At PAGG this year I bought one of those remote battery holders for my Twilight Zone and am only now installing it. After taking out the old batteries, which were fine, I noticed the date on them was 2003. The date on the ones I'm installing are 2017, so by extrapolation, the batteries that were in before, were probably put in around 1998. Can you say "whew"?
That got me thinking, anybody else have any close calls?