One of the authors under the pseudonym "Oborotez" proposed a variant of how to make a simple and powerful battery that can run on saline. From such a battery you can charge your mobile, turn on the radio, lighting and much more. Knowing the principle of operation of such a battery will definitely never interfere with those who are engaged in tourism.

Materials and tools for creating a battery:
- metals for creating a galvanic pair (magnesium and copper);
- salt;
- water;
- housing from an old battery;
- soda;
- vice;
- hacksaw;
- multimeter;
- LEDs and other consumers for checking the battery.

Manufacturing process:

Step one. Hull preparation
As a case for a new battery, the author used a plastic battery case from a scooter. Old batteries can be taken free of charge in those places where they repair scooters. First of all, the acid must be carefully drained from the battery. In this case, you need to be extremely careful, because if it comes into contact with the skin, the acid causes a burn. Baking soda is used to neutralize the acid. Also, at the end of the procedure, it is best to wash your hands with water and dissolved soda.

Step two. Preparation of a galvanic pair
As a galvanic pair, two metals such as copper and magnesium are used, since it is in this case that it is possible to obtain a maximum current and voltage of 1.2-1.4 Volts. As for copper, it will not be difficult to find it, it is perfect for these purposes. copper wire, only the lacquer coating must be removed from it, otherwise the battery will not work.

As for magnesium, things are a little more complicated here. Steel, with high content magnesium can be found in old German cars, also a lot of magnesium is contained in the engine case of the Zaporozhets car. If there are no such elements, then elements from Water heaters are perfect. They are also called magnesium anodes.

You need to cut off the extra pins from the anodes, and cut the anodes themselves into de parts, as a result, six small ones will turn out of three anodes.

Step three. Battery assembly
Now you need to take the copper wire and crush it as in the picture. The larger the wire, the larger the contact area, and as a result, the higher the current strength. Next, the copper wire is connected in series with magnesium anodes and placed in the compartments of the battery case. In this case, copper will form a positive potential, and magnesium will be negative. On final stage the container is filled with salt water. If the water is warm, this is good, since the current will also increase.

Battery testing
That's all, the battery is assembled, you can proceed to testing. When connecting a multimeter, the author got a result of 7.7 Volts, which is pretty good, and the short circuit current was 70 mA. The current strength can be adjusted by manipulating the plates. Experimentally, it was possible to achieve a current of 150 mA. The closer they are located and the larger their area, the more energy the battery will produce.
From such a battery, two diodes of 0.2 watts each light up with a bright light without any problems.

It is amazing! The copper-magnesium battery is easy to manufacture and is a source of practically free electricity. This is a simple water battery that can always come in handy, especially where there is no way to run to the store for a couple of purchased batteries.

The cathode is copper tube, the anode is a rod made of an alloy of magnesium (90%) and aluminum (10%). Aluminum can be used instead of this alloy. For the battery presented in this video tutorial, you will need 4 of these bars. Holes were drilled in the bars, threads were cut into them and bolts were screwed in for attaching wires. Magnesium rods should be wrapped with a rag to avoid a short circuit between the anode and cathode.

Salt water is used as an electrolyte, to which you can add a pinch of soda. One battery outputs 1.2 volts. In total, four batteries - up to 5 volts. This simple 4-cell water battery can power two LEDs or a small radio. Gradually, the magnesium alloy wears out, but it is easy to clean it, replace the electrolyte, and you can use free electricity for three more days in a row. Have you ever had the idea to make a 12 volt or 36 volt battery?

Another variant of the copper-magnesium battery

Another such simple battery in the article. AND .

The battery runs on fresh water

How to make a battery activated by ordinary water?
It's simple - watch the video about a small experiment that I did by doing three different types dry batteries activated by water.
Water batteries or batteries that run on ordinary water are not a myth, but an everyday reality.
All the elements of this battery are easily accessible and you can do this experience yourself at home.

Ecology of consumption. Science and technology: The Lemelson Prize, a $500,000 annual award given to inventors, went to Jay Whitacre, a scientist and professor at the College of Engineering at Carnegie Mellon University, this year for his water hybrid ion battery.

The Lemelson Prize, a $500,000 annual award given to inventors, this year went to Jay Whitacre, a scientist and professor at the College of Engineering at Carnegie Mellon University, for his Aqueous Hybrid Ion (AHI) battery, recognized as reliable , an environmentally friendly and cost-effective energy storage system.

This first-of-its-kind battery, used in conjunction with solar and wind energy systems, is able to store significant amounts of energy at a low cost per joule and is designed to operate around the clock.

Designed using abundantly available and inexpensive resources, including water, sodium and carbon, an AHI battery could help reduce dependence on fossil fuels and make sustainable energy a viable alternative.

Whitacre's founding company, Aquion Energy, has fully scaled its production and commercialized batteries using global distribution channels and installations in many locations, including Australia, California, Germany, Hawaii, Malaysia and the Philippines.

“Our technology is based on a simple idea: in order to meet the challenges of the world's growing energy needs and increase the use of renewable energy, we need a large-scale energy storage system that has high performance, safe, sustainable and cost effective.

Our founder, Professor Jay Whitacre, took on this challenge and discovered a simple and elegant solution that addresses 200 years of technology: seawater batteries. The company has translated this idea into a patented hybrid-ion process, a battery of unique salted electrolyte technology. The use of abundant, non-toxic materials and modern low-cost manufacturing technologies make our batteries capable of taking on the global energy storage challenge.”

As described by the company, “the unique aqueous hybrid ion battery consists of a salt water electrolyte, a manganese dioxide cathode, a carbon composite anode, a synthetic cotton separator. The battery uses a non-corrosive reaction at the anode and cathode to prevent material wear. As a result, chemical reaction based on water has become the key for a non-toxic and non-flammable product that is safe to handle and for environment". published

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Do-it-yourself eternal battery 2.13 volts.

Today I will tell you how to make a battery that can last about half a year.

Today I’ll tell you how to make a battery that can last about half a year, or you can use an alternative, for example, a 12-volt solar battery manufactured by Chinaland Solar Energy.

We'll need:

• body, it will glass jar, plastic will not work;


• some piece of silver, in this case it is a spoon, it will serve as a core and will also participate in a chemical reaction;


• copper wire, it may be an old winding from some old electrical appliances;


• cling film, it will serve as insulation between the layers of the winding.

For the solution in which all this will happen:

• apple cider vinegar 6%, a teaspoon;


• glycerin, it is sold in any pharmacy, it costs ten rubles, four vials;


• ordinary table salt fine, a teaspoon.

First, wrap the spoon with cling film so that there is no direct contact with the copper wire. I wrapped the spoon with a film, as you can see, the upper and lower ends of the spoon are bare, this is in order to interact with the solution, now let's start wrapping it with a wire. We leave a piece more authentic, this will be one of the contacts and wind the first layer. I wound one layer, as you can see the turns are not close to each other, there should be space between them for insulation. Now you need to wind the cling film again, I wound the second layer, the film needs to be wound as freely as possible so as not to impede the flow of the solution between the wires, and now you need to wind the second layer of wire and so on, the film, then the wire, and so on until you get bored.

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Enough for the whole winter: a magnificent dozen book novelties about Yaroslav. Review

Mediarost presented a number of book novelties released during 2019 - a very fruitful period for the Rybinsk publishing house. Most of them are united by the subject of local history, which makes the books conceptually important, resonant and indispensable for a home collection or smart gifts, Irina Kovaleva, head of publishing projects at Mediarost, told Yarkub.

The Association of Cooks of the Yaroslavl Region appeared. It will become a platform for bringing together restaurateurs, chefs, retailers, manufacturers and gastro enthusiasts.

During the gastronomic event "Know Ours!" #Yaroslavskieprodukty", which will open in Yaroslavl on September 20, will host a presentation of the Association of Culinary Arts of the Yaroslavl Region, said the president of the Association, the producer of "Feast on the Volga", CEO group of companies "Volga group" Yulia Skorokhodova.

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If you yourself are a scientist or just an inquisitive person, and you often watch or read last news in science or technology. It is for you that we have created such a section, which covers the latest world news in the field of new scientific discoveries, achievements, as well as in the field of technology. Only the latest events and only trusted sources.

In our progressive time, science is moving at a fast pace, so it is not always possible to keep up with them. Some old dogmas are crumbling, some new ones are being put forward. Mankind does not stand still and should not stand still, but the engine of mankind is scientists, scientists. And at any moment a discovery can occur that can not only amaze the minds of the entire population of the globe, but also radically change our lives.

A special role in science is allocated to medicine, since a person, unfortunately, is not immortal, fragile and very vulnerable to all kinds of diseases. Many people know that in the Middle Ages people lived on average 30 years, and now 60-80 years. That is, at least doubled life expectancy. This was influenced, of course, by a combination of factors, but it was medicine that played a big role. And, for sure, 60-80 years is not the limit for a person average life. It is possible that someday people will cross the mark of 100 years. Scientists from all over the world are fighting for it.

In the field of other sciences, developments are constantly underway. Every year, scientists from all over the world make small discoveries, slowly moving humanity forward and improving our lives. Places untouched by man are being explored, first of all, of course, on our home planet. However, work is constantly taking place in space.

Among technology, robotics is especially rushing forward. An ideal intelligent robot is being created. Once upon a time, robots were an element of fantasy and nothing more. But already on this moment some corporations have real robots on staff that perform various functions and help optimize labor, save resources and perform for a person dangerous species activities.

Still want Special attention give to electronic computers, which even 50 years ago took up a huge amount of space, were slow and required a whole team of employees for their care. And now such a machine, in almost every home, is already called more simply and briefly - a computer. Now they are not only compact, but also many times faster than their predecessors, and anyone can figure it out. With the advent of the computer, mankind has opened a new era, which many call "technological" or "information".

Remembering the computer, do not forget about the creation of the Internet. It also gave a huge result for humanity. This is an inexhaustible source of information, which is now available to almost everyone. It connects people from different continents and transmits information with lightning speed, it was impossible to even dream of such a thing 100 years ago.

In this section, you will certainly find something interesting, exciting and informative for yourself. Perhaps even someday you will be one of the first to know about a discovery that will not only change the world, but will turn your mind upside down.