Dell Precision M6300, User Manual

Page: 59 / 292

Using a Battery
59
Accessing Power Options Properties
Windows XP
C lick the Start button, point to Control Panel
→
Performance and
Maintenance , and then click Power Options
Windows Vista
• Click the Windows Vista Start button , then click the Windows Power
icon in the Notification area to display the Power icon flyout window.
• Select one of the following from the Select a Power Plan section.
• Dell Recommended
• Power Saver
• High Performance
• Any custom power plan you have created.
• To access additional power options, click More Power Options at the
bottom of the flyout.
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.
NOTE:
With Dell™ ExpressCharge™, when the computer is turned off, the AC
adapter charges a completely discharged battery to 80 percent in about 1 hour and
to 100 percent 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.
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.
book.book Page 59 Tuesday, August 28, 2007 10:20 AM