HP Power Management manual Batteries

Page 21

7 Batteries

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, use the fn+f8 hotkey or reconnect the AC adapter.

You can keep a battery in the computer or remove and store it, depending on how you work. Keeping the battery in the computer whenever the computer is plugged into external AC power charges the battery and protects your work in case of a power outage. Note that a battery in the computer slowly discharges when the computer is turned off and not plugged into external power.

17

Image 21

Contents Power Management First Edition January Document Part Number Table of contents Index Component Description Power control and light locationsPower control and light locations Task Recommended power source Power sourcesConnecting the AC adapter Standby Standby and hibernationHibernation When you leave your work When a reliable power supply is unavailableInitiating standby, hibernation or shutdown Page Power settings Using emergency shutdown proceduresTurning the computer or display on or off Stand by Initiating or resuming from standbySelect Hibernate Initiating or restoring from hibernationAccessing Power Options Properties Power optionsClear the Always show icon on the taskbar check box Displaying the Power Meter iconSetting or changing a power scheme Setting a security prompt Processor performance controls PowerBatteries Inserting or removing a battery Monitoring the charge of the battery Charging a batteryObtaining accurate charge information Displaying charge information on the screenViewing charge displays Identifying low-battery conditions Managing low-battery conditionsLow-battery condition Critical low-battery conditionWhen external power is available Resolving low-battery conditionsWhen a charged battery is available When no power source is availableWhen to calibrate Calibrating a batteryHow to calibrate Charging the batteryDischarging the battery Recharging the battery Conserving battery power Conserving power as you workSelecting power conservation settings Storing a battery Disposing of a used battery AC adapter Index