TI-89 Titanium batteries Problem

[jksik92]

I use TI-89 Titanium normally.

It was not even a month since I changed my batteries.

One day I pressed on but did not turn on.

I tried out other batteries and found out that batteries were not the matter of problem.

What's wrong?

What should I do?

 

[Mark44]

Your calculator contains two kinds of batteries: the three AAA batteries that you changed not long ago, and a silver oxide backup battery. Your problem might be that the backup battery is dead. Here's some information from the user manual for your calculator - http://education.ti.com/downloads/guidebooks/graphing/89ti/TI89TitaniumGuidebook_Part2_EN.pdf

1. To replace the silver oxide backup battery, remove the battery cover and unscrew
   the tiny screw holding the BACK UP BATTERY cover in place.
2. Remove the old battery and install a new SR44SW or 303 battery, positive (+) side
   up. Replace the cover and the screw.

 

[quicknote]

I would suggest first checking the battery compartment to make sure there are no loose connections or debris that could be affecting the battery's performance. If the compartment appears to be in good condition, the next step would be to try resetting the calculator by removing the batteries and holding down the "APPS" key for 10 seconds before reinstalling the batteries. If this does not solve the issue, it is possible that there is a malfunction with the calculator itself and it may need to be repaired or replaced. It is also important to note that constantly using the calculator with the backlight on or running complex programs can drain the batteries faster, so it may be helpful to conserve battery life by adjusting the backlight or limiting the use of intensive programs.