Duracell Battery Temperature Indicator

Surely, each of you knows that most Duracell batteries have a built-in charge indicator. If you have such batteries and they are completely exhausted, but do not discard them, as you can make a visual temperature indicator from the indicator of such a battery.

How does the battery indicator work?

Everything is very simple. When a button is pressed, the contacts of the metal foil close under the braid.
An electric current begins to flow through this foil, which causes the foil strip to heat over its entire surface. A stripe with divisions of various colors is glued on top. These are cells with thermal paint that changes color depending on the temperature. Each cell has its own paint that responds to a different temperature section. The red part is the most sensitive, and the last green is the most insensitive and requires maximum temperature.
As a result, when a strip of foil warms up, depending on the temperature of its heating, different sections of the indicator light up. As a result, an approximate battery level is determined.
In fact, a strip of thermal paint is a ready-made temperature indicator. With the help of such an indicator, you can visually control the temperature of something, for example, a teapot, mug, can, etc.

We get the indicator

In order to get the indicator, take a clerical knife. And on the side, cut a line near the indicator.
We bend. So he looks inside.
Cut off from the braid.
The cut out indicator looks like this.

Temperature indicator test

To check the temperature indicator, I put it on a cold soldering iron and plug it into the network.
The indicator shows that the soldering iron has started to warm up
And all sections of the indicator light up. The temperature of the soldering iron is about 60 degrees Celsius, so you can touch it a little bit with your hands.
If you remove it, it will begin to cool and all divisions will be the same as in the beginning dark.
Such an indicator can remotely determine and control the temperature, from about 30 to 60 degrees Celsius. Where 30 is the red section, and 60 is the last green. To be honest, I definitely did not measure.

Practical use

For control, glue the indicator on a glass jar.
Pour boiling water.
It can be seen that the fissions, as they heat up, begin to change.
Now you can visually see that the bank has hot water.
But after a while, the bank cooled down and the indicator became faded.
Here is such an interesting and useful experiment. I think that you can easily find use for such a thing. Thanks for your attention!

Watch the video: Temperature indicator from AA or AAA duracell battery charge indicator duracell powercheck (November 2024).