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1.8 Batteries 1 Hardware Overview
QOSMIO G50 Maintenance Manual (960-683) [CONFIDENTIAL] 1-27
1.8.2 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 1-11.
Table 1-8 Time required for charges of main battery
Battery type Quick charge Normal charge
Battery 6cell (4,700mAh)
About 3.0 (hours)
About 3.0 to 8.0 or longer (hours)
Battery 9cell (7,050mAh)
About 3.0 (hours)
About 3.5 to10.0 or longer (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, the preservation time is as
following Table 1-12.
Table 1-9 Data preservation time
Condition preservation time
Standby About 3 days (Battery 6cell (4,700mAh)
Shutdown About 25 days (Battery 6cell (4,700mAh)
Standby About 5 days (Battery 9cell (7,050mAh)
Shutdown About 35 days (Battery 9cell (7,050mA))