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The computer runs on battery power whenever it is not plugged into external AC power. Computer
battery life varies, depending on power management settings, running programs, display brightness,
external devices connected to the computer, and other factors. 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. If the computer contains a charged battery and is running on external AC
power, the computer automatically switches to battery power if the AC adapter is disconnected on the
computer or an AC power loss occurs.
NOTE: When you disconnect AC power, the display brightness is automatically decreased to save
battery life. Select computer models can switch between graphic modes to increase battery life. For
more information, see
Hybrid Graphics (select models only) on page 45.
Finding additional battery information
HP Support Assistant provides the tools and information about the battery. To access battery
information, select the HP Support Assistant app on the Start screen, and then select Battery and
performance.
●
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:
▲
To access battery information, select the HP Support Assistant app on the Start screen, and
then select Battery and performance.
Using Battery Check
HP Support Assistant 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. To access battery information, select the HP Support Assistant app on the Start screen, and
then select Battery and performance.
Battery Check examines the battery and its cells to see if they are functioning properly, and then
reports the results of the examination.
Displaying the remaining battery charge
▲
Move the pointer over the power meter icon on the Windows desktop in the notification area, at
the far right of the taskbar.
Maximizing battery discharge time
Battery discharge time varies depending on features you use while on battery power. Maximum
discharge time gradually decreases as the battery storage capacity naturally degrades.
40 Chapter 6 Power management
- User Guide 1
- Safety warning notice 3
- Table of contents 5
- 1Welcome 11
- Finding information 12
- Finding information 3 13
- TouchPad 14
- Display 11 21
- Bottom 13 23
- 3 Connecting to a network 25
- Using a WLAN 26
- Setting up a WLAN 27
- Configuring a wireless router 27
- Protecting your WLAN 27
- Connecting to a WLAN 28
- Inserting and removing a SIM 29
- Connecting to a wired network 30
- Using pointing devices 32
- Using TouchPad Gestures 33
- Right-edge swipe 37
- Top-edge swipe 38
- Left-edge swipe 38
- Using the keyboard 39
- Using keypads 40
- Using the keyboard 31 41
- 5 Multimedia 43
- Webcam (select models only) 44
- DisplayPort 45
- 6 Power management 47
- Setting power options 48
- Using battery power 49
- Using Battery Check 50
- Managing low battery levels 51
- Conserving battery power 53
- Using external AC power 54
- Testing an AC adapter 55
- 7 External cards and devices 56
- Inserting a smart card 57
- Using a USB device 58
- Connecting a USB device 59
- Removing a USB device 59
- Handling drives 61
- Using hard drives 61
- Removing the service door 62
- Replacing the service door 62
- Removing the hard drive 63
- Installing a hard drive 64
- Using Disk Defragmenter 65
- Using Disk Cleanup 65
- Using HP 3D DriveGuard 66
- 9Security 67
- Setting passwords in Windows 68
- Setting a DriveLock password 71
- Entering a DriveLock password 72
- Changing a DriveLock password 72
- Removing DriveLock protection 72
- Using antivirus software 74
- Using firewall software 74
- 10 Maintenance 77
- Cleaning your computer 79
- Updating programs and drivers 80
- 11 Backup and recovery 82
- Performing a system recovery 83
- Using f11 recovery tools 84
- Using HP Software Setup 86
- System Diagnostics 87
- Updating the BIOS 89
- Using MultiBoot 90
- Using System Diagnostics 92
- Using System Diagnostics 83 93
- 13 Support 94
- Component 96
- (3) Serial number 96
- (4) Product number 96
- A Traveling with the computer 98
- B Troubleshooting 99
- The computer screen is blank 100
- A disc does not play 101
- C Electrostatic discharge 103
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