A SERVICE OF

logo

Open as PDF
next previous
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page56.
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.