Replacing the backup battery

Before you start, print these instructions.

DANGER

If the backup battery is incorrectly replaced, there is danger of an explosion. The backup battery contains a small amount of harmful substances. To avoid possible injury:

Replace only with a battery of the type recommended by Lenovo.

Keep the battery pack away from fire.

Do not expose it to excessive heat.

Do not expose it to water or rain.

Do not short-circuit it.

Do not drop, crush, puncture, or subject to strong forces. Battery abuse or mishandling can cause the battery to overheat, which can cause gasses or flame to “vent” from the battery pack or coin cell.

To replace the backup battery, do the following:

1.Disable the built-in battery. See “Disabling the built-in battery” on page 59.

2.Close the computer display, and turn the computer over.

3.Remove the base cover assembly. See “Replacing the base cover assembly” on page 61.

4.Detach the connector 1 , and then remove the backup battery 2 .

Chapter 6. Replacing devices 71

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Lenovo 20AA000MUS, T431s, 20AA000BUS manual Replacing the backup battery

20AA, T431s, 20AA000MUS, 20AA000BUS specifications

The Lenovo ThinkPad series has long been a favorite among business professionals and tech enthusiasts alike, and the Lenovo 20AA000BUS, 20AA000MUS, and T431s models exemplify the brand's commitment to innovation, performance, and rugged design. These laptops are designed for enterprise users who require reliability and versatility in their everyday tasks.

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