1.13 Batteries
1 Hardware Overview
1.13.2
Battery Charging Control
Battery charging is controlled by a power supply microprocessor. The microprocessor
controls whether the charge is on or off and detects a full charge when the AC adaptor and
battery are attached to the computer. The system charges the battery using quick charge.
Quick Battery Charge
When the AC adaptor is attached, there are two types of quick charge: quick charge 1 when
the system is powered off and quick charge 2 when the system is powered on.
Table 1-13 Time required for quick charges
Status Charging
time
Quick charge 1 (Power off)
About 3.5 hours
Quick charge 2 (Power on)
About 7.0 to 20.0 or longer
NOTE:
The time required for quick charge 2 is affected by the amount of power the
system is consuming. Use of the fluorescent lamp and frequent disk access
diverts power and lengthens the charge time.
If any of the following occurs, the battery quick charge process stops.
1. The battery becomes fully charged.
2. The AC adaptor or battery is removed.
3. The battery or output voltage is abnormal.
Detection of full charge
A full charge is detected only when the battery is charging at quick charge. A full charge is
detected under any of the following conditions:
1. The current in the battery charging circuit drops under the predetermined limit.
2. The charging time exceeds the fixed limit.
Satellite A40 Maintenance Manual (960-458)
1-35
Summary of Contents for Satellite A40 Series
Page 10: ...x Satellite A40 Maintenance Manual 960 458 ...
Page 11: ...Chapter 1 Hardware Overview ...
Page 12: ...1 Hardware Overview 1 ii Satellite A40 Maintenance Manual 960 458 ...
Page 51: ...Chapter 2 Troubleshooting Procedures ...
Page 52: ...2 Troubleshooting Procedures 2 ii Satellite A40 Maintenance Manual 960 458 ...
Page 56: ...2 Troubleshooting Procedures 2 vi Satellite A40 Maintenance Manual 960 458 ...
Page 118: ...Chapter 3 Tests and Diagnostics ...
Page 119: ...3 Tests and Diagnostics 3 ii Satellite A40 Maintenance Manual 960 458 ...
Page 204: ...Chapter 4 Replacement Procedures ...
Page 205: ...4 Replacement Procedures 4 ii Satellite A40 Maintenance Manual 960 458 ...
Page 358: ...Appendices ...
Page 359: ...Appendices App ii Satellite A40 Maintenance Manual 960 458 ...
Page 365: ...Appendices App viii Satellite A40 Maintenance Manual 960 458 ...
Page 371: ...Appendices Appendix A Handling the LCD Module A 6 Satellite A40 Maintenance Manual 960 458 ...
Page 411: ...Appendices Appendix E Key Layout E 4 Satellite A40 Maintenance Manual 960 458 ...
Page 413: ...Appendices Appendix F Wiring Diagrams F 2 Satellite A40 Maintenance Manual 960 458 ...
Page 415: ...Appendices Appendix G BIOS Rewrite Procedures G 2 Satellite A40 Maintenance Manual 960 458 ...
Page 417: ...Appendices Appendix H EC KBC Rewrite Procedures H 2 Satellite A40 Maintenance Manual 960 458 ...
Page 419: ...Appendices Appendix I Reliability I 2 Satellite A40 Maintenance Manual 960 458 ...