Disable Hibernation and Sleep ............................................................. 69
Step 3: Discharge the battery ............................................................................ 70
Step 4: Fully recharge the battery ..................................................................... 70
Step 5: Reenable Hibernation and Sleep .......................................................... 70