Lenovo ThinkPad Edge E440 - Power Management

–Height:26.3mm(1.04inches)
•ForE540models:
–Width:377mm(14.84inches)
–Depth:250mm(9.84inches)
–Height:26.6mm(1.05inches)
Heatoutput
•65W(222Btu/hr)maximumor90W(307Btu/hr)maximum(dependingonthemodel)
Powersource(acpoweradapter)
•Sine-waveinputat50to60Hz
•Inputratingoftheacpoweradapter:100to240Vac,50to60Hz
Batterypack
•Lithium-ion(Li-Ion)batterypack
Batterylife
•Forthepercentageoftheremainingbatterypower,checkthebatterystatusiconintheWindows
noticationarea.
Operatingenvironment
Thissectionprovidesinformationabouttheoperatingenvironmentofyourcomputer.
Environment:
•Maximumaltitudewithoutpressurization:3048m(10000ft)
•Temperature
–Ataltitudesupto2438m(8000ft)
–Operating:5.0°Cto35.0°C(41°Fto95°F)
–Storage:5.0°Cto43.0°C(41°Fto109°F)
–Ataltitudesabove2438m(8000ft)
–Maximumtemperaturewhenoperatingundertheunpressurizedcondition:31.3°C(88°F)
Note:Whenyouchargethebatterypack,itstemperaturemustbeatleast10°C(50°F).
•Relativehumidity:
–Operating:8%to80%
–Storage:5%to95%
Ifpossible,placeyourcomputerinawell-ventilatedanddryareawithoutdirectexposuretosunshine.
Attention:
•Keepelectricalappliancessuchasanelectricfan,radio,airconditioner,andmicrowaveovenawayfrom
thecomputer.Thestrongmagneticeldsgeneratedbytheseappliancescandamagethemonitorand
dataontheharddiskdrive.
•Donotplaceanybeveragesontopoforbesidethecomputerorotherattacheddevices.Ifliquidisspilled
onorinthecomputeroranattacheddevice,ashortcircuitorotherdamagemightoccur.
16UserGuide