…using the ?Isaac Newton? Gravity Battery Method
Most households (if not ALL) use alkaline batteries for various purposes. Flashlights, lamps, hair trimmers, toothbrushes, remote controls, video game controllers, cameras, and so on.
Many of us, including myself, who use a lot of these gadgets and devices like to stock up on our batteries ? AA, AAA, D,C, 9-Volt, etc…. We also tend to dump the old batteries together in the same drawer or basket where we get new ones. And even though most people plan to keep them in separate containers (for proper disposal of dead batteries…think green, okay), they are often in such a hurry that they fail to do so.
And here is where the trouble starts. Every time we need a new battery, we can’t tell which ones are new and which are dead.
Some people use a ?professional? volt meter or tester where you can attach the nodes to the ends of a battery and it will give you the exact charge left.
Most people however, like me, just want to find out if the batteries are good enough to use or too weak that it needs to be thrown away.
I was lucky to have found a user-friendly battery tester. It goes by the brand name Chevron and is made in China specially for Big W (a major Department store for those outside Australia). It is an affordable plastic contraption with metal nodes that are attached to LED indicators (see photo). Putting the alkaline battery between the metal nodes immediately tells you if the battery is ?Good?, ?Weak? or ?Replace?. The downside of this tester is that it is not durable and gets broken easily. Of the three testers I purchased a year ago, only one is left functioning properly. Also, since it is made specially for a specific store, it is not available in most places, and the store itself (Big W) usually runs out of stock when I want to purchase the item for my friends.
So what else is there to do if you don’t like using a professional tester or if your ?user-friendly but cheaply made? tester breaks down?
Fortunately, a few resourceful persons have come up with a way to check and differentiate new and dead batteries using what one enterprising person calls his ?Isaac Newton? Gravity Battery Tester.
Check out this video and find out how:
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Video: Gravity Operated Battery Tester (suburban sentinel / YouTube)
For those who prefer not to watch the video, here is the secret: new or good batteries weigh a bit heavier and they don’t bounce when they are dropped a few inches from a solid surface. New or good batteries just hit the surface and fall (some even remain standing) while the old or dead batteries bounce once or even a couple of times.
Check out this other video explaining the same idea:
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Video: Hot to test a ?AA? battery (bajarider1000 / YouTube)