Toshiba M40 - Manual (Page 33)

1.8 Batteries 1 Hardware Overview
EQUIUM M40/M45/Satellite M40/M45 Maintenance ManuaMaintenance Manual 19
1.8 Batteries
The computer has the following three types of batteries:
‰ Main battery pack
‰ Real time clock (RTC) battery
Table 1-5 lists the specifications of these batteries.
Table 1- 5 Battery specifications
Battery name Material Output voltage Capacity
4 Cell Lithium Ion 14.4 V 2000 mAh
6 Cell Lithium Ion 10.8 V 4300 mAh
Main battery pack
8 Cell Lithium Ion 14.4 V 4300 mAh
RTC battery Lithium Ion 3.0 V 7 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 KBC 1100L. When the AC adapter and battery pack
are attached to the computer, the KBC 1100L 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.