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30 Chapter 2 Life with Your MacBook

Using the MacBook Battery

WhentheMagSafepoweradapterisn’tconnected,yourMacBookdrawspowerfromits

built-inbattery.ThelengthoftimethatyoucanrunyourMacBookvaries,depending

ontheapplicationsyouuseandtheexternaldevicesconnectedtoyourMacBook.

TurningofeaturessuchasWi-FiorBluetooth®wirelesstechnologyandreducing

screenbrightnesscanhelpconservebatterycharge—forexample,whenyou’re

travelingbyair.Manyofyoursystempreferencesareautomaticallysettooptimize

batterylife.

Ifthebatteryrunslowwhileyou’reworking,connectyourpoweradapterandlet

thebatteryrecharge.Youcan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’re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.

Charging the Battery

WhenthepoweradapterthatcamewithyourMacBook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.

ThebatteryinyourMacBookcanbereplacedonlybyanAppleAuthorizedService

ProvideroranAppleRetailStore.

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Apple laptop_ Specifiche Pagina 30