1 Hardware Overview

1.6 Batteries

1.6 Batteries

The computer has the following 3 types of batteries:

Main Battery Pack

Real Time Clock (RTC) Battery

Table 1-3 lists the specifications of these batteries.

Table 1-3 Battery Specifications

Battery Type

 

Material

Output voltage

Capacity

 

 

 

 

 

Main Battery Pack

6 Cell

Lithium Ion

10.8 V

5600 mAh

5800 mAh

 

 

 

 

 

 

 

 

 

RTC Battery

 

Lithium Ion

3.0 V

14 mAh

 

 

 

 

 

1.6.1Main 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.

1.6.2Battery Charging Control

Battery charging is controlled by TI BQ24721C. When AC adapter and battery pack are attached to the computer, the BQ24721C 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.

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Satellite/E200/E205 Maintenance Manual

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Toshiba E205 manual Hardware Overview Batteries, Main Battery, Battery Charging Control