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Using a Battery
Charge Gauge
Press the status button on the battery charge gauge to illuminate the charge-level lights. Each light represents
approximately 20 percent of the total battery charge. For example, if the battery has 80 percent of its charge
remaining, four of the lights are on. If no lights appear, the battery has no charge.
Health Gauge
The battery operating time is largely determined by the number of times it is charged. After hundreds of
charge and discharge cycles, batteries lose some charge capacity, or battery health. To check the battery
health, press and hold the status button on the battery charge gauge for at least 3 seconds. If no lights
appear, the battery is in good condition, and more than 80 percent of its original charge capacity remains.
Each light represents incremental degradation. If five lights appear, less than 60 percent of the charge
capacity remains, and you should consider replacing the battery. See "Specifications" for more information
about the battery operating time.
Low-Battery Warning
NOTICE:
To avoid losing or corrupting data, save your work immediately after a low-battery warning.
Then connect the computer to an electrical outlet, or install a second battery in the module bay. If the
battery runs completely out of power, hibernate mode begins automatically.
A low-battery warning occurs when the battery charge is approximately 90 percent depleted. The computer
beeps once, indicating that minimal battery operating time remains. During that time, the speaker beeps
periodically. If two batteries are installed, the low-battery warning means that the combined charge of both
batteries is approximately 90 percent depleted. The computer enters hibernate mode when the battery charge
is at a critically low level. For more information on low-battery alarms, see
Charging the Battery
NOTE:
The AC adapter charges a completely discharged battery in approximately 1 hour with the
file://C:\Documents%20and%20Settings\rpaxman\Local%20Settings\Temp\~hhEA52.htm
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"Power
Management."
9/19/2003
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