Using a battery, Battery is running out of charge, Battery performance – Dell LATITUDE D400 User Manual
Page 64: Checking the battery charge
Using a Battery
Battery Performance
NOTE:
Batteries for portable computers are covered only during the initial one-year period of the limited warranty for
your computer. For more information about the Dell warranty for your computer, see the System Information Guide or
other documents that came with your computer.
For optimal computer performance and to help preserve BIOS settings, operate your Dell™ portable computer with the main
battery installed at all times. Use the battery to run the computer when it is not connected to an electrical outlet. One battery
is supplied as standard equipment in the battery bay.
Battery operating time varies depending on operating conditions. Operating time is significantly reduced when you perform
operations including, but not limited to, the following:
NOTE:
It is recommended that you connect your computer to an electrical outlet when writing to a CD.
Using optical drives, especially DVD and CD-RW drives
Using wireless communications devices, PC Cards, or USB devices
Using high-brightness display settings, 3D screen savers, or other power-intensive programs such as 3D games
Running the computer in
You can
into the computer. You can also set power management
CAUTION:
Using an incompatible battery may increase the risk of fire or explosion. Replace the battery
only with a compatible battery purchased from Dell. The lithium-ion battery is designed to work with your
Dell™ computer. Do not use batteries from other computers with your computer.
CAUTION:
Do not dispose of batteries with household waste. When your battery no longer holds a charge,
call your local waste disposal or environmental agency for advice on disposing of a lithium-ion battery.
See the battery disposal instructions in your System Information Guide.
CAUTION:
Misuse of the battery may increase the risk of fire or chemical burn. Do not puncture,
incinerate, disassemble, or expose the battery to temperatures above 65°C (149°F). Keep the battery
away from children. Handle damaged or leaking batteries with extreme care. Damaged batteries may leak
and cause personal injury or equipment damage.
Checking the Battery Charge
The Microsoft® Windows® power meter window and
icon, the battery charge gauge and health gauge, and the low-
battery warning provide information on the battery charge.