Toshiba 14.1 TFT XGA LCD MODULE - TECRA S1 (V00002008006) PC Notebook

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Toshiba 14.1 TFT XGA LCD MODULE - TECRA S1 (V00002008006) PC Notebook | Manualzz

Chapter 5

Mobile Computing

Toshiba’s energy-saver design

Your computer enters a low-power mode when it is not being used, thereby conserving energy and saving money in the process. It has a number of other features that enhance its energy efficiency. Many of these energy-saving features have been set by Toshiba. We recommend you leave these features active, allowing your computer to operate at is maximum energy efficiency, so that you can use it for longer periods of time while traveling.

For more information on managing your power usage, see

“Power Saver” on page 167 .

This chapter covers all the aspects of using your computer on battery power.

Running the computer on battery power

The computer contains a removable Lithium-Ion (Li-Ion) battery pack that provides power when you are away from an

AC outlet. This is the main battery. You can recharge it many times.

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Mobile Computing

Running the computer on battery power

Battery Notice

To ensure that the battery maintains its maximum capacity, operate the computer on battery power at least once a month until the battery is fully discharged. Please see

“Maximizing battery life” on page 132 for procedures. If the computer is

continuously operated on AC power, either through an AC adapter or a docking station (if applicable to your system), for an extended period (more than a month) the battery may fail to retain a charge. This may shorten the life of the battery, and the battery light may not indicate a low-battery condition.

In addition to the main battery, you may also have a second battery installed in the Slim SelectBay. If you travel and need to work for many hours without an AC power source, you may purchase a battery module for use in the computer’s

Slim SelectBay, or carry additional charged battery packs with you.

The RTC battery powers the RTC memory that stores your system configuration settings and the current time and date information. It maintains this information for up to a month while the computer is turned off.

TECHNICAL NOTE: The RTC battery does not charge while the computer is turned off, even when AC power is attached.

Charging the batteries

To charge the main battery while it is in your computer, plug the computer into a live electrical outlet. The battery charges whether the computer is on or off.

The main battery light ( ) glows amber while the battery is being charged, and glows green when it is fully charged.

The battery may not start charging immediately under the following conditions:

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Mobile Computing

Running the computer on battery power

125

The battery is extremely hot or cold. To ensure that the battery charges to its full capacity, wait until it reaches room temperature.

The battery is almost completely discharged. Leave the power connected and the battery should begin charging after a few minutes.

Charging the RTC battery

Your computer has an internal real-time clock (RTC) battery.

The RTC battery powers the System Time Clock and BIOS memory used to store your computer’s configuration settings.

When fully charged it maintains this information for up to a month when the computer is powered off.

The RTC battery may have become completely discharged while your computer was shipped, resulting in the following error message during startup:

BAD RTC BATTERY

BAD CHECKSUM (CMOS)

CHECK SYSTEM

To recharge the RTC battery, connect the computer and leave it powered on for 24 hours.

The computer’s RTC battery is a Lithium Ion (Li-Ion) battery and should be replaced only by your dealer or by a Toshiba service representative. The battery can explode if not properly replaced, used, handled or disposed of. Dispose of the battery as required by local ordinances or regulations.

The main battery light ( ) glows amber while the battery is being charged, and glows blue when it is fully charged.

The battery may not start charging immediately under the following conditions:

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126

Mobile Computing

Running the computer on battery power

The battery is extremely hot or cold. To ensure that the battery charges to its full capacity, wait until it reaches room temperature.

The battery is almost completely discharged. Leave the power connected and the battery should begin charging after a few minutes.

Monitoring battery power

The computer’s main battery light gives you an indication of the main battery’s current charge:

Green indicates the AC adapter has fully charged the battery.

Amber indicates the AC adapter is charging the battery.

Off indicates that the battery is not being charged.

NOTE

Battery life and charge time may vary depending upon power management settings, applications and features used.

Flashing amber indicates that the computer is using battery power, and the battery’s charge is running low.

HINT: Be careful not to confuse the battery light ( ) with the on/off light ( ). When the on/off light flashes amber, it indicates that the system is suspended (using Windows ®

Standby command).

XP

Displaying remaining battery power

You can monitor the battery’s remaining charge. The computer calculates the remaining battery charge as it operates, based on your current rate of power use.

To show remaining power:

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Mobile Computing

Running the computer on battery power

127

1

Click

Start

, then

Control Panel

, and then

Performance and

Maintenance.

2

In the Control Panel window, double-click the

Toshiba

Power Saver

icon.

The Toshiba Power Saver Properties dialog box appears.

Sample Toshiba Power Saver Properties Dialog Box

The Power Save Modes tab displays the remaining amount of time for each of the different power usage modes.

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