Texas Instruments TI-84 PLUS SILV Guidebook - Page 408
Appendix C: Service and Warranty Information, Effects of Replacing the Batteries, Battery Precautions
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After Message A is first displayed, you can expect the batteries to function for about one or two weeks, depending on usage. (This one-week to two-week period is based on tests with alkaline batteries; the performance of other types of batteries may vary.) If Message B is displayed, you must replace the batteries immediately to successfully download an application. Effects of Replacing the Batteries Do not remove both types of batteries (AAA and backup) at the same time. Do not allow the batteries to lose power completely. If you follow these guidelines and the steps for replacing batteries, you can replace either type of battery without losing any information in memory. Battery Precautions Take these precautions when replacing batteries. • Do not leave batteries within reach of children • Do not mix new and used batteries. Do not mix brands (or types within brands) of batteries. • Do not mix rechargeable and nonrechargeable batteries. • Install batteries according to polarity (+ and N) diagrams. • Do not place nonrechargeable batteries in a battery recharger. • Properly dispose of used batteries immediately. Do not leave them within the reach of children. • Do not incinerate or dismantle batteries. Disposing of used batteries safely and properly Do not mutilate, puncture, or dispose of batteries in fire. The batteries can burst or explode, releasing hazardous chemicals. Discard used batteries according to local regulations. Replacing the Batteries To replace the batteries, follow these steps. 1. Turn off the graphing calculator. Replace the slide cover over the keyboard to avoid inadvertently turning on the graphing calculator. Turn the back of the unit toward you. 2. Hold the graphing calculator upright, push downward on the latch on the top of the battery cover, and then pull the cover toward you. Note: To avoid loss of information stored in memory, you must turn off the graphing calculator. Do not remove the AAA batteries and thebackup battery simultaneously. 3. Replace all four AAA alkaline batteries simultaneously. Or, replace the backup battery. • To replace the AAA alkaline batteries, remove all four discharged AAA batteries and install new ones according to the polarity (+ and N) diagram in the battery compartment. Appendix C: Service and Warranty Information 401