2. If your computer is operating on battery power, preserve your data by connecting the AC adapter and plugging it into an electrical outlet or by shutting down

your computer from the Start menu.

3. Remove the

main

battery.

Using your index finger, pull the options bay latch (located on the side of the computer next to the options bay) toward you. With your thumb, gently push the latch out and back

until the battery pops out. Grasp the battery firmly and slide it out of the options bay.

4. Install the new battery.

With the options bay latch released, slide the new battery into the options bay until it is flush with the computer casing. You cannot fully insert the battery into the computer unless

the options bay latch is released. Close the options bay latch by using your index finger to push it toward the front of the computer until it is flush with the computer casing. Using

your thumb, push the options bay latch in.

5. Turn on the computer.

Charging the Battery

Each time you connect the computer to AC power or install a battery in a computer that is connected to AC power, the computer checks the battery's charge and

temperature. The AC adapter then charges the battery (if necessary) and maintains the battery's charge.

If two batteries are installed in the computer, the AC adapter charges the battery in the battery bay first, and then charges the second battery in the options bay. (The

second battery is discharged first.)

The battery LED, located to the right of the display latch, appears as a blinking green light while the battery is charging.

The AC adapter needs from 2 to 3 hours (depending on whether the system is on or off) to fully charge a battery that has been completely discharged.

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

Checking a Battery's Charge Level

Use one of the following methods to check the battery's charge level:

Check the

battery charge level

The battery has a charge gauge with five charge-level indicator lights that show how much battery charge remains. Press the battery tester (a textured square on

the back of the battery) to check the charge level. Each light represents approximately 20% of the total battery charge. For example, if the battery has 80% of its

charge remaining, four of the lights come on during testing. If none of the lights come on when you press the battery tester, the battery has no charge left.

CAUTION: If only one or none of the charge-level indicator lights are lit, it indicates a critically low battery state. Do not use the

battery unless the computer is connected to AC power or unless you install a second charged battery.

A low-battery warning occurs when the battery is about 90% depleted. The speaker beeps once every 15 seconds. When you hear the low-battery warning,

only a few minutes of battery life remain. If both the main battery and the second battery are installed, the low-battery warning means that the combined charge

of both batteries is about 90 percent depleted.

CAUTION: To avoid losing data (and possibly corrupting data areas on your hard-disk drive), save your work immediately after a

low-battery warning. Then connect the computer to AC power, or install a second battery in the options bay. If the battery runs

completely out of power, the computer activates save-to-disk suspend mode.

If you are using the Microsoft

Power Management icon to open the Power Management Properties window. For more information, check the documentation that came with your

operating system.

The Windows 98 battery meter displays a battery icon that shows the amount of battery charge remaining. If an AC adapter is connected to the computer, the

battery meter displays a plug icon. The battery meter icons are visible in the desktop taskbar. If you move the cursor over the battery or plug icon in the desktop

taskbar, a pop-up window shows the battery's current charge status percentage.

before you insert the battery into your computer. Once the battery is inserted into the computer, you cannot see the charge gauge.

Windows

98 operating system, click the Start button, point to Settings, and then click Control Panel. Double-click the

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