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Appendix — Reference Information 97
Battery Information
Replacing the Battery
Replace the battery with a new CR2032 lithium battery.
Caution: Risk of explosion if replaced by an incorrect type. Replace only
with the same or equivalent type recommended by Texas Instruments.
Dispose of used batteries according to local regulations.
Note: The calculator cannot retain data when the battery is removed or
discharged. Replacing the battery has the same effect as resetting the
calculator.
1. Turn off the calculator and turn it over with the back facing you.
2. Using a small Phillips screwdriver, remove the four screws from the
back cover.
3. Carefully pry off the back cover.
4. Using a small Phillips screwdriver, remove the screws from the metal
battery cover and lift the cover off the battery.
5. Tip the calculator slightly to remove the battery.
Caution: Avoid contact with other calculator components.
6. Install the new battery with the positive sign (+) sign down (not
showing).
7. Replace the battery cover and the screws that hold it in place.
8. Align the screw holes in the back cover with those in the calculator,
then snap the back cover onto the calculator. Replace the screws.
Caution: Risk of explosion if replaced by an incorrect type. Replace only
with the same or equivalent type recommended by Texas Instruments.
Dispose of used batteries according to local regulations.
Battery Precautions
• Do not leave battery within the reach of children.
• Do not mix new and used batteries.
• Do not mix rechargeable and non-rechargeable batteries.
• Install battery according to polarity (+ and - ) diagrams.
• Do not place non-rechargeable batteries in a battery recharger.
• Properly dispose of used batteries immediately.
• Do not incinerate or dismantle batteries.
• Seek Medical Advice immediately if a cell or battery has been
swallowed. (In the USA, contact the National Poison Control Center
collect at 202-625-3333.) Used only for small button cell batteries.