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Every second person in our latitudes there will house two things: the package with the package and a bank of batteries. The package with the package - this is all holy and ineradicable. But also to collect used batteries - is not the worst idea. Everything is better than throwing them in the trash, which absolutely can not do. And to the emergency reserve and stretches a hand when he suddenly "got" remote, and too lazy to go to the store. How not to waste time and quickly find more current the battery? Tip - below.
That awkward moment when the TV remote prestaot react to buttons and persuasion, and you realize that the house no one pack of "fresh" batteries. And if the case is still in the evening, and the shops are closed... a nightmare! It's time to start scouring the house in search of old batteries. Well, if they are prudent in one place. But among the mountains b / y of iron shnyh find work? Help here is a simple test that many of us could spend sometime at physics lessons.
No inventory: it requires only Alkaline "experimental" batteries and perfectly flat surface. Keeping the battery vertically, lift it over a distance of 10-15 cm from the surface and the drop.
If the battery is landed, keeping upright, then it was more power.
If the battery fell flat, it is certainly empty.
Once again, compare the results.
Now recognize still nebeznadozhnuyu battery will be easier. But better still quickly I go to the store and replenish stocks. And at the same time to hand over all broken. But for the most extreme cases here, How to make a battery of copper coins.
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A source: https://novate.ru/blogs/230718/47190/