User Guide

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.
 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 Charging Time
Normal charge 3cell About 3.0 to 6.0 hours or longer
6cell About 5.0 to 11.0 hours or longer
12cell About 10.5 to 21.5 hours or longer
Quick charge 3cell About 2.5 hours
6cell About 2.5 hours
12cell 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 A2 Maintenance Manual (960-478) 1-31