IBM F50 RS/6000 7025 - Manual (Page 319)

Appendix B. Replacing the Battery
The manufacturer has designed this product with your safety in mind. The lithium
battery must be handled correctly to avoid possible danger. If you replace the
battery, be sure to adhere to the following instructions.
CAUTION:
A lithium battery can cause fire, explosion, or severe burn. Do not recharge,
disassemble, heat above 100°C (212°F), solder directly to the cell, incinerate, or
expose cell contents to water. Keep away from children. Replace only with the
part number specified for your system. Use of another battery may present a
risk of fire or explosion.
The battery connector is polarized; do not attempt to reverse polarity.
Dispose of the battery according to local regulations.
Appendix B. Replacing the Battery B-1