1 Hardware Overview
2.0 Batteries
26
Satellite M40/M45 TECRA A4 dynabook Vx/4 Maintenance Manual
2.0 Batteries
The computer has the following three types of batteries:
Main battery pack
Real time clock (RTC) battery
Table 1-7 lists the specifications of these batteries.
Table 1- 7 Battery specifications
Battery name
Material
Output voltage
Capacity
6 Cell
Lithium Ion
10.8 V
4300 mAh
Main battery pack
12 Cell
Lithium Ion
10.8 V
8600 mAh
RTC battery
Lithium Ion
3.0 V
7 mAh
1.1.1 Main
Battery
The main battery pack serves as the computer's main power source when the AC adapter
is not attached. The main battery maintains the state of the computer so that it can
resume it.
1.1.2
Battery Charging Control
Battery charging is controlled by LPC 47N249. When the AC adapter and battery pack
are attached to the computer, the LPC 47N249 controls the charge on/off state and
detects a full charge.
Battery Charge
When the AC adapter is attached, the battery is charged by off-state charge when the
system is powered off or by on-state charge when it is powered on.
Summary of Contents for Dynabook Vx/4
Page 11: ...Chapter 1 Hardware Overview ...
Page 12: ...1 Hardware Overview ii Satellite M40 M45 TECRA A4 dynabook Vx 4 Maintenance Manual ...
Page 71: ...Chapter 3 Diagnostic Programs ...
Page 74: ......
Page 142: ...Chapter 4 Replacement Procedures 4 1 ...
Page 143: ...4 Replacement Procedures 4 ii Satellite M40 M45 TECRA A4 dynabook Vx 4 Maintenance Manual ...
Page 149: ......
Page 213: ...6000 1 次 Appendices ...
Page 214: ...Appendices App ii Satellite M40 M45 TECRA A4 dynabook VX 4 Maintenance Manual ...
Page 217: ...Appendices Satellite M40 M45 TECRA A4 dynabooK VX 4 Maintenance Manual App v ...