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Chapter 1 Hardware Overview
Satellite L600D/L640D/L645D, Satellite Pro L600D/Pro L640D/Pro L645D Maintenance Manual (960-Q08)
1.7 Batteries
The PC has the following two batteries.
Main battery
Real time clock (RTC) battery
Table 1-7-1 lists the specifications for these two batteries.
Battery Name
Battery
Element
Output
Voltage
Capacity
3 Cell Li-ion 10.8v 2250mAhr
6 Cell Li-ion 10.8v 4400mAhr/4500mAhr/5600mAhr
Main
Battery
12Cell Li-ion 10.8v 9000mAhr
RTC
Battery
Coin
type
Li-ion 3.0v 14mAhr
Table 1-7-1 Battery specifications
1.7.1 Main Battery
The main battery is the primary power supply for the computer when the AC adapter is not
connected.
1.7.2 Battery Charging Control
Battery charging is controlled by a power supply microprocessor. The power supply
microprocessor controls power supply and detects a full charge when the AC adaptor and
battery are connected to the computer.
Battery Charge
When the AC adapter is connected, normal charging is used while the system is
turned on and quick charge is used while the system is turned off. Refer to the
following Table 1-7-2.
System On Charge time
Pana 3cell 2250mAhr
Sony 6cell 4400mAhr
SDI 6cell 4400mAhr
3hr can charge to full