There's nothing cooler than a secret hidden in plain sight,

especially when it comes to the objects we use and interact with every day.

Some of these secrets seem obvious once pointed out, while others make you say,

Wow, I never would have spotted that!

Either way, learning about these hidden features and uses can seriously upgrade your life,

so let's get right into some amazing secrets hidden in everyday things.

You're listening. You're listening to be amazed.

Ever been in the frustrating position of having a drawer full of batteries with no idea which ones are used and unused?

Most people have, and it can take a long tedious time to test each battery individually by popping them into appliances like remote controls.

Luckily, there's a handy trick to test your battery's power levels instantly, and it's so simple you'll wonder how you ever manage without it.

All you need to do is drop the battery from a relatively low height in an upright position.

If the battery is unused or mostly full, it shouldn't bounce much.

If it's depleted or empty, the battery will be notably bouncier.

So why is this? Well, when a regular battery is used, energy is given off by a chemical reaction between the materials inside the battery.

The process converts these materials into new compounds, one of which is zinc oxide, which happens to be naturally very bouncy.

It's so bouncy, in fact, that it's used in golf balls to increase the distance they travel when hit.

Up to an upper

limit, the more a battery is used, the more zinc oxide forms inside, and the bouncier the battery

becomes. So when you're checking your batteries, whichever battery bounces least is the one you'll

probably want to use. Of course, it goes without saying that you should never try this on batteries

that are broken, misshapen, or leaking, nor should you should never try this on batteries that are broken,

misshapen, or leaking, nor should you be throwing car batteries around the place.

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