Batteries; Main Battery; Battery Charging Control; Quick/Normal Charging Time - Toshiba M645-S4080 Maintenance Manual

1.6 Batteries

1.6 Batteries
The computer has the following two types of batteries:
Main Battery Pack
Real Time Clock (RTC) Battery
1.6.1

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 when the AC adapter is detached.
1.6.2

Battery Charging Control

Battery charging is controlled by EC KB926. When the AC adapter and battery pack are attached
to the computer, the EC KB926 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.
Off-State Charge
On-State Charge
Satellite M600/M640/M645/M647 Maintenance Manual
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Table 1-4

Quick/Normal Charging Time

State
6/12 Cell
6/12 Cell
1 Hardware Overview
Charge Time
About 4 hours
About 12 hours
1-17