An Amazingly Easy Way to Check If a Battery Is Dead

It turns out that when the alkaline in a battery wears down, it produces a gas that fills the inside. So if you’ve got a box of random batteries you want to test, and don’t have access to a voltmeter or any other device, you can simply drop them vertically a short distance onto a hard surface. A charged battery will make a solid thump sound and often remain standing, while a dead battery makes a muffled sound, bounces repeatedly, and then topples over.

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2 Comments on "An Amazingly Easy Way to Check If a Battery Is Dead"

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Guest

you have a good sense of humor. This helped me out really great thanks a lot

best maadd
Guest

You are so cute.

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