Toshiba T1900 Series - Battery Types and Specifications; Main Battery Operation

1.9 Batteries
The T19001T1900C has three types of batteries:
o Main battery pack
o Backup battery
o Real Time Clock (RTC) battery
Specifications for these batteries are described in Table 1-8.
Table 1-8 Battery Specifications
Battery Name
Material
Output Voltage
Capacity
Main battery
Nickel Metal Hydride
12V
2,400mAH
Backup battery
Nickel Metal Hydride
1.2V
1,100 mAH
RTC battery
Lithium-Vanadium
3.0 V
50mAH
1.9.1 Main Battery
The removable main battery pack is the computer's main power source when the AC adapter
is not attached. The main battery recharges the backup battery when the system's power is
on. The backup and main battery maintain the state of the computer when you enable
AutoResume, and they maintain the information in Hard RAM.
Q Battery Indicator
The Battery Indicator, located on the top cover of the T1900ff1900C, shows the status of the
removable battery pack, power supply and AC adapter.
The status of each can be determined by color:
Orange The battery is being charged. (AC adapter is attached.)
Green The battery is fully charged. (AC adapter is attached.)
No
light The AC adapter is disconnected from the computer, or the AC adapter is
attached but it cannot charge the battery for one of the following reasons:
o The battery is extremely hot. Allow the computer and the battery
to reach
room temperature before attempting to charge the battery.
o The battery is almost fully discharged. The battery will not begin
charging immediately in this state, it will begin charging a few
minutes after the AC adapter is connected.
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