Lenovo ThinkServer RD220 3797 Series Installation And User Manual page 12

Statement 2:
CAUTION:
When replacing the lithium battery, use only the battery recommended by the
manufacturer. If your system has a module containing a lithium battery,
replace it only with the same module type made by the same manufacturer.
The battery contains lithium and can explode if not properly used, handled, or
disposed of.
Do not
v Throw or immerse into water
v Heat to more than 100°C (212°F)
v Repair or disassemble
Dispose of the battery as required by local ordinances or regulations.
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ThinkServer RD220 Types 3729, 3779, 3797, and 3798: Installation and User Guide