Texas Instruments TITANIUM TI-89 - Manual (Page 949)

Appendix B: Technical Reference 950
Replacing the Lithium Battery in the Voyage 200 Replacing the Lithium Battery in the Voyage 200 Replacing the Lithium Battery in the Voyage 200 Replacing the Lithium Battery in the Voyage 200
To replace the lithium backup battery, remove the battery cover. Insert a blunt object into
the circular indentation next to the battery. Gently place a finger on the lithium battery
and pry the battery out.
Slide in a new CR1616 or CR1620 battery, positive (+) side up. Press firmly to snap the
new lithium battery into place.
AAA alkaline battery compartment Lithium battery