Apple ME662LL/A Laptop User Manual


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30 Chapter 2 Life with Your MacBook Pro
Using the MacBook Pro Battery
WhentheMagSafepoweradapterisn’tconnected,yourMacBookProdrawspower
fromitsbuilt-inbattery.ThelengthoftimethatyoucanrunyourMacBookProvaries,
dependingontheapplicationsyouuseandtheexternaldevicesconnectedtoyour
MacBookPro.
TurningofeaturessuchasAirPortExtreme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.
Youcandeterminethechargeremaininginthebatterybylookingattheeightbattery
levelindicatorlightsontheleftsideofyourMacBookPro.Pressthebuttonnexttothe
lights,andthelightsglowbrieytoshowhowmuchchargeremainsinthebattery.
Important:  Ifonlyoneindicatorlightison,verylittlechargeisleft.Ifnolights
illuminate,thebatteryiscompletelydrainedandtheMacBookProwon’tstartup
unlessthepoweradapterisconnected.Pluginthepoweradaptertoletthebattery
recharge.Formoreinformationaboutbatteryindicatorlights,seepage55.
Youcanalsochecktheamountofbatterychargeremaining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.
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