A mobile phone battery lasts a couple of days on a charge, at best.
The battery in a car key fob expires after about a year.
Leave AA batteries in a remote for more than four or five years and they corrode and stop working. Sometimes they ruin the entire device.
Smoke- and carbon monoxide detectors have a 10-year lifespan; then their batteries (and detectors) become unreliable and need to be thrown away.
Meanwhile, the Thinner brand digital scale that we got in 2003 is still chugging away, and is 100% accurate to more than 200 pounds, on its original battery.
Kudos to the team behind this scale, which really was built to last.