Calculator Battery Corrosion

The display on Mary’s favorite little calculator (remember calculators?) faded away and, of course, this appeared when I popped the back:

Calculator battery corrosion

Calculator battery corrosion

A touch of vinegar, some scrubbing, and new cells restored it to good health.

That was easy …

  1. #1 by Olli on 2017-07-29 - 09:37

    Who could forget the TI-30?

    • #2 by Ed on 2017-07-29 - 11:39

      This one is dumber than a box o’ rocks, but it beeps when she pushes the buttons: she likes audio feedback. If I could hear the beep, I might like it, too … [sigh]