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Maximizing battery discharge time, Managing low battery levels, Resolving a low battery level

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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 lowbattery 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

Section	Page
Features	11
Identifying hardware	11
Top components	11
TouchPad	11
Lights	12
Buttons, speakers, switches, and fingerprint reader (select models only)	13
Keys	15
Front components	16
Right-side components	16
Left-side components	17
Bottom components	19
Display	19
Wireless antennas (select models only)	20
Additional hardware components	22
Identifying the labels	22
Pointing devices and keyboard	24
Using pointing devices	24
Setting pointing device preferences	24
Connecting an external mouse	24
Using the keyboard	24
Using hotkeys	24
Initiating Sleep	25
Decreasing screen brightness	25
Increasing screen brightness	25
Switching the screen image	26
Opening the default e-mail application	26
Opening the default Web browser	26
Muting speaker sound	26
Decreasing speaker sound	26
Increasing speaker sound	26
Playing the previous track or section of an audio CD or a DVD	26
Playing, pausing, or resuming an audio CD or a DVD	26
Playing the next track or section of an audio CD or a DVD	27
Using the embedded numeric keypad	27
Enabling and disabling the embedded numeric keypad	27
Switching key functions on the embedded numeric keypad	27
Using an optional external numeric keypad	27
Cleaning the TouchPad and keyboard	27
Multimedia	29
Multimedia features	29
Identifying your multimedia components	29
Adjusting the volume	30
Multimedia software	31
Accessing your preinstalled multimedia software	32
Installing multimedia software from a disc	32
Audio	32
Connecting external audio devices	32
Checking your audio functions	33
Video	33
Connecting an external monitor or projector	33
Using the external monitor port	33
Using the HDMI port	34
Optical drive (select models only)	35
Using optical discs (CDs, DVDs, and BDs)	35
Selecting the right disc (CDs, DVDs, and BDs)	36
CD-R discs	36
CD-RW discs	36
DVD±R discs	37
DVD±RW discs	37
LightScribe DVD+R discs	37
Blu-ray Discs (BDs)	37
Playing a CD, DVD, or BD	37
Observing the copyright warning	38
Copying a CD or DVD	38
Removing an optical disc (CD, DVD, or BD)	38
The optical disc tray does not open for removal of a CD, DVD, or BD	39
Webcam	40
Power management	41
Setting power options	41
Using power-saving states	41
Initiating and exiting Suspend	41
Initiating and exiting Hibernation	41
Using the Power icon	42
Using power management	42
Viewing the current power management settings	42
Changing the current power management settings	42
Using external AC power	42
Connecting the AC adapter	43
Using battery power	43
Inserting or removing the battery	44
Charging a battery	45
Maximizing battery discharge time	46
Managing low battery levels	46
Identifying low battery levels	46
Resolving a low battery level	46
Resolving a low battery level when external power is available	46
Resolving a low battery level when a charged battery is available	47
Resolving a low battery level when no power source is available	47
Resolving a low battery level when the computer cannot exit Hibernation	47
Calibrating a battery	47
Step 1: Fully charge the battery	47
Step 2: Disable Hibernation and Suspend	48
Step 3: Discharge the battery	48
Step 4: Fully recharge the battery	48
Step 5: Reenable Hibernation and Suspend	49
Conserving battery power	49
Storing a battery	49
Disposing of a used battery	49
Replacing the battery	50
Testing an AC adapter	50
Shutting down the computer	50
Drives	52
Handling drives	52
Using external drives	52
Using optional external devices	53
Replacing the hard drive	53
External devices	67
Using a USB device	67
Connecting a USB device	67
Removing a USB device	67
Using USB legacy support	68
Using an eSATA device	68
Connecting an eSATA device	68
Stopping and removing an eSATA device	69
Using external drives	69
Using optional external devices	69
External media cards	71
Using Media Card Reader cards	71
Inserting a digital card	71
Removing a digital card	72
Using ExpressCards (select models only)	72
Configuring an ExpressCard	72
Inserting an ExpressCard	72
Removing an ExpressCard	73
Memory modules	75
Adding or replacing memory modules	75
Security	86
Protecting the computer	86
Using passwords	86
Setting passwords in the operating system	87
Setting passwords in Computer Setup	87
Setup password	87
Managing a setup password	88
Entering a setup password	88
Using Computer Setup DriveLock	88
Setting a DriveLock password	89
Entering a DriveLock password	89
Changing a DriveLock password	89
Removing DriveLock protection	90
Using Computer Setup security features	90
Securing system devices	90
Using Computer Setup stringent security	90
Setting stringent security	91
Removing stringent security	91
Viewing Computer Setup System Information	91
Using firewall software	92
Setting up automatic online updates	92
Installing a security cable	92
Computer Setup	94
Starting Computer Setup	94
Using Computer Setup	94
Navigating and selecting in Computer Setup	94
Restoring factory settings in Computer Setup	95
Computer Setup menus	95
File menu	95
Security menu	95
Diagnostics menu	96
System Configuration menu	97

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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:

Click

Computer

, click

Control Center

, and then click

Power Management

Under the

General

tab, click

System Settings

Under

Battery Powered

, select

Powersave

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

Chapter 4

Power management