Lenovo ThinkPad Edge E420 User Manual page 96

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.
Replacing the battery installed in the battery space of your computer
To replace the battery, follow the procedure below.
1. Turn off the computer, or enter hibernation mode. Then disconnect the ac power adapter and all cables
from the computer.
2. Close the computer display, and turn the computer over.
3. Slide and hold the battery latch to the unlock position
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User Guide
1 , and remove the battery 2 .