IBM RT PC Problem Determination Manual page 166

IBM 6150 System Unit Battery Removal
A-16 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, incinerate, 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 that has been specifically
classified by Underwriters Laboratories, Inc. for use with
the IBM 6150 and is so m arked to indicate such
classification. Use o f another 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 front cover. See
3. Disconnect the battery cable from the operator panel board.
4. Open the battery box and remove the battery.
Options Installation.