I had a TI-81 in 1993, and upgraded to a TI-85 in 1996 I think. I didn't mean my comment to be an indictment of TI calculator battery life. My experience with t

I had a TI-81 in 1993, and upgraded to a TI-85 in 1996 I think. I didn't mean my comment to be an indictment of TI calculator battery life. My experience with them matches yours. They were great! I do remember the ominous feeling every time I noticed the screen getting fainter, checking to see what contrast level I was currently at. But it wasn't actually that big of a deal. I probably only needed to change them twice a year or something.