Apple M7710LL User Guide - Page 34

Running Your MacBook Air on Battery Power, Charging the Battery

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Running Your MacBook Air on Battery Power When the MagSafe Power Adapter isn't connected, your MacBook Air draws power from its built-in rechargeable battery. The length of time that you can run your MacBook Air varies, depending on the applications you use and the external devices connected to your MacBook Air. Turning off features such as AirPort Extreme or Bluetooth® wireless technology and reducing screen brightness can help conserve battery charge. Many of your system preferences are automatically set to optimize battery life. Charging the Battery You can determine whether the battery needs to be charged by looking at the indicator light on the MagSafe connector. If the light is glowing amber, the battery needs to be charged. If the light is glowing green, the battery is fully charged. You can also check the amount of battery charge left by viewing the Battery ( ) status icon in the menu bar. The battery charge level displayed is based on the amount of power left in the battery with the applications, peripheral devices, and system settings you are currently using. To conserve battery power, close applications and disconnect peripheral devices not in use, and adjust your Energy Saver settings. For more information about battery conservation and performance tips, go to www.apple.com/batteries/notebooks.html. When the power adapter that came with your MacBook Air is connected, the battery recharges whether the computer is on, off, or in sleep. The battery recharges more quickly, however, when the computer is off or in sleep. 34 Chapter 2 Life with Your MacBook Air

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34
Chapter 2
Life with Your MacBook Air
Running Your MacBook Air on Battery Power
When the MagSafe Power Adapter isn’t connected, your MacBook Air draws power
from its built-in rechargeable battery. The length of time that you can run your
MacBook Air varies, depending on the applications you use and the external devices
connected to your MacBook Air.
Turning off features such as AirPort Extreme or Bluetooth® wireless technology and
reducing screen brightness can help conserve battery charge. Many of your system
preferences are automatically set to optimize battery life.
Charging the Battery
You can determine whether the battery needs to be charged by looking at the
indicator light on the MagSafe connector. If the light is glowing amber, the battery
needs to be charged. If the light is glowing green, the battery is fully charged.
You can also check the amount of battery charge left by viewing the Battery (
)
status icon in the menu bar. The battery charge level displayed is based on the
amount of power left in the battery with the applications, peripheral devices, and
system settings you are currently using. To conserve battery power, close applications
and disconnect peripheral devices not in use, and adjust your Energy Saver settings.
For more information about battery conservation and performance tips, go to
www.apple.com/batteries/notebooks.html.
When the power adapter that came with your MacBook Air is connected, the battery
recharges whether the computer is on, off, or in sleep. The battery recharges more
quickly, however, when the computer is off or in sleep.