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1020 DIMM Card / Backup Battery
Safety Notice 4: Translation on page 11
The lithium battery can cause a fire, explosion, or
severe burn. Do not recharge it, remove its polarized
connector, disassemble it, heat it above 100°C
(212°F), incinerate it, or expose its cell contents to
water. Dispose of the battery as required by local
ordinances or regulations. Use only the battery in the
appropriate parts listing. Use of an incorrect battery
can result in ignition or explosion of the battery.
1 Turn the computer upside down.
23456: DIMM
237: Backup battery
When replacing:
Make sure the plus side is on top when replacing
the backup battery.
Step Location (Quantity) Length
2 DIMM cover (1) —
Note: Only loosen the screw in step 2.
218 IBM Mobile Systems - ThinkPad HMM Volume 3