Dell Latitude X300 - Manual (Page 23)

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 about low-battery alarms, see "
Power Management ."
Charging the Battery
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, suspended in a power management mode, or connected to an electrical outlet.
2. If the computer is connected to a media base (docked), undock it. See the documentation that came with your media base for instructions.
3. Slide the battery latch releases on the bottom of the computer and 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: The AC adapter charges a completely discharged battery in approximately 1 hour with the computer turned off. Charge time is longer with the
computer turned on. You can leave the battery in the computer 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. The
computer will shut down shortly after this.
1 battery latch release (2)