HP 13 manual Using battery power, Testing an AC adapter, Identifying batteries

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Testing an AC adapter

Test the AC adapter if the computer exhibits any of the following symptoms when it is connected to AC power:

●The computer will not turn on.

●The display does not turn on.

●The power light is off.

To test the AC adapter:

1.Remove the battery from the computer.

2.Connect the AC adapter to the computer, and then plug it into an AC outlet.

3.Turn on the computer.

●If the power light turns on, the AC adapter is working properly.

●If the power light remains off, the AC adapter is not functioning and should be replaced.

Contact technical support for information on obtaining a replacement AC power adapter. Select Start > Help and Support > Get assistance.

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

NOTE: The display brightness is decreased to save battery life when you disconnect AC power. To increase display brightness, press the increase screen brightness key or reconnect the AC adapter.

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.

Identifying batteries

The computer can support 2 batteries:

●One lithium-ion primary battery is included with the computer and is installed at the factory.

●An optional accessory battery (purchased separately) can be attached to the bottom of the computer in addition to the primary battery.

44 Chapter 6 Power management

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Contents HP Envy 13 User Guide Product notice Safety warning notice Iv Safety warning notice Table of contents Pointing devices and keyboard Power management Drives and external devices Appendix B Backup and recovery Page Top components Identifying hardwareComponents TouchPadTouchPad buttons DescriptionLights Component DescriptionButton Front components KeysRight-side components Left-side componentsBottom components Wireless antennas Display componentsAdditional hardware components Labels Using HP QuickWeb software select models only Wireless and local area network Using wireless devicesIdentifying wireless and network status icons Using the wireless controls Using the wireless keyUsing a Wlan Using Wireless Assistant softwareUsing operating system controls Setting up a Wlan Protecting your WlanConnecting to a Wlan Use a wireless transmitter with built-in securityUsing the Voodoo Power Adapter select models only Roaming to another networkConnecting the adapter Identifying the adapter componentsTroubleshooting the Voodoo Power Adapter Bluetooth and Internet Connection Sharing ICS Using Bluetooth wireless devicesTroubleshooting wireless connection problems Cannot connect to a preferred networkNetwork icon for Wlan is not displayed Current Wlan network security codes are unavailableConnecting to a local area network LAN Cannot connect to the wireless routerWlan connection is very weak Using the TouchPad Using pointing devicesSetting pointing device preferences Using TouchPad gesturesScrolling Using the action keys Icon DescriptionUsing the hotkeys Cleaning the TouchPad and keyboard Hotkey DescriptionPage Multimedia features Adjusting the volumeMultimedia Using the media activity keys Multimedia softwareUsing HP MediaSmart software Using multimedia softwareInstalling multimedia software from a disc Connecting external audio devices AudioChecking your audio functions Using Beats Audio Select Start All Programs Accessories Sound RecorderConnecting an external monitor or projector VideoIdentifying Beats Audio icons Connecting an Hdmi device Configuring audio for Hdmi WebcamAdjusting webcam properties Webcam tipsPage Using power-saving states Power managementSetting power devices Initiating and exiting SleepConserving power Using the battery meterInitiating and exiting Hibernation Selecting a different power plan Using power plansViewing the current power plan Customizing power plansUsing external AC power Setting password protection on wakeupConnecting AC power Using battery power Testing an AC adapterIdentifying batteries Displaying the remaining battery charge Finding battery information in Help and SupportUsing Battery Check Removing or inserting the primary batteryCharging a battery Maximizing battery discharge time Managing low battery levelsIdentifying low battery levels Page Using the accessory battery select models only Resolving a low battery levelIdentifying the accessory battery components Inserting or removing an accessory batteryPage Calibrating a battery Battery charging and discharging sequenceReplacing the battery Storing a batteryDisposing of a used battery Shutting down the computerClick Shut down Drives Identifying installed drivesDrives and external devices Handling drivesUsing Disk Cleanup Identifying HP ProtectSmart Hard Drive Protection statusManaging power with a parked hard drive Using HP ProtectSmart Hard Drive Protection softwareUsing external drives Using the external optical drive select models onlyConnecting optional external drives Removing an optical disc when the disc tray will not open Sharing optical drivesUsing a USB device Connecting a USB deviceExternal devices Using Digital Media Slot cards Removing a USB deviceInserting a digital card Removing a digital cardPull the digital card from the slot External devices Using passwords SecurityProtecting the computer Setting passwords in Windows Setting passwords in Setup UtilityAdministrator password Managing an administrator passwordUsing antivirus software Power-on passwordUsing firewall software Installing critical security updatesInstalling an optional security cable Page Using Setup Utility Setup Utility BiosStarting Setup Utility Changing the language of Setup UtilityNavigating and selecting in Setup Utility Restoring default settings in Setup UtilityDisplaying system information System Configuration menu Setup Utility MenusExiting Setup Utility Main menuUpdating the Bios Diagnostics menuUpdating the Bios Determining the Bios version Downloading a Bios updatePage Backup and recovery Creating recovery discsBacking up your information When to create restore points Using Windows Backup and RestoreUsing system restore points Create a system restore pointPerforming a recovery Recovering from the recovery discsRestore to a previous date and time Click System Recovery in the Recovery Manager window Index USBWlan Hdmi