Dell Latitude X300 - Manual (Page 22)

In addition, when your computer is connected to a media base (docked), the Battery Meter window includes a Dock Battery tab, which displays the charge
level and current status of the media base battery.
The following icons appear in the Battery Meter window:
For more information about QuickSet, right-click the icon in the taskbar, and click Help.
Microsoft Windows Power Meter
The Windows Power Meter indicates the remaining battery charge. To check the Power Meter, double-click the icon on the taskbar. For more information
about the Power Meter tab, see " Power Management ."
If the computer is connected to an electrical outlet, a icon appears.
Charge Gauge
Before you insert a battery , 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 five 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
NOTE: You can use your media base to charge a computer battery. However, a battery in a media base does not power the media base or the
computer.
l The computer or media base is running on battery power.
l The battery is discharging or idle.
l The computer or media base is connected to an electrical outlet and running on AC power.
l The battery is charging.
l The computer or media base is connected to an electrical outlet and running on AC power.
l The battery is idle.