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.

Condition                                 Charging Time
Power On Charge                 About 6 hours
Power Off Charge                About 3 hours

Charge is stopped in the following cases.
1. The main battery is fully charged
2. The main battery is removed
3. Main battery or AC adapter voltage is abnormal
4. Charging current is abnormal

Data preservation time
When turning off the power in being charged fully

Condition                       Preservation time
Standby                         About 3 days
Hibernation                    About 1 month


RTC Battery
The RTC battery provides the power supply to maintain the date, time, and other system
information in memory.
Table 1-13 lists the Time required for charges of RTC battery and data preservation time.

Condition                                                             Time
Power ON (Lights Power LED)                       About 24 hours
Data preservation tome (Full-charged)              About a month