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1 Hardware Overview 1.6 Batteries
20 Satellite/E200/E205 Maintenance Manual
1.6 Batteries
The computer has the following 3 types of batteries:
Main Battery Pack
Real Time Clock (RTC) Battery
Table 1-3 lists the specifications of these batteries.
Table 1-3 Battery Specifications
Battery Type Material Output voltage Capacity
Main Battery Pack
6 Cell Lithium Ion 10.8 V
5600 mAh
5800 mAh
RTC Battery Lithium Ion 3.0 V 14 mAh
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 so that it can
resume it.
1.6.2 Battery Charging Control
Battery charging is controlled by TI BQ24721C. Wh
en AC adapter and battery pack are
attached to the computer, the BQ24721C 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.