Manual

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o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,o,orinsleep.Thebatteryrechargesmore
quickly,however,whenthecomputerisoorinsleep.