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Using battery power, Finding battery information - battery life

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Using battery power When a charged battery is in the computer and the computer is not plugged into external power, the computer runs on battery power. When the computer is plugged into external AC power, the computer runs on AC power. If the computer contains a charged battery and is running on external AC power, the computer switches to battery power if the AC adapter is disconnected from the computer. NOTE: When you disconnect AC power, the display brightness is automatically decreased to save battery life. For information on increasing or decreasing display brightness, refer to the Getting Started guide. You can keep a battery in the computer or in storage, depending on how you work. Keeping the battery in the computer whenever the computer is plugged into AC power charges the battery and also protects your work in case of a power outage. However, a battery in the computer slowly discharges when the computer is off and unplugged from external power. WARNING! To reduce potential safety issues, use only the battery provided with the computer, a replacement battery provided by HP, or a compatible battery purchased from HP. Computer battery life varies, depending on power management settings, programs running on the computer, display brightness, external devices connected to the computer, and other factors. Finding battery information Help and Support provides the following tools and information about the battery: ● Battery Check tool to test battery performance ● Information on calibration, power management, and proper care and storage to maximize battery life ● Information on battery types, specifications, life cycles, and capacity To access battery information: ▲ Select Start > Help and Support > Learn > Power Plans: Frequently Asked Questions. Using Battery Check Battery Check in Help and Support provides information on the status of the battery installed in the computer. To run Battery Check: 1. Connect the AC adapter to the computer. NOTE: The computer must be connected to external power for Battery Check to work properly. 2. Select Start > Help and Support > Troubleshoot > Power, Thermal and Mechanical. 3. Click the Power tab, and then click Battery Check. Battery Check examines the battery and its cells to see if they are functioning properly, and then reports the results of the examination. 22 Chapter 4 Power management

Section	Page
Introduction	11
Finding more information about your new computer	11
Networking (select models only)	12
Creating a wireless connection	12
Identifying wireless and network status icons	12
Turning wireless devices on or off	13
Using HP Connection Manager (select models only)	13
Using operating system controls	14
Using a WLAN (select models only)	14
Connecting to an existing WLAN	14
Setting up a new WLAN	14
Protecting your WLAN	15
Roaming to another network	16
Using HP Mobile Broadband (select models only)	16
Inserting a SIM	16
Removing a SIM	17
Using GPS (select models only)	17
Using Bluetooth wireless devices (select models only)	18
Bluetooth and Internet Connection Sharing (ICS)	18
Connecting to a wired network	18
Using a modem (select models only)	18
Connecting a modem cable	19
Connecting a country- or region-specific modem cable adapter	19
Selecting a location setting	20
Viewing the current location selection	20
Adding new locations when traveling	20
Connecting to a local area network (LAN) (select models only)	21
Multimedia	23
Using the media activity controls	23
Audio	23
Adjusting the volume	24
Checking audio functions on the computer	24
Webcam (select models only)	24
Video	25
VGA	25
DisplayPort	25
HDMI	26
Configuring audio for HDMI	27
Intel Wireless Display (select models only)	27
Using CyberLink PowerDVD (select models only)	27
Power management	28
Shutting down the computer	28
Setting power options	29
Using power-saving states	29
Initiating and exiting Sleep	29
Initiating and exiting Hibernation	29
Using the power meter	30
Using power plans	30
Viewing the current power plan	30
Selecting a different power plan	30
Customizing power plans	31
Setting password protection on wakeup	31
Using HP Power Manager (select models only)	31
Using battery power	32
Finding battery information	32
Using Battery Check	32
Displaying the remaining battery charge	33
Maximizing battery discharge time	33
Managing low battery levels	33
Identifying low battery levels	33
Resolving a low battery level	34
Resolving a low battery level when external power is available	34
Resolving a low battery level when a charged battery is available	34
Resolving a low battery level when no power source is available	34
Resolving a low battery level when the computer cannot exit Hibernation	34
Conserving battery power	34
Storing a battery	34
Disposing of a used battery	35
Replacing the battery	35
Using external AC power	35
Testing an AC adapter	36
Using HP CoolSense (select models only)	36
External cards and devices	37
Using Digital Media Slot cards (select models only)	37
Inserting a digital card	37
Removing a digital card	38
Using ExpressCards (select models only)	38
Configuring an ExpressCard	38
Inserting an ExpressCard	38
Removing an ExpressCard	39
Using smart cards (select models only)	40
Inserting a smart card	40
Removing a smart card	41
Using a USB device	41
Connecting a USB device	41
Removing a USB device	42
Using 1394 devices (select models only)	42
Connecting a 1394 device	42
Removing a 1394 device	43
Using an eSATA device (select models only)	43
Connecting an eSATA device	43
Removing an eSATA device	44
Using optional external devices	44
Using optional external drives	44
Using the expansion port (select models only)	44
Drives	46
Handling drives	46
Using hard drives	47
Improving hard drive performance	47
Using Disk Defragmenter	47
Using Disk Cleanup	47
Using HP 3D DriveGuard (select models only)	47
Identifying HP 3D DriveGuard status	48
Managing power with a parked hard drive	48
Using HP 3D DriveGuard software	48
Using optical drives (select models only)	49
Identifying the installed optical drive (select models only)	49
Inserting an optical disc	49
Tray load	49
Slot load	50
Removing an optical disc	50
Tray load	50
When the disc tray opens normally	51
When the disc tray fails to open normally	51
Slot load	52
Sharing optical drives	53
Using RAID (select models only)	53
Security	54
Protecting the computer	54
Using passwords	54
Setting passwords in Windows	55
Setting passwords in Setup Utility (BIOS)	55
Managing an administrator password	56
Entering an administrator password	56
Managing a power-on password	57
Entering a power-on password	57
Using antivirus software	57
Using firewall software	57
Installing critical security updates	58
Installing an optional security cable	58
Using the fingerprint reader (select models only)	59
Locating the fingerprint reader	59
Maintenance	60
Cleaning your computer	60
Cleaning the display	60
Cleaning the sides and cover	60
Cleaning the TouchPad and keyboard	60
Updating programs and drivers	60
Using SoftPaq Download Manager	61
Setup Utility (BIOS) and System Diagnostics	62
Using Setup Utility (BIOS)	62
Starting Setup Utility (BIOS)	62
Changing the language of Setup Utility (BIOS)	62
Navigating and selecting in Setup Utility (BIOS)	63
Displaying system information	63
Restoring factory settings in Setup Utility (BIOS)	63
Exiting Setup Utility (BIOS)	64
Updating the BIOS	64
Determining the BIOS version	64
Downloading a BIOS update	65
Using System Diagnostics	66
Traveling with the computer	67
Troubleshooting resources	69
Electrostatic Discharge	70

Match case Limit results 1 per page

Using battery power

When a charged battery is in the computer and the computer is not plugged into external power, the

computer runs on battery power. When the computer is plugged into external AC power, the

computer runs on AC power.

If the computer contains a charged battery and is running on external AC power, the computer

switches to battery power if the AC adapter is disconnected from the computer.

NOTE:

When you disconnect AC power, the display brightness is automatically decreased to save

battery life. For information on increasing or decreasing display brightness, refer to the

Getting

Started

guide.

You can keep a battery in the computer or in storage, depending on how you work. Keeping the

battery in the computer whenever the computer is plugged into AC power charges the battery and

also protects your work in case of a power outage. However, a battery in the computer slowly

discharges when the computer is off and unplugged from external power.

WARNING!

To reduce potential safety issues, use only the battery provided with the computer, a

replacement battery provided by HP, or a compatible battery purchased from HP.

Computer battery life varies, depending on power management settings, programs running on the

computer, display brightness, external devices connected to the computer, and other factors.

Finding battery information

Help and Support provides the following tools and information about the battery:

●

Battery Check tool to test battery performance

●

Information on calibration, power management, and proper care and storage to maximize battery

life

●

Information on battery types, specifications, life cycles, and capacity

To access battery information:

▲

Select

Start

Help and Support

Learn

Power Plans: Frequently Asked Questions

Using Battery Check

Battery Check in Help and Support provides information on the status of the battery installed in the

computer.

To run Battery Check:

Connect the AC adapter to the computer.

NOTE:

The computer must be connected to external power for Battery Check to work properly.

Select

Start

Help and Support

Troubleshoot

Power, Thermal and Mechanical

Click the

Power

tab, and then click

Battery Check

Battery Check examines the battery and its cells to see if they are functioning properly, and then

reports the results of the examination.

Chapter 4

Power management