Pages

Aug 14, 2013

An Amazingly Simple Way To Test 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.

What could be easier? (That doesn't involve your tongue or mild electric shocks.)

1 comment:

YeamieWaffles said...

This is brilliant, actually a piece of genius, Science can be so damn awesome at times, love it.