How do you change the TI-92 lithium battery?
I have replaced the AA batteries but nothing appears
on the display window.
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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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