I still have my TI-85 from high school on my desk with batteries that expire in 2023. 2013 sounds about right for when I last put fresh batteries in it. Admitte

I still have my TI-85 from high school on my desk with batteries that expire in 2023. 2013 sounds about right for when I last put fresh batteries in it. Admittedly I use wabbitemu with a TI-85 ROM on my phone so I don't reach for my physical calculator as much as I used to. But I will never not use this calculator in one form or another as my primary calculation device, it's just too familiar.