All too often, we run into the problem of random batteries lying around the house. Worse, we can’t tell just by looking at them whether or not they’re fresh batteries, or used-up ones. Rather than sticking them meticulously into a toy at hand, and seeing if the toy makes any noise when turned on, just drop those batteries on the floor! Fresh ones will just thud, while dead ones will bounce!
In this video, you’ll see the bouncing in action, and also learn why dead batteries bounce. Very useful trick to know, the next time you find yourself with a batch of batteries.
The video presents a “Simple Batteries Test Tip”.
Image source: Lee Hite
Move on to the next page video: Why A Dead Alkaline Battery Bounces!