HP Power Management 7 Batteries

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.

Contents

Page Page Table of contents Page 1 Power control and light locations Page 2 Power sources Connecting the AC adapter 3 Standby and hibernation Standby Hibernation Initiating standby, hibernation or shutdown When you leave your work When a reliable power supply is unavailable When using wireless communication, or readable or writable media 4 Power settings Turning the computer or display on or off Using emergency shutdown procedures Initiating or resuming from standby Initiating or restoring from hibernation 5 Power options Accessing Power Options Properties Displaying the Power Meter icon Setting or changing a power scheme Setting a security prompt 6 Processor performance controls 7 Batteries Inserting or removing a battery Charging a battery Monitoring the charge of the battery Obtaining accurate charge information Displaying charge information on the screen Page Managing low-batteryconditions Identifying low-batteryconditions Low-batterycondition Critical low-batterycondition Resolving low-batteryconditions When external power is available When a charged battery is available When no power source is available When the computer cannot restore from hibernation Calibrating a battery When to calibrate How to calibrate Step 1: Charging the battery Step 2: Discharging the battery Step 3: Recharging the battery Conserving battery power Conserving power as you work Selecting power conservation settings Storing a battery Disposing of a used battery Index