Dell Latitude E5440 User's Guide download pdf (Page 17)

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 Dell ControlPoint Manager Battery Meter, the Microsoft Windows Power Meter window and the

battery meter icon, the battery charge gauge and health gauge, and the low-battery warning provide

information on the battery charge.

Dell Battery Information Utility

NOTE: The battery operating time (the time the battery can hold a charge) decreases over time.

Depending on how often the battery is used, and the conditions under which it is used, you may

need to purchase a new battery during the life of your computer.

The Dell Battery Information Utility denotes the health of your primary and secondary (if installed) battery.

Green denotes that there are no problems, while yellow and red requires your attention.

This screen also gives you more information like, if the battery installed is a Dell-branded battery, the

battery manufacturer, and the battery's serial number.

NOTE: If the battery health is rated Fair or Poor, a link to ‘order a new battery’ will appear.

Conserving Battery Power

Perform the following actions to conserve battery power:

• Connect the computer to an electrical outlet when possible because battery life is largely determined

by the number of times the battery is used and recharged.

• Place the computer in standby mode or hibernate mode when you leave the computer unattended

for long periods of time.

• Use the Power Management Wizard to select options to optimize your computer’s power usage.

These options can also be set to change when you press the power button, close the display, or press

Storing a Battery

Remove the battery when you store your computer for an extended period of time. A battery discharges

during prolonged storage. After a long storage period, recharge the battery fully before you use it.

If the computer is connected to an electrical outlet, the battery indicator light operates as follows:

• Solid green: The battery is charging.

• Flashing green: The battery is almost fully charged.

• Off: The battery is adequately charged (or external power is not available to charge the battery).

If the computer is running on a battery, the battery indicator light operates as follows:

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 83 84

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Dell Latitude E5440 User's Guide Page 17