T2150 Series
1.10 Batteries
The T2150 series has three types of batteries:
❑ Main battery pack
❑ Backup battery
❑ Real Time Clock (RTC) battery
These battery specifications are described in table 1-9.
Table 1-9 Battery specifications
Battery name Material Output voltage Capacity
Main battery Nickel Metal Hydride 12 V 2,600 mAH
Backup battery Nickel Metal Hydride 7.2 V 120 mAH
RTC battery Lithium-Vanadium 3.0 V 50 mAH
1.10.1 Main Battery
The removable main battery pack is the computer’s main power source when the AC power
cord 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.
❑ Battery Indicator
The Battery indicator is located on the front of the T2150 series. The indicator shows
the status of the removable battery pack.
The status of each can be determined by color:
Orange The battery is being charged. (AC power cord is attached.)
Green The battery is fully charged. (AC power cord is attached.)
Blink orange The battery is low when the power is on.
No light Under any other conditions, the LED does not light.
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