Toshiba PROA660 manual Batteries, Main Battery, Battery Charging Control

1 Hardware Overview

1.6Batteries

The computer has the following two types of batteries:

￿Main Battery Pack

￿Real Time Clock (RTC) Battery

1.6.1Main 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.

1.6.2Battery 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.

Table 1-4	Quick/Normal Charging Time
State		Charge Time
Off-State Charge	3, 6 or 12 Cell		4 hours max
On-State Charge	3, 6 or 12 Cell		12 hours max

Satellite A660/Pro A660 Maintenance Manual 1-16