How to reanimate a finger battery. How to extend battery life

You will need

- awl or sharp nail;
- syringe;
- distilled water;
- 9% table vinegar;
- 10% hydrochloric acid solution;
- plasticine or resin;
- a small hammer;
- hot water;
- battery charger.

Instructions

The process of restoring a battery to work is called regeneration. Practice shows that not every element is suitable for recovery, but only one whose capacity and voltage have not dropped below a certain value(for a 1.5 V finger battery, this value will be 0.7-0.8 V).

Take into account the fact that batteries that operate at high load currents (flashlights, children's toys, portable radio tape recorders, etc.) are most successfully recoverable; much worse - elements operating at low currents (clocks, portable radio, cameras, etc.)

If the finger battery has been stored for a long time and has dried out, make two holes with an awl or a thin nail along the central rod in the middle between it and the edges of the battery. The punctures should be made to a depth of approximately ¾ of the cell height.

Inject a few drops of water (preferably distilled) into one of the holes with a medical syringe. The displaced air will exit through the second hole at this time. As soon as water appears in the second hole, remove the syringe. After "filling" the battery, cover the holes with plasticine or hot resin.

Another, more reliable option for filling a battery is not water, but a 10% hydrochloric acid solution or a double dose of vinegar.

You can also reanimate the battery by lowering it into hot water for about 10 minutes.

Mechanical stress can also extend the life of the battery by 2-3 days. Try to gently tap the body of the elements with a small hammer.

There are charger options for different types batteries. Diagrams of such devices can be found on the Internet.

note

Keep in mind that it is better not to take risks and, if possible, still replace the "updated" batteries with new ones, since there is a risk that liquid may leak from the old batteries and damage the microcircuits of your equipment.

Sources:

battery liquid

Many motorists are familiar with the situation when one frosty morning the engine refuses to wake up after a cold night. Then it becomes clear that the battery is discharged. But do not rush to rush to buy a new one. After all, you can restore a "dead" battery. If recharged correctly, it will last for a long time.

Instructions

Remember that you need a battery at a certain rate. If, for example, your battery has a capacity of 50 ampere hours, it needs to be charged for 10 hours at 5 amperes. Remember to remove the covers when charging.
If you try to charge the battery faster, it may result in overheating or boiling of the electrolyte. And if the plates warp, the battery will die. If the battery is sealed, charge it even more slowly. On average, no more than 2.5% of the ampere-hour. However, keeping the battery charged for too long is also not worth it.
There are chargers equipped with a quick charge function. It must be used

only in extreme cases. After all, this procedure reduces the life of the battery.

If your battery is dead and you urgently need to start, the most in a simple way will charge the battery from an external source. Usually motorists help each other out by letting the discharged battery recharge from their car. However, for this you need to have a starter cable. They are very different. But it is better not "left" made in a handicraft way, but a factory one. After all, the wrong cable can melt at the first use. Because of this, it will warm up and lose energy. So it’s not far from the fire.

If you have a starter cable, first you need to connect the red cable to the (+) terminal on the charged one. Then you need to connect the other end of the red cable to the (+) terminal on the dead battery. Then connect the black cable to the (-) terminal on the charged battery and the other end to a clean ground point on the engine block or chassis. The main thing is that it is away from the battery, carburetor, fuel hoses. At the time of connection, a small spark may slip through.
Care must be taken to ensure that both cables do not touch moving parts. The vehicle can now be started with a charged battery. It should run for at least one minute. Then try to start the car with a discharged battery. If the engine does not start, wait a few minutes and try again. When everything works out, you can drown the donor car. When you disconnect the starter cable, repeat the entire procedure in reverse order.

Salt battery recovery

In this video I will share my method of recovering saline finger-type batteries. To do this, we need the batteries themselves, electrical tape, a marker, scissors, a tester, a syringe and a working solution. First, let's check for performance. As you can see, they are generally dead. Let's see what the device shows. We take out and proceed to restore their work.

Important information. Only saline batteries are suitable for this experiment. They should be intact on the outside, there should be no smudges or discharge. Batteries of other types, i.e. alkaline, alkaline or rechargeable batteries, are not suitable for this method. It is hazardous to health.
So, we take a salt battery, find the connecting seam and at an angle of 90 degrees to the seam at a distance of 1 centimeter from the edge, make 4 marks. In these places we make holes with a drill for 4. We drill very carefully so as not to damage the shell, we only drill the outer shell, no more.

After the holes are made for the batteries, we put them in one container with a plus on top. We fill it with working solution so that the level overlaps the upper drilling. We use 6 percent food vinegar as a solution. Fill in carefully. We leave the batteries in this state for 10-15 minutes. The temperature of the solution should be at room temperature. We wait 15 minutes and proceed further. After the batteries are soaked in the solution, carefully lay them out and put them to dry with the seam down, so that the excess is absorbed onto the napkin. We leave in this state for 10 minutes. Next, we cover the hole with ordinary electrical tape.

The final stage of our charge recovery experiment has come. We check with the device. We insert them into the flashlight and try to turn them on. The light is on. The experience was a success. Let me remind you that this method of prolonging the work is suitable only for salt batteries.

Is the battery from a camera, flashlight, children's toy, or other necessary device suddenly discharged? Such an opportunity cannot be foreseen. Unless you are using special indicator batteries. Or, as a precaution, don't carry a replacement with you. How to charge batteries at home? We will share useful instructions and tips with you.

What batteries can I charge?

Not every finger battery can be filled with energy using the artisanal method. What batteries can I charge? Only finger alkaline (alkaline). But in no case salt is allowed! The possibility of leakage of the composition or explosion of the product is not excluded.

Method 1: charger

We figured out if it is possible to charge the battery. If you constantly use such finger batteries then the easiest way is for you to buy a dedicated charger for them. Such a device will help "breathe life" into the battery without unnecessary hassle.

However, the method also has significant drawbacks. Each charge reduces battery life by one third. In addition, the procedure may cause its composition to leak.

Method 2: power supply

Let's take a look at how to charge your batteries at home. For this method, you need a power supply and wires to connect to it. Everything is in place? Here are the instructions for action:

When receiving a rechargeable finger-type battery in this way, pay attention to these recommendations:

The process will not work if you reverse the polarity when connecting the wires. Moreover, in this way you will destroy the charge remaining in the element.
Using the described method, it is permissible to charge the battery 1-2 times.
The method is only suitable for alkaline finger cells!
The procedure can be performed in any environmental conditions (with the exception of the freezer stage).

Method 3: heating

You can also restore the battery charge by heating. But be careful - the method is fraught with the explosion of the product!

The simplest is as follows:

Method 4: volume reduction

The method is rather incomprehensible and exotic at first glance. We need to reduce the size of the battery so that the charge in it recovers on its own.

What should be done for this? Reduce mechanically, make the volume of the case thinner. To do this, the battery is beaten against something solid - asphalt, wall, stone, brick, etc. Or they just trample on her with thick shoes. You can try to flatten it with an improvised tool - for example, pliers.

This method will be able to charge all finger-type batteries. I must say that such a "barbaric" method helps to restore the charge in some cases even up to 100%!

Method 5: exposure to solutions

We continue to analyze how to charge batteries at home. Within this method, two methods can be distinguished.

Instructions for the first:

Another way to charge batteries at home:

Using an awl or similar tool, poke holes in the battery caps next to the carbon rod. The depth of each should be within 3/4 of the height of the entire battery.
Pour liquid into the hole. You can take not ordinary water, but a solution of double vinegar or hydrochloric acid (no more than 8-10%).
For sufficient saturation of the base, you need to repeat the pouring procedure several times, maintaining time intervals so that the composition has time to be absorbed.
Finally, be sure to plug the holes. For these purposes, it is best to use resin or plasticine.
And now you can use the battery - its charge should be restored to 70-80%.

Now you know how to charge an alkaline finger battery. Choose any method that is convenient for you. And, most importantly, be extremely careful! The battery may explode from careless actions!

Often we miss good shots in the forest or at sea, we can be late or stumble in the dark, because a simple battery from a camera, clock or flashlight is suddenly discharged. When exactly the charge will be used up, it is difficult to say, except that this is not a Duracell model with an indicator. But don't despair! Thanks to a few tips, you can avoid unpredictable situations and take the planned photos with a digital camera, find out the exact time, illuminate the road, etc. In this article, we will show you how to charge batteries at home without a charger, which will make life much easier in unpredictable situations.

Be aware that to charge alkaline batteries, you can use a special charger that can relatively quickly restore a discharged object. But each charge session will reduce its life by about 1/3. In addition, leaks are possible.

Note! At home, you can charge: alkaline (alkaline) finger-type batteries. Not allowed: saline. The possibility of leakage or even explosion is not excluded!

Charging can be done different methods... Therefore, you should not throw out the element as soon as it has ceased to serve. A few recommendations - and he is back in the ranks. The first method, by applying which you can independently charge finger-type batteries without a charger. We connect the power supply to the network. Next, using the wires for connection, we connect the spent battery to the unit. Do not forget about the polarity: the plus is connected to the plus, and the minus is connected to the minus. It is quite simple to find where the “- \ +” of the discharged object is: they are marked on the case.

Having connected the battery to the power source, we wait until it heats up to fifty degrees, and turn off the power. Then we wait a few minutes for the heated object to cool down. Otherwise, it may explode. Then, while the AA is still warm, it needs to be charged in a different way. It consists in the following: we connect the power supply to electricity and disconnect. This takes about 120 seconds. Next, we place the object for charging in the "freezer" for 10 minutes, then we take it out and wait 2-3 minutes for it to warm up. That's it, the charge is restored right at home without a charger! You can safely use it for the same computer mouse.

Main rules:

The charge is not workable if you arrange + and - in a different way. On the contrary, the battery will run out even faster.
Charge the object at home 1-2 times.
Only simple AA alkaline batteries can be charged using the method described above.
The charge is feasible in any ambient temperature conditions.

Another charging method is the conventional heating method. But it is fraught with consequences (explosion). This way, again, small alkaline batteries can be recovered at home. You can also charge them in a simpler way - place the discharged objects in hot water, but for no more than 20 seconds, otherwise sad results are possible. Another uncomplicated way is to flatten or reduce the volume of the element with your own hands. So you can charge various finger-type batteries. There is an example when a person, upon expiration of the charge of a casting-ion battery, simply took out and trampled it, after which the charge indicators showed one hundred percent.

You can also restore the charge without a charger like this: we make 2 holes with an awl near each coal rod three-quarters deep from the height of the element itself. Pour liquid into them, and seal them, covering them with resin or plasticine. You can fill in not just a liquid, but an eight to ten percent solution of hydrochloric acid or double vinegar. Fill the solution several times for sufficient saturation. This method allows you to charge up to seventy to eighty percent of the initial capacity.

Video instruction on how to restore Duracell using telephone charging

Another way to charge the product: open the cover of the element with a knife. If the zinc cylinder, object shaft, and carbon powder are intact, then immerse the object in a salt solution. Its ratio is as follows: 2 tablespoons of table salt for several glasses of liquid. Next, boil the solution together with the element for about ten to fifteen minutes. Then we return to the place the gaskets responsible for sealing, and cover with wax or plasticine.

Alternative charging method

Imagine what happened: you started an electrochemical experiment, assembled a circuit - and the battery suddenly "sat down" and there is no spare battery. How to be? But this is not so bad. It is much worse when a pocket flashlight goes out on a dark evening, and even in the forest. And it’s a shame if the transistor receiver’s batteries fail just when your favorite song is being broadcast on the radio, or during a football match. But what can you do ...

Meanwhile, something can be done. If there is no spare battery, do not rush to throw away the old one, but try to "revive" it.

Many modern batteries - "Krona", "Mars", "Saturn", KBS and others - consist of elements of the manganese-zinc system. During operation, the negative electrode of these batteries - a zinc cup - gradually, but very slowly, dissolves, and the positive electrode, manganese dioxide MnO 2, is reduced to trivalent manganese hydroxide (its formula can be represented as MnOOH). It gradually covers the oxide grains, penetrates deep into the grains and closes access to the electrolyte. Also, half of the manganese oxide has not been used, and the element has already stopped working; zinc by that time remains even more, up to four-fifths! In a word, an almost usable battery has to be thrown away.

But if you remove the "shell" of MnOOH, then the electrolyte will again be able to flow to the grains and the battery will come to life. Just how to remove it? The easiest way is to knock on the battery properly with a hammer or stone. Then the grains inside the elements will crack, and the electrolyte will be able to penetrate into them again. This method is not so good, but in the forest, perhaps, there is no better one ...

If the battery fails at home, then manganese dioxide can be activated much more efficiently. Punch a hole in the zinc cup of the battery with a nail and dip the battery in water. The electrolyte in the cell is not liquid (it would be inconvenient), but thickened. It gets soaked in water, liquefies, and it is easier for it to penetrate to the grains of manganese dioxide. This simple trick allows you to increase the battery life by almost a third. But it can be simplified even more.

It is not necessary to fill the battery with water. It is enough just to punch a hole in the zinc cup. Manganese oxide in the cell is mixed with graphite powder to increase the electrical conductivity. As soon as air begins to flow inside, graphite will absorb oxygen, and along with manganese dioxide, another positive electrode will appear - the so-called air, on which oxygen is reduced. In short, a simple nail turns a zinc-manganese element into a zinc-air one!

To be fair, let's say that after such a procedure, the battery will be discharged with a small current - such are the properties of a homemade zinc-air cell. But it will serve for a very long time.

And the last thing: we will make the old battery almost look like a new one. To do this, the battery must be charged with an electric current, that is, it must be treated in the same way as with a battery. The reaction in the battery is reversible, and MnOOH can turn back into MnO 2.

Please note that not all batteries can be recharged, but only those in which the paste has not dried and the case is not damaged. And you need to charge not ordinary direct current how batteries are charged. In this case, zinc will deposit on the battery case in the form of branched dendrite threads, and very soon this will lead to what happens short circuit and the battery will fail. It must be charged with the so-called asymmetric current. To get it, it is necessary to rectify the alternating current not completely, for example: include a rectifier diode in the circuit and parallel to it - resistance (about 50 ohms). The voltage of the source should be about 12 V, so you cannot use the current directly from the network, you need a step-down transformer.

Manganese-zinc cells can be charged up to three times, while their capacity drops very slightly. And small, so-called button cells (they use a mercury-zinc system) can be recharged up to ten times. But it makes no sense to pierce them with a nail or knock on them with a hammer - there are practically no active substances left in these elements after the discharge.

O. Holgin. "Experiments without explosions"
M., "Chemistry", 1986

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