1 Hardware Overview 1.6 Power Supply
22 Satellite L350D/Satellite Pro L350D/EQUIUM L350D/SATEGO L350D Maintenance Manual
1.7 Batteries
The computer has the following three 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
6 Cell Lithium Ion 10.8 V 4000 mAh
Main Battery Pack
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.