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 …

2 thoughts on “Calculator Battery Corrosion

    1. 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]

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