How much water should be added to the battery. Is it possible how much and how to add water into the battery. We will also analyze the maintenance option. Normal, boiled and from under the filter water in the battery

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Very often ask me the question of the car's battery, namely why does it need distilled water in it? What is it generally poured, what is the benefit or harm? Why do not say not to pour ordinary from under the crane, what will happen? And in general, how much you need to pour. As you can see, despite the prostate design of questions, it's just a lot, and they are all connected with this liquid. To be honest, then people who are a bit disassembled in the composition of the electrochemical liquid of the AKB, such questions will not be asked, but the beginners such information will be very useful, so read on ...


For a start, a small definition.

- This is a mandatory part of the electrochemical fluid, simply electrolyte, which performs a very important role, namely creates the composition of the desired density and properties. If there would be no water in the composition, the battery did not work, as it is necessary.

What does it mean? Yes, everything is simple - the electrolyte consists of 35% and 65% of distilled water. If you pour simply sulfuric acid, then her "mad" concentration would simply melt everything (let it not immediately, but she would do it for sure). Water reduces the concentration to the desired limit, then the acid begins to work in the creation, and not the destruction. Also, with such a relation, the processes of accumulation of electricity in electrolyte begin, when charging. What then allows this charge to spend.

What is distilled water?

And really, what is it? To be honest, this is a question 6 - 7 grade of a secondary school, where they begin to dig deep in physics and chemistry.

This is nothing but just "H2O" - that is, the pure composition of water, only two hydrogen atoms and one oxygen. There are no impurities and salts - absolute purity.

If you answer the question - why it is impossible to fill in the battery ordinary water From "under the tap", the answer is very simple:

The composition that flows with you from under the crane is difficult to call the "distiller" because not only the notorious H2O, but also a bunch of all impurities, and especially salts, lime (in low concentrations), chlorine, etc.

If you pour it into the battery, then the sedimentation of these impurities on the battery lead plates is inevitable, which will reduce the battery capacity. Thus, ordinary water will simply destroy your battery, so it is impossible to pour it.

Why exactly this ratio?

Now many can ask a question - why exactly the ratio of acid and distilled water? That is, one mass fraction of acid and two massive lobes of water.

This is done a few reasons:

  • Acids should be enough, because when the battery discharge it is spent, the electrolyte density drops - salts on the plates are distinguished. And when charging, water is consumed, the acid density is growing. If the acids are not enough, the process of charge - the discharge will not be so effective. Therefore, now the density of many acb is equal to about 1.27 g / cm3.
  • If the acids are not enough, the electrolyte will simply freeze at minus temperatures. The discharged battery can turn into a layering already at 3, - 5 degrees.
  • If you pour a lot of acid, much more (for example, 2 mass fractions, and water is one mass fraction), then it can adversely affect the plates. There will be more salts, as well as such a concentration will be faster to destroy the plates.

This combination is derived by experimentally, through a sufficiently large number of tests.

Why pour water into the battery, not electrolyte?

It is also simple - when working, the battery is heated (also the heating occurs in the summer, in the heat), during charges can boil. At these points from the battery, distilled water is destroyed - it is its normal state (evaporation when heated, simply turns into pairs). But the acid remains, it is not "flying" - respectively, the concentration of acid is growing, and the water concentration drops. The density can grow to 1.4 g / cm3. In order to bring the electrolyte inside the battery in a normal state, it is necessary to fill this evaporated water, so we add it, the acid is in the desired proportion.

If you add an electrolyte, then you simply mix, say - 1.4 and 1.27 (which you purchased) and you will get about 1.33 g / cm3 - what is already a lot! We remember the sediment of salts and the destruction of the plates.

So you need to add exactly distilled water, for the desired density, but not the electrolyte! When mixed, it forms the desired density.

Remember this rule! Justice for the sake of the water was added only to the serviced batteries, because evaporation is just a huge. But the maintenance-free batteries do not require such careful attention, because it is in a closed hermetic case - the liquid evaporates, rises and then falls into the sediment - the cycle closed.

How much water to add to the battery?

As we already figured out, if the maintenance-free battery is practically not how much, you can ride at least five years and never look into it - this is normal! But if your Akb is served, that is, the corks are unscrewed from above you need to constantly observe the level.

How many distilled water add a complex question - after all, in each case, it will be its value. It can vary from, because than the battery is more, the more electrolyte in it, which means water, you need to add more.

I advise you always in the car to have a liter bottle (on my old cars it went out for 1.5 - 2 months - in summer, in winter for 3 - 4 months) - Remember if the electrolyte level fell and your banks were denied, this is a critical condition, It is urgent to understand the level to close platinum. Otherwise, they can warm up and crumble.

Short video What should be the level.

The car is not alive, but capricious. Everyone knows that bad gasoline Or the diesel, antifreeze and oil in it will not fill. But after all, he needs the right - distilled! We understand how to use it with maximum benefit For your iron horse.

Many are perplexed, looking at the bottle with transparent liquid, marked "GOST 6709-72": they say, is it just water, how can it cost so expensive? It is impossible to drink it even!

Only here distilled water is not simple water, and purified by distillation through the distiller. It contains at least impurities and has low specific electrical appliances. That is why it is indispensable when servicing the car, and it is not necessary to save on it.

We offer four ways to use distilled water:

1. Top the distilled water into batteries

Pulling the water into the battery when swinging electrolyte - an ordinary, but very responsible procedure. Only distilled water should be used as the diluent, otherwise the battery life will be reduced by more than 2-3 times.

The fluid that is filled with a battery is a solution of sulfuric acid with additives, expensive and complex components like self-discharge inhibitors, barium salts and strontium. These additives in the electrolyte retain parts in pristine clean and provide stable work Battery.

Conventional water contains calcium, magnesium, iron, zinc salts and other impurities - almost half of the Mendeleev table! If you add it to the battery, a fragile chemical equilibrium will break. The plates of the electrodes will cover the flare, the battery will begin to "fool" - badly charged and not to keep the current. Because of this, problems will begin with the launch.

2. Dilute antifreeze distilled water when the cooling fluid is dropped

Surely you noticed that over time, the cooling fluid level in the cooling system drops, although there are no currents in it. It happens because water evaporates from antifreeze. During the year, up to 1 liter of coolant can disappear from the cooling system. The difference between the minimum and maximum level of antifreeze level is usually only 0.5 liters!

The lower the level of coolant, the greater the risk that the air will fall into the upper part of the radiator, the stove and cooling channels. At a critical moment, the engine will start overheating, and as a result - the risk of breakage will increase by an order. Therefore, if there are no leaks in the cooling system, and the fluid level fell, topping distilled water to restore the concentration of antifreeze. Find distilled water is much easier than a suitable cooling fluid. In addition, in this case you do not need to think about the compatibility of antifreeze, and it will be cheaper as a result.

By the way, the automaster use distilled water in order to rinse the cooling system when replacing antifreeze. This simple procedure prevents the formation of scale and other harmful deposits. And the purity in the cooling system is the key to the fact that there will be no problems in the engine.


3. Use distilled water instead of a glass washer

In the manual leading automakers, black on white it is written that only distilled water can be poured into the washer tank. Otherwise, there will be a lime flare, precipitate and even Tina in the wash system. Over time, these contaminants will scratch the nozzles of the sprayers and break their work.

Distilled water as a washer fluid can be used both in the solo version and dilute the concentrate washers (both summer and winter), which are much better coped with mud or insect traces.

4. Use distilled water at home

White lime bloom on black fabric after you logged out a completely clean thing - the usual problem of those who pour ordinary water from under the tap into the iron. Filtering and boiling with impurities in tap water do not cope. Pour distilled water into irons, and then no unpleasant surprises are terrible. It is also possible to fill it into the system of individual heating in a private house - it is also sensitive to harmful sediments.

And still distilled water recommend using electrocamine manufacturers in which the flame effect is formed with the help of light and water vapor. Like a car system, such devices are very demanding to the quality of the fluid and will work much longer, if you pour off distilled water in them.

Lead car batteries accumulate energy until a chemical reaction is underway between the electrolyte and conductive plates. When changing the density of the electrolyte, this process is broken. It doesn't matter for what reason the electrolyte has spoiled, the battery does not work. Replacing electrolyte, adjustment of the density or purchase of a new battery. In case the electrolyte has acquired a black color, there is a suspension of coal and scale - the battery will have to be changed.

The electrolyte is a mixture of sulfuric acid with water in a certain proportion. The concentration of the solution will be recognized by density measured by the area. The main indicator, even hundredths affect the ability of the electrolyte to work on the accumulation of energy.

Signs of unfit electrolyte:

The replacement of electrolyte in the battery will be effective when the cavities of the cans are examined, washed, the sulphate sediment is removed. If the plates are destroyed, the active substance matched - the battery is not maintained.

At home full replacement The electrolyte in the car battery occurs in the sequence:

  • Prepare enameled or glassware to drain electrolyte, personal protective equipment, work space, better, outdoors.
  • The battery is removed from the car, remove the plugs or drill holes in the non-serving battery, drain the liquid into the prepared container, using a pear or a syringe.
  • The battery is washed with distilled water repeatedly until the precipitate is removed. Perhaps you will have to remove lead sulfate if there is a precipitate on the plates. It is necessary to make sure that the active smelting is not crumbled, the coal grille is.
  • Slowly, with interruptions to pour the electrolyte of the desired density into each bank above the plates by 5-7 mm. Wait 2-3 hours to exit bubbles, measure the density of the electrolyte, bring to normal
  • Charging the battery after the electrolyte is replaced to carry a small current of 0.1 A, not allowing boiling. After a set of half a capacity, charging is cyclically.
  • Make sealing cans.

How much time to charge the battery? Charge the battery after replacing the electrolyte is needed carefully, as after deep discharge. The electrolyte replacement operation in the automotive battery is considered complete if it fully takes a current for a long time. Charging is carried out carefully, boiling in banks is unacceptable.

We offer to watch the video for the correct replacement of the electrolyte in the automotive battery.

Why can not top up electrolyte in battery

Did you measure the level of battery banks, is it below the norm? This means that part of the water evaporated. If this is served by the battery, you need to measure the level in each bank and add the electrolyte to the weather. In the abbrevatory battery, the bay mirror is visible.

The level has fallen, it means there is little water in solution and high density. The added electrolyte will increase the level, but the density of the solution will remain high. It is a detrimental for the battery plates, the battery life is reduced. Therefore, electrolyte should be adjusted to a level, topping distilled water.

Watch the video about electrolyte replacement rules.

In what cases to top up the electrolyte in the battery?

The electrolyte in the battery is attached when the container is reduced. At the same time, the measurement of the contents of each bank show the decrease in density. It is possible that sulfate occurred in the battery, the associated acid residue in PBSO4 is not involved in the reaction.

If the electrolyte extracted from the cans transparent, light, it can be used again, adding a correction solution, a density of 1.4 g / cm3. After removing the precipitate on the plates, the battery is filled with the previous electrolyte, but it is low concentration. Is it possible to bring the solution to the desired density, topping the electrolyte? What is the composition to take, and how much should I add to the battery of the corrective solution?

According to the technology, it is necessary to replace the portion of the weak composition strong. It is possible to add and withdraw the electrolyte from cans from cans, using a pear and a measuring cylinder. How to change the solutions in which proportion is seen from the table.

In this case, only the electrolyte for adjustment should be used. After the replacement operation, recharging is carried out for half an hour so that the fluids are mixed. Two hours after turning off the memory, the density is checked if necessary, the adjustment is repeated.

We offer to read the video, how to add electrolyte into the battery.

What to top up in battery, water or electrolyte

Under the operating conditions, the maintenance-free batteries do not require the control of the density and level of electrolyte. Served ACB have special traffic jams - access to each bank. They regularly check the quality indicator and level of electrolyte. Battery energy reserve is determined by the most weak element. Therefore, it is necessary to maintain the electrolyte density in all banks equal.

Density in the bank may decrease if sulfate began. Then the electrolyte adding does not help. The strong resistance of the slated plates does not miss the charge, the added acid will increase the deposit. In this case, the charge will restore sulfatization. That is why it is impossible to fill the electrolyte in the battery with the sulfate.

Does water to the battery? If the level of electrolyte in banks is low, it indicates intensive boiling battery during operation. It evaporates mainly hydrogen. From bare plates can turn an active melting, sulfatorium will occur, corrosion. Therefore, it is necessary to pour distilled water, but after that the battery needs to be charged for a complete cycle.

During the recovery period, the lead crystals are partially destroyed, the dense mortar is diluted, the electrolyte activity is restored. Tighten the electrolyte or water into the battery in the holes covered with corks, a small jet through the funnel. Charging starts not immediately to come out the air, the compositions mixed.

The density control should be made after half an hour after turning off the memory. With density deviations, perform adjustment.

When to add to the electrolyte, and when water

The question is how to add, if little electrolyte in the banks of the battery requires special lighting. Such fluids like electrolyte or distilled water, you need to fill in the battery correctly. The housing and funnel must be pure, poured fluid transparent, without suspension. You can add the electrolyte with water using a medical syringe without a needle if the adjustment is required to be insignificant.

When can I add water to the battery electrolyte? If in one or more banks the electrolyte level in the battery is low. This is due to the boiling of cans in an elevated temperature or deep discharge. The addition of distilled water is replenished with volume losses, the density of the electrolyte is reduced, the battery will be prevented.

Do I need to charge the battery after adding water, or replacing the electrolyte? Any internal balance change requires alignment and stabilization. After changing the concentration of the fluid, it is necessary to carry out a full charging cycle, make sure that the battery does not lose the container, stable voltage on the terminals, provides a starting current.

Is it possible to add the electrolyte into the battery if it is accidentally spilled out? How did it happen? Perhaps turned over the device. This is one of the few cases when the eliminated electrolyte is replaced exactly the same and even the temperature is customized. But still it will be necessary to recharge and check the density.

Watch the video how to correctly add the electrolyte into the battery. Water or electrolyte, what to top up?

How to add the electrolyte in the non-servant battery

Everything is much more complicated if it took to add water into the electrolyte of the car's non-servant battery. Through the translucent walls can be seen how much electrolyte in banks. But how to penetrate the housing of the non-servant battery?

There are models, penetrate inside in which you can cut off with a grinder upper cover. But such actions are needed if you need to remove scale and rinse the sludge at the bottom. In order to add liquid to the desired level drill the hole in the housing. Later it is sealed with epoxy glue.

Fully unqualified battery requires careful circulation, is afraid of deep discharges and unstable work Onboard battery. He declared 5-7 years old only in ideal conditions.

How to disassemble a non-liable battery to add electrolyte

In modern battery, such as Varta, you can see 6 plates under the decorative sticker, tightly releated into the housing. If you hide a tilt circle, you can detect the rubber plug below it. Then the ability to select the electrolyte sample will appear, check the density, adjust the composition. If there is no plug - in each bank, the hole is fine with a thin selection, and the water starts from the syringe, drops.

But if it is found that in banks on the plates, whitic stripes are sulfate. To clean the cavities, remove the precipitate at the bottom, you will need to open the cover with the saw.

Look at the video, how to add the electrolyte into a non-servant battery.

Add electrolyte in gel battery

Pull the water in the battery banks simply. It is necessary to remove the sticker on the body, remove the valves caps and roll 1.2 ml of water into each jar. Water should absorb in the jelly-shaped mass. Need time. After half an hour, if the water is above the surface of the battery plates - remove it with a filter or syringe.

Car batteries, as well as some other batteries require a special solution of sulfuric acid for normal operation.

Due to her, the recovery process is carried out after the battery discharge. Periodically, it is required to top up distilled water.

Is it possible to add water to a car battery and what

It is important to remember - the liquid used is not ordinary water, but purified from foreign inclusions. Members distillate. It should have no salts, other extraneous components. This is exactly what makes ordinary water conductor. Purified water devoid of all impurities is a dielectric.

The liquid present inside the battery is 65% conventional water.

Need to remember: the electrolyte level must be constantly monitored. If it decreased to a certain level - then it is required in obligatory Plot.

But it is preliminarily to decide what exactly fill in: distilled water or sulfuric acid (electrolyte).

The reasons for the drop in the level of only two:

  • the battery case is damaged - the electrolyte gradually flows out of it;
  • the liquid evaporates.

Moreover, the second case requires an "investigation." Since the boiling of the electrolyte serves as a signal about the malfunction of the Akb itself or the generator. Only after repair it is necessary to carry out a plot. Only special compositions should be applied - it is not allowed to use conventional water from under the tap.

Is it possible to pour electrolyte

Electrolyte represents special compositioncomprising water and sulfuric acid in the following ratio:

  • sulfuric acid - 35%;
  • distilled water - 65%.

Standard density that allows you to flow with all reactions inside the battery in normal mode, is 1.27 g / cm 3. It must be remembered - it is not allowed to add more than 35% to the acid. Since it affects the speed of charge, as well as other qualities.

For example, when electrolyte density 1.4 g / cm 3 may cause serious trouble - the plates will be damaged and gradually turn. But fewer acid is also not recommended. Since the liquid inside the battery will simply freeze at a negative temperature. It should be noted: The required density is a reference. It is not recommended to underestimate and overlapping.

It is necessary to add correctly: when boiling in the process of chemical reactions from the battery, it is water. In this case, the amount of sulfuric acid in bulk remains the same. To preserve the ratio of 35% / 65%, it is necessary to fill exactly the distilled water purchased in special stores. Use for these purposes the usual, boiled should not be - the battery simply fails as a result of a short circuit of cans.

The process of adding fluid to banks is technically not difficult, but requiring care and caution. Sulfuric acid is a serious threat to life, human health. It is advisable to avoid leakage. It can lead to serious trouble - burns. Tosses follow in a well-ventilated room.

When you need to add water and how much

It is important to constantly monitor the level of electrolyte in banks: and not only high, but also is dangerous. The battery case is usually supplied with a special level - the electrolyte must necessarily differ in a large or smaller side by 1-2 mm. Accordingly, under the reduced level, the density will grow significantly - which leads to gradual sulfation of plates. In the long run, this leads to their complete destruction.

At an elevated level, the density of the electrolyte decreases. As a result, the liquid can simply freeze under negative temperatures. The consequence of the freezing becomes hardened by the composition and breakage of the plastic case from the inside. It is necessary to remember: the danger of such a situation is that in the summer there are usually no problems with this. But in winter, distillates will be seized already at -20 / -30 0 S.

Because if you discovered half-empty banks in the battery - you need to urgently add distilled water. The usual use is contraindicated. Its presence will lead to a short circuit.

How to pour water

The fill process relatively simply and does not require special equipment. It will take prepare the following:

  • gloves are resistant in the devastating effects of sulfuric acid;
  • special funnel - it allows not to pour fluid during a tank;
  • glasses to protect the eyes - the ingress of sulfuric acid on the mucous membrane can cause serious trouble.

When everything is ready - you can start directly to the plot:

  • unscrew the plugs;
  • inserts a funnel;
  • carefully, up to a certain level, plunge distilled water.

Need to remember: if liquids are greater than necessary - it should be removed using a special pear. You can buy it in any automotive store. The basic condition - the material must necessarily be resistant to the acidic environment.

How to pour water into a non-servant battery

Usually, a non-servant battery does not need to top up the liquid. In the manufacture, the calcium technology is used - water loss is minimal. But after 5 years it will be necessary to add deest. The process of adding fluid into the maintenance-free battery:

  • it is necessary to determine the level of the electrolyte - for this it is enough to swing the battery from side to the side;
  • we find out what height plates are located - it is possible to do this with a flashlight (just enlighten the body);
  • it is necessary to retreat from the plates about 2 cm - after which the hole is drilled with a diameter of 8 mm;

  • using a conventional syringe and a needle is added liquid.

The process of filling fluid inside the case rechargeable battery It does not constitute serious problems. It is just important to observe the level.

We all heard with you - that you can fill in the battery only distilled water and no more! But why? Why you can not pour, say the usual from under the tap, or boiled pronounced through the filter and so on? This is a very elementary question - it is worth a drop in high school chemistry and everything is resolved at once. For those who walked this lesson, or forgot, today I want to tell in detail - why the "ordinary" from under the crane can not be pouring, there will be interesting video At the end, so we read ...


Akb Despite all its simplicity, requires a certain accuracy both in and in service as a whole. This one of these conditions is it precisely if it is presented, the correct job is guaranteed if something else is flooded, the battery may not work at all

Threads of electrolyte

I want to recall a little, how the battery works and what is the role of electrolyte. Briefly remind - there are minus (lead) and positive (lead dioxide) plate. Between them fill special fluid Electrolite - it consists of approximately 65% \u200b\u200bof distilled water and 35% sulfuric acid (this corresponds to density 1.27g / cm3).

When the battery begins to be cut (We connect the load), then with the interaction of lead and sulfur oxide interacts, lead sulfates are beginning to form salts on the plates. Electrolyte density drops.

When charging there is a reverse process - Sulfates are destroyed, the density grows again to the 1.27. But if you run acb and discharge to zero (), sulfates can no longer collapse (the crystals of these salts will become durable), the battery will lose the container - this process.

In there are still added "Calcium" - if again, this type, discharge to zero, in addition to lead sulfates, calcium sulphates are formed.

It is worth remembering - that any substances, whether in plates or electrochemical fluid, under certain conditions may have certain impacts on the final battery.

Simple words - the cleaner, the better, inside there should be only what chemists and engineers laid

Normal, boiled and from under the filter water in the battery

Before talking about ordinary water, I want to say a few words about distilled. Need to remember the course of physics that he reads us - distillate practically does not conduct electricity , He is very clean in it, there is little (practically no) salts, metals, minerals and other things - this is important!

In this way, we realized that inside should only beat clean fluids. But the usual water is so impossible. I hit the Internet and found from what the drinking (the usual, which flows from under the tap) liquid was a little shocked.

About 30 - 33 species of various minerals, metals, salts, etc. Insert you a screenshot

As you can see about 1000 mg / l minerals alone (about 1 gram). Such a liquid perfectly carries out an electric current, it falls the precipitate.

But most importantly, we do not know how it will lead - with sulfuric acid, lead, calcium which connections will be formed. After all, we will say minerals (1000 mg / l), this can be calcium, and it forms sulfate at discharges (which are practically insoluble in water and sulfuric acid).

All this very negatively affects the work of the battery, the sulfates of minerals on the plates are formed, metals can increase resistance and contribute to destruction.

Simple words - ordinary water, just kill your battery, after a short time, usually it is a couple of months, as you will exploit your car

Boiled water - It differs from the usual only in that there are no organic compounds in it (usually it is bacteria that die during boiling), but the remaining elements are not going anywhere. Therefore, it is also impossible to pour it!

Missed through filter - Now it's just a bunch of various filters (including domestic) I do not take it now about the industrial possible from under them really goes almost distillate. But the household is also not capable of cleaning with 100% water, some part of the substances will definitely remain. So after the filter, it is also impossible to pour into the battery!

Simple words, only distillate - and nothing else!

Outcome - What will happen to the battery?

Well, let's, in conclusion, on the items will summarize (so to say a memo), which will be pouring the usual, boiled, filtered (ordinary household filter) water:

  • Acceleration of the electrolysis process - Fast Water Loss
  • The formation of precipitate (minerals), possibly sulfates on the plates - decrease in capacity
  • Destruction of plates, from impurities of metals - failure
  • Accelerated self-discharge - due to metals
  • An increase in the resistance of the plates
  • Change of electrical conductivity as working fluid So metals
  • Increase the density of electrolyte (some substances can contribute to this)
  • Precipitate can move elements

Separately, I want to tell those - who writes that the ordinary water will smack the plate, it is not true, nothing will be the battery will work as worked only accelerate the electrolysis process, that's all.

All this will lead to your exit, even fresh battery. Remember it! It is not necessary to experiment. However, some dishonest sellers are pouring ordinary water from under the tap, instead of a distilled, thus deceiving you. It is already very difficult to protect yourself - it's worth looking at the bottle so that there was no sediment in it, or buy in pharmacies (here all the control is more closely), but you can do it yourself even at home, there is nothing difficult here, and you will be sure you will be sure 100% (talk about it in the next article).

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