To Replace Battery - Lenovo ThinkPad X240 User Manual

Prerequisites for the procedure
DANGER
If the rechargeable battery pack is incorrectly replaced, there is danger of an explosion. The battery
pack 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 battery pack, do the following:
Important: Before you replace the external battery, ensure that the built-in battery has enough remaining
power or the computer is connected to ac power. Otherwise, the computer might shut down during the
battery replacement.
1. Close the computer display, and turn the computer over.
2. Slide the battery latch
unlocked position, and then remove the battery pack
70
User Guide
1 to the unlocked position. Then unlock the battery latch
3 .
2 and hold it in the