How do you change the TI-92 lithium battery?
I have replaced the AA batteries but nothing appears
on the display window.
javier, to replace the lithium backup battery, remove the back cover from the unit and unscrew the tiny screw holding the lithium battery cover in place. Remove the old battery and install a new CR2032, positive (+) side up. Replace the cover and the screw.
Hope this helps, good luck.
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