Manuals

AC Adapter and Battery: Dell Latitude C810 User's Guide

AC Adapter and Battery: Dell™ Latitude™ C810 User's Guide

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	About the AC Adapter		Checking the Battery Charge
	Connecting the AC Adapter		Battery Warnings
	About the Batteries		Charging the Battery
	Removing a Battery		Detecting Battery Problems
	Installing a Battery		Battery Disposal

About the AC Adapter

You can connect the AC adapter with your computer either turned on or off.
The AC adapter works with electrical outlets worldwide. However, power connectors vary among countries. Before you use AC power in a foreign country, you may need to obtain a new power cable designed for use in that country.
If the computer is connected to a Dell docking device, you can run the computer on AC power by connecting the AC adapter to the docking device.

NOTE: If you are running your computer on AC power with a battery installed, the AC adapter charges the battery (if needed) and then maintains the battery's charge.

NOTICE: To avoid overheating the AC adapter when powering the computer or charging the battery, use the AC adapter in a ventilated area, such as on a desktop or on the floor. Do not use the AC adapter in a poorly ventilated environment, such as inside a carrying case.

Connecting the AC Adapter

About the Batteries

A partially charged lithium-ion battery comes standard in the battery bay, and provides power when an electrical outlet is not available. Dell recommends that you charge your battery to full capacity before using it to power the computer. For information on conserving battery power, see "Conserving Power."
To increase battery life, install a second battery in the modular bay.

CAUTION: Do not puncture, disassemble, or incinerate the computer's battery. The battery may present a fire or chemical burn hazard if mistreated. Do not expose the battery to temperatures above 60° Celsius (C) (140° Fahrenheit [F]). Keep the battery away from children. Handle damaged or leaking batteries with extreme care. If the battery is damaged, electrolyte may leak from the cells and cause personal injury.

With a single fully charged, 8-cell lithium-ion battery, you can expect about 24 hours of battery life; with two fully charged lithium-ion batteries, 48 hours of battery life. Actual performance depends on the power management features and application programs you use.
When two batteries are installed, the computer draws power from the battery with the higher capacity until both batteries are at the same charge level. Then it draws power from both. The AC adapter first charges the battery in the battery bay.
The integrated charge gauge lets you check a battery’s charge before you insert it into the computer.
The battery’s self-test capability alerts you to battery conditions such as low charge.
The battery has a life span of around 400 discharge/charge cycles, provided it is charged at normal room temperature.
When you activate standby mode, the computer can run on a fully-charged battery for approximately one week.
If you are going to store the computer, disconnect all devices and turn off the computer. Remove the battery when you store your computer for an extended period of time. A battery will drain when not in use during prolonged storage. After a long storage period, recharge the battery fully before you attempt to run your computer from the battery.
Do not dispose lithium ion batteries with common household waste products. See "Battery Disposal" for more information.
Lithium-ion batteries are longer lived than conventional batteries and do not require replacement as often. You can charge the lithium ion battery whenever you like without fear of reducing its charge capacity. You do not need to drain a lithium ion battery completely before recharging it.

Removing a Battery

NOTICE: If you choose to replace the battery with the computer in standby mode, you have up to 4 minutes to complete the battery replacement. After 4 minutes, the computer shuts down and you will lose any unsaved data.

Ensure that the computer is turned off, suspended in a power management mode, or connected to an electrical outlet.
If the computer is docked, undock it.
Close the display and turn the computer over.
Slide and hold the battery bay (or module bay) latch release on the bottom of the computer, and then remove the battery from the bay.

Installing a Battery

Slide the battery into the bay until the latch release clicks.

Checking the Battery Charge

Press the battery test button next to the lights. The number of lights that appear shows an estimate of the remaining battery charge.

Battery Charge Gauge and Test Button

Lights	Charge Remaining (%) or Description
5	81–100
4	61–80
3	41–60
2	21–40
1	1–20; recharge the battery before using it
0	Completely drained or permanent failure¹
Rapid blinking	Temporary or recoverable failure such as overheating²

¹If you install a failed battery, the light flashes amber rapidly. To purchase a new battery, call Dell or go to the Dell website at http://www.dell.com. Dispose of the old battery properly.

²Allow a hot battery to cool for several minutes before checking the charge level again.

Battery Warnings

NOTICE: When you see a low-battery warning, save your work immediately. Then replace the battery or connect your computer to an electrical outlet.

NOTICE: To avoid losing data (and possibly corrupting data areas on your hard-disk drive), save your work immediately after a second low-battery warning. Then connect your computer to an electrical outlet, or place the computer in standby mode. If the battery runs completely out of power, the computer shuts off without properly closing any open files.

Warning (If AC adapter is not attached)

Light

Remaining Battery Life

Computer Response

First low-battery

Blinking amber

About 15 minutes

If no further activity occurs, enters hibernate mode and turns off computer. If the computer has no hibernate file, enters standby mode.

Second low-battery

Steady amber

About 5 minutes

If no further activity occurs, enters hibernate mode. If there is no hibernate file, enters standby mode.

If already in standby mode when second low-battery warning occurs, enters hibernate mode immediately. If hibernate mode has been disabled, reenters standby mode.

Charging the Battery

Each time you connect the computer to an electrical outlet or install a battery in a computer that is connected to an electrical outlet, the computer checks the battery's charge. If needed, the computer uses Dell ExpressCharge technology to charge the battery.
If the computer is off and connected to an electrical outlet, ExpressCharge technology charges a fully discharged battery in about one hour. Otherwise, charge times depend on which devices you are using and which programs you are running.
The light remains steady green during charging.
The light starts blinking when the charge cycle is complete. While the light is blinking, the AC adapter provides a trickle charge to bring the battery to full capacity. The light continues to blink until you remove the battery or disconnect the computer from its electrical outlet.
If two batteries are installed in the computer, the AC adapter first charges the battery in the battery bay, then the battery in the modular bay.

NOTICE: If the battery is hot from being used in your computer or being in a hot environment, follow these precautions:

A hot battery will not charge when you connect the AC adapter to the computer. This feature is important because charging a hot battery shortens the battery’s life span and may damage the battery and the computer.
The battery is too hot to start charging if the light flashes alternately green and amber. If this occurs while the computer is connected to an electrical outlet, disconnect the computer from the outlet and allow the computer and the battery to return to room temperature. Then reconnect the computer to its electrical outlet and continue charging the battery.
If the computer is not allowed to return to room temperature, the battery stops charging before it reaches full capacity.

NOTE: You can leave the battery in the computer as long as you like. The battery's integrated circuitry prevents the battery from overcharging.

Detecting Battery Problems

To avoid installing a defective battery in your computer, check the battery's charge by pressing the battery test button. The battery gauge light will not light if the battery is completely drained. A battery problem may prevent the battery from being charged to its full potential and can lead to unpredictable operation.

Light After Installing a Battery	Problem	Action
Alternately green and amber	Battery too hot to charge	Turn off the computer, and let the battery and computer cool to room temperature.
Amber for 4 seconds after: connecting or disconnecting AC adapter or pressing the power button	Defective battery	Replace the battery. Call Dell or go to the Dell website at http://www.dell.com.
Rapidly amber	Defective battery	Replace the battery. Call Dell or go to the Dell website at http://www.dell.com

Battery Disposal

When your battery no longer holds a charge, call your local waste disposal agency or environmental agency for advice on disposing of it. To purchase a new battery, call Dell or go to the Dell website at http://www.dell.com.

CAUTION: If your battery is damaged, or if it no longer holds a charge, dispose of it promptly and properly. Do not dispose of it along with household waste. Call your local waste disposal agency or environmental agency for advice on disposing of the battery.

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