Texas Instruments TI-83 PLUS - Manual (Page 738)

TI-83 Plus General Information 735
Appendix B:
General Information
Battery Information
When to Replace the Batteries
The TI-83 Plus uses five batteries: four AAA alkaline batteries and one
lithium battery. The lithium battery provides auxiliary power to retain
memory while you replace the AAA batteries.
When the battery voltage level drops below a usable level, the TI-83 Plus :
Displays this message when
you turn on the unit. Displays this message when you
attempt to download an application.
Message A Message B