NOTE: You can use your optional Media Base to charge the computer battery when the Media Base is in standalone mode, or when the computer is docked in the Media Base. The additional power from the battery in the Media Base is available for computer usage once you dock the computer.
In addition, when your computer is connected to the Media Base or other docking device (docked), the Battery Meter window includes a Dock Battery tab, which displays the charge level and current status of the battery in the battery bay of the Media Base or other docking device.
The following icons appear in the Battery Meter window:
•The computer or docking device is running on battery power.
•The battery is discharging.
•The computer or docking device is connected to an electrical outlet and running on AC power.
•The battery is charging.
•The computer or docking device is connected to an electrical outlet and running on AC power.
•The battery is fully charged and idle.
For more information about QuickSet, 
icon in the notification area (located in the
Microsoft Windows Power Meter
The Windows Power Meter indicates the remaining battery charge. To check the Power Meter,
icon in the notification area. For more information about the Power Meter
tab, see your User’s Guide. If the computer is connected to an electrical outlet, a icon appears.
Charge Gauge
During the first 3 seconds after you press the status button on the battery charge gauge, the lights on the charge gauge indicate battery charge status. 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 life span 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.
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