Dell Latitude X1 - Manual (Page 10)

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 lights are on. If no lights appear, the battery
has no charge.
Low-Battery Warning
A pop-up window warns you when the battery charge is approximately 90 percent depleted. For more information about low-battery alarms, see " Power
Management ."
Charging the Battery
The AC adapter charges a completely discharged battery to 80% in about 1 hour and to 100% in approximately 2 hours when the computer is turned off.
When you connect the computer to an electrical outlet or install a battery while the computer is connected to an electrical outlet, the computer checks the
battery charge and temperature. If necessary, the AC adapter then charges the battery and maintains the battery charge.
If the battery is hot from being used in your computer or being in a hot environment, the battery may not charge when you connect the computer to an
electrical outlet.
The battery is too hot to start charging if the light flashes alternately green and orange. Disconnect the computer from the electrical outlet and allow the
computer and the battery to cool to room temperature. Then connect the computer to an electrical outlet to continue charging the battery.
For more information about resolving problems with a battery, see " Power Problems ."
Removing a Battery
1. Ensure that the computer is turned off or connected to an electrical outlet.
2. Slide and hold the battery-bay latch releases on the bottom of the computer, and then remove the battery from the bay.
NOTICE: To avoid losing or corrupting data, save your work immediately after a low-battery warning. Then connect the computer to an electrical outlet.
If the battery runs completely out of power, hibernate mode begins automatically.
NOTE: With Dell™ ExpressCharge™, when the computer is turned off, the AC adapter charges a completely discharged battery to 80% in about 1 hour
and to 100% in approximately 2 hours. Charge time is longer with the computer turned on. You can leave the battery in the computer for as long as you
like. The battery's internal circuitry prevents the battery from overcharging.
CAUTION: Before performing these procedures, disconnect the modem from the telephone wall jack.
NOTICE: If you choose to replace the battery with the computer in standby mode, you have up to 1 minute to complete the battery replacement before
the computer shuts down and loses any unsaved data.