IBM RT PC Problem Determination Manual page 162

IBM 6151 System Unit Battery Removal
A-12 Problem Determination Guide
DANGER
Fire, explosion, and severe burn hazard. Do not
recharge, d isa ssem ble, heat above 100° C, solder directly
to the cell, incin erate, or expose cell c o n t e n t s to water.
Keep away from children. Replace with IBM Part
#6299201 only or a battery th a t has been specifically
classified by Underwriters Laboratories, Inc. for use with
the IBM 6151 and is so m arked to indicate such
classification. Use o f anoth er battery m ay present a risk
of fire or explosion.
For translations of this danger notice refer to "Safety
Translations" on page iii.
1. Turn off the system.
2. Remove the system unit covers. See
3. Disconnect the battery cable from the system board.
4. Slide the battery up out of the holder.
Options Installation.