Toshiba Tecra A2-S239 Maintenance Manual - Page 45

1.13 Batteries 1 Hardware Overview 1.13.2 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. q 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 or in suspend mode. Table 1-13 shows the time required for charges of main battery. Table 1-13 Time required for charges of main battery Condition Normal charge 3cell 6cell 12cell Quick charge 3cell 6cell 12cell Charging Time About 3.0 to 6.0 hours or longer About 5.0 to 11.0 hours or longer About 10.5 to 21.5 hours or longer About 2.5 hours About 2.5 hours About 4.5 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 Satellite A50/TECRA A 2 Maintenance Manual (960-478 ) 1-31