Toshiba EQUIUM L300D Manual

A SERVICE OF

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1.6PowerSupply 1HardwareOverview

SatelliteL300D/L305D/SatelliteProL300D/EQUIUML300D/SATEGOL300DMaintenanceManual 21

1.7Batteries

Thecomputerhasthefollowingfourtypesofbatteries:

 MainBatteryPack

 RealTimeClock(RTC)Battery

Table1-4liststhespecificationsofthesebatteries.

Table1-4BatterySpecifications

Battery Type Material

Output

Voltage

Capacity

MainBatteryPack

3 Cell Lithium Ion 10.8 V 2000 mAh

6 Cell Lithium Ion 10.8 V 4000 mAh

9 Cell Lithium Ion 10.8 V 6000 mAh

RTC Battery Lithium Ion 3.0 V 14 mAh



1.1.1 MainBattery

Themainbatterypackservesasthecomputer'smainpowersourcewhentheACadapter

is not attached.  The main battery maintains the state of the computer so that it can

resumeit.



1.1.2 BatteryChargingControl

BatterychargingiscontrolledbyWINBONDWPCE775L.WhenACadapterandbattery

packareattachedtothecomputer,theWPCE775Lcontrolsthechargeon/offstateand

detectsafullcharge.



 BatteryCharge

WhentheACadapterisattached,thebatteryischargedbyoff-statechargewhenthe

systemispoweredofforbyon-statechargewhenitispoweredon.