Repair a maintenance-free car battery. How to restore a car battery: do it yourself

20.10.2019

4 ways to restore a car battery

Batteries are a stable source of constant voltage, they are indispensable in individual designs and devices. But of course there are no eternal things on earth, and with batteries, time passes and they are no longer suitable for use, what should I do? Throw it away and buy a new one? You can of course, but it's better to try to repair them. On the market you can find a sea of batteries of different types of capacities and voltages. Mainly use acid alkaline and lithium batteries. Today we will talk about ways to repair such types of batteries as lead. Acid batteries - more commonly referred to as lead-helium batteries. Two lead plates are immersed in sulfuric acid, one plate is positive, the other is negative. Such batteries are most often used in automotive technology and in flashlights. They have a relatively short lifespan. They can be repaired (restored) in several ways.

The first method of multiple charging with a small current rating with short time intervals between charges. By the end of the first and subsequent charges, the voltage on the battery gradually increases, and it stops accepting a charge. During the break, the electrode potentials on the surface and in the depth of the mass of the plates are equalized, while the denser electrolyte from the pores of the plates flows into the interelectrode space and reduces the voltage on the battery during temporary breaks. During a cyclic charge, as the battery gains capacity, the density of the electrolyte begins to increase. When the density becomes normal, and the voltage on one section reaches 2.5-2.7 volts (the nominal value of each can is 2 volts), the charge is stopped. Repeat this cycle 5-8 times. The charging current is ten times less than the battery capacity, let's say the battery has a capacity of 1000mA / h, then the charge current should be between 80 and 100 milliamps.

The second way to restore acid batteries is to replace the electrolyte. We drain the electrolyte from the battery and rinse the battery with hot water several times. Next, take 3 teaspoons of soda and dilute in 100 ml of water. We boil water and immediately pour boiling water into the battery, wait 20 minutes and drain. This process is repeated several times. Then rinse the battery 3 times with hot water. This recovery method is very convenient to use for car batteries. At the last stage of work, we pour a new electrolyte and charge the battery for 24 hours, the repaired battery is charged once a day for 10 days, the charge lasts 6 hours, the charger parameters are 14-16 volts, the charge current is 10 amperes (no more).

The third way is reverse charging. To do this, you need a powerful voltage source (a welding machine, for example), the voltage of the charger is 20 volts, and the current strength is 80 amperes or more, we open the plugs of the cans and charge them only back - we attach the plus of the power source to the minus of the battery, and the minus of the power source to the plus battery. At the same time, the battery will boil, but do not pay attention, we charge for 30 minutes, then drain the electrolyte, rinse with hot water and pour in a new electrolyte. We take an ordinary charger with a current of 10-15 amperes and charge the repaired battery for 24 hours, just do not mix up the polarity, since the factory positive pole will already be negative, and the negative positive pole, we will talk about the repair and restoration of alkaline and lithium batteries in the next article, stay with us - Artur Kasyan (AKA).

Fourth way is highly efficient and fast (the battery is restored in less than an hour). A discharged battery is pre-charged. The electrolyte is drained from a charged battery and washed 2-3 times with water. An ammonia solution of Trilon B (ETHYLENEDIAMINETETRAACETACETE sodium), containing 2 weight percent Trilon B and 5 percent ammonia, is poured into the washed battery. The time of desulfation with a solution is 40-60 minutes. The process of desulfation is accompanied by the evolution of gas and the appearance of small splashes on the surface of the solution. The cessation of gas evolution indicates the completion of the process. In case of strong sulfation, the treatment with the solution should be repeated. After treatment, the battery is washed at least 2-3 times with distilled water, then filled with an electrolyte of normal density. The flooded battery is charged with charging current to the nominal capacity according to the recommendations in the passport. Regarding the preparation of the solution, it is necessary to contact enterprises with chemical laboratories. Store the solution in a dark place in a vessel with a hermetic lid to prevent evaporation of ammonia. http://www.handiman.ru/
December 18, 2012, 09:58
battery repair,
battery recovery

All batteries have an expiration date, with numerous charge-discharge cycles and many hours worked, the battery loses its capacity and holds a charge less and less.
Over time, the capacity of the battery drops so much that its further operation becomes impossible.
Probably many have already accumulated batteries from uninterruptible power supplies (UPS), alarm systems and emergency lighting.

Lead-acid batteries are found in many household and office equipment, and regardless of the battery brand and manufacturing technology, whether it is a regular serviced car battery, AGM, gel (GEL) or a small flashlight battery, they all have lead plates and an acidic electrolyte.
At the end of operation, such batteries cannot be thrown away because they contain lead, basically they are waiting for the fate of recycling where lead is extracted and processed.
But still, despite the fact that such batteries are mostly "maintenance free", you can try to restore them by returning them to their previous capacity and use them for some more time.

In this article, I will talk about how restore 12v battery from UPSa on 7ah, but the method is suitable for any acid battery. But I want to warn you that these measures should not be taken on a fully working battery, since on a working battery you can only achieve capacity recovery by using the right charging method.

So we take the battery, in this case old and discharged, pry the plastic cover with a screwdriver. Most likely it is point glued to the body.

Lifting the lid, we see six rubber caps, their task is not to maintain the battery, but to bleed the gases formed during charging and operation, but we will use them for our purposes.

We remove the caps and in each hole, using a syringe, pour 3 ml of distilled water, it should be noted that other water is not suitable for this. And distilled water can be easily found in a pharmacy or at a car market, in the most extreme case, melt water from snow or pure rain water may come up.

After we have added water, we put the battery on charge and we will charge it using a laboratory (regulated) power supply.
We select the voltage until some values \u200b\u200bof the charging current appear. If the battery is in poor condition, then the charging current may not be observed, at first, at all.
The voltage must be increased until the charging current appears at least 10-20mA. Having achieved such values of the charging current, you need to be careful, since the current will increase over time and you will have to constantly reduce the voltage.
When the current reaches 100mA, there is no need to reduce the voltage further. And when the charge current reaches 200mA, you need to disconnect the battery for 12 hours.

Then we reconnect the battery for charging, the voltage should be such that the charging current for our 7ah battery is 600mA. Also, constantly observing, we maintain the specified current for 4 hours. But we make sure that the charging voltage, for a 12-volt battery, is no more than 15-16 volts.
After charging, after about an hour, the battery needs to be discharged to 11 volts, this can be done using any 12-volt light bulb (for example, 15 watts).

After discharging, the battery must be charged again with a current of 600mA. It is best to do this procedure several times, that is, several charge-discharge cycles.

Most likely, it will not be possible to return the nominal one, since the sulfation of the plates has already reduced its resource, and besides, there are other harmful processes. But the battery can continue to be used in normal mode and the capacity for this will be enough.

Regarding the rapid wear of batteries in uninterruptible power supplies, the following reasons were noticed. Being in the same case with an uninterruptible power supply, the battery is constantly subject to passive heating from active elements (power transistors), which by the way heat up to 60-70 degrees! Constant heating of the battery leads to rapid evaporation of the electrolyte.
In cheap, and sometimes even some expensive UPS models, there is no charge temperature compensation, that is, the charge voltage is set to 13.8 volts, but this is acceptable for 10-15 degrees, and for 25 degrees, and sometimes much more in the case, the charge voltage should be a maximum of 13.2-13.5 volts!
It's a good idea to move the battery out of the case if you want to extend its life.

It also affects the "constant small under charge" by an uninterruptible power supply, 13.5 volts and a current of 300mA. Such recharging leads to the fact that when the active spongy mass inside the battery ends, a reaction begins in its electrodes, which leads to the fact that the lead of the down conductors on (+) becomes brown (PbO2) and on (-) it becomes "spongy".
Thus, with a constant charge, we get the destruction of current leads and the "boiling" of the electrolyte with the release of hydrogen and oxygen, which leads to an increase in the concentration of the electrolyte, which again contributes to the destruction of the electrodes. It turns out such a closed process that leads to a rapid consumption of battery life.
In addition, such a charge (recharge) with a high voltage and current from which the electrolyte "boils" - converts the lead of the current leads into powdered lead oxide, which crumbles over time and can even close the plates.

With active use (frequent charging), it is recommended to add distilled water to the battery once a year.

Top up only on a fully charged battery with control of both electrolyte level and voltage. In some case, do not overfill, it's better not to pour it because you can’t take it back, because by sucking out the electrolyte, you deprive the battery of sulfuric acid and, as a result, the concentration changes. I think it is clear that sulfuric acid is non-volatile, therefore, in the process of "boiling" during charging, it all remains inside the battery - only hydrogen and oxygen come out.

We connect a digital voltmeter to the terminals and pour 2-3 ml of distilled water into each jar with a 5 ml syringe with a needle, while shining a flashlight inside to stop if the water is no longer absorbed - after pouring 2-3 ml, look into the jar - you will see how the water is quickly absorbed, and the voltage drops on the voltmeter (by fractions of a volt). We repeat topping up for each jar with pauses for soaking for 10-20 seconds (approximately) until you see that the "glass mats" are already wet - that is, the water is no longer absorbed.

After topping up, we inspect whether there is an overflow in each battery bank, wipe the entire case, put the rubber caps in place and glue the lid in place.
Since the battery shows about 50-70% charge after topping up, you need to charge it. But charging must be carried out either with an adjustable power supply or with an uninterruptible power supply or a standard device, but under supervision, that is, during charging it is necessary to observe the condition of the battery (you need to see the top of the battery). In the case of an uninterruptible power supply, for this you will have to make extension cords and bring the battery out of the UPSa case.

Place napkins or plastic bags under the battery, charge up to 100% and see if electrolyte does not leak from any can. If suddenly this happened, stop charging and remove smudges with a napkin. Using a napkin soaked in a soda solution, we clean the case, all the cavities and terminals where the electrolyte has got in order to neutralize the acid.
We find the jar where the "boiling" came from and see if electrolyte is visible in the window, we suck off the excess with a syringe, and then carefully and smoothly fill this electrolyte back into the fiber. It often happens that the electrolyte after topping up is not evenly absorbed and boils up.
When recharging, we observe the battery as described above, and if the "problem" battery bank starts to "poured out" again during charging, excess electrolyte will have to be removed from the bank.
Also, under inspection, at least 2-3 full discharge-charge cycles should be done, if everything went well and there are no smudges, the battery does not heat up (light heating does not count when charging), then the battery can be assembled into a case.

Well, now let's take a closer look cardinal methods of resuscitation of lead-acid batteries

All the electrolyte is drained from the battery, and the insides are washed first a couple of times with hot water, and then with a hot soda solution (3 tsp of soda per 100 ml of water), leaving the solution in the battery for 20 minutes. The process can be repeated several times, and finally thoroughly rinsed from the remnants of the soda solution - a new electrolyte is poured.
Then the battery is charged for a day, and after, for 10 days, for 6 hours a day.
For car batteries with a current of up to 10 amperes and a voltage of 14-16 volts.

The second way is reverse charging, for this procedure you will need a powerful voltage source, for car batteries, for example, a welding machine, the recommended current is 80 amperes with a voltage of 20 volts.
They do a polarity reversal, that is, plus to minus and minus to plus, and for half an hour they “boil” the battery with its native electrolyte, after which the electrolyte is drained and the battery is washed with hot water.
Then a new electrolyte is poured in and, observing the new polarity, they are charged with a current of 10-15 amperes for a day.

But the most effective way is done with the help of chem. substances.
From a fully charged battery, the electrolyte is drained and, after repeated washing with water, an ammonia solution of Trilon B (ethylenediaminetetraacetic acid sodium) containing 2 weight percent Trilon B and 5 percent ammonia is poured. There is a process of desulfation for 40 - 60 minutes, during which gas is released with small splashes. By the cessation of such gas formation, one can judge the completion of the process. In case of particularly strong sulfation, the ammonia solution of Trilon B should be refilled, removing the spent one before that.
At the end of the procedure, the inside of the battery is thoroughly washed several times with distilled water and a new electrolyte of the desired density is poured. The battery is charged in the standard way to the nominal capacity.
Regarding the ammonia solution of Trilon B, it can be found in chemical laboratories and stored in sealed containers in a dark place.

In general, if you are interested, the electrolyte composition produced by Lighting, Electrol, Blitz, akkumulad, Phonix, Toniolyt and some others is an aqueous solution of sulfuric acid (350-450 g per liter) with the addition of sulfate salts of magnesium, aluminum, sodium, ammonium. Gruconnin's electrolyte also contains potassium alum and copper sulphate.

After recovery, the battery can be charged in the usual way for this type (for example, in UPSe) and not allowed to discharge below 11 volts.
Many uninterruptible power supplies have a "battery calibration" function with which you can carry out discharge-charge cycles. By connecting a load of 50% of the UPS maximum at the output of the uninterruptible power supply, we launch this function and the uninterruptible power supply discharges the battery to 25% and then charges up to 100%

Well, in a very primitive example, charging such a battery looks like this:
A stabilized voltage of 14.5 volts is supplied to the battery, through a high-power variable wire resistor or through a current stabilizer.
The charge current is calculated using a simple formula: divide the battery capacity by 10, for example, for a 7ah battery it will be - 700mA. And on the current stabilizer or using a variable wire resistor, you must set the current to 700mA. Well, in the process of charging, the current will begin to fall and it will be necessary to reduce the resistance of the resistor, over time, the resistor knob will come all the way to its initial position and the resistance of the resistor will be zero. The current will further gradually decrease to zero until the voltage on the battery becomes constant - 14.5 volts. The battery is charged.
For more information on the "correct" charging of batteries, see

light crystals on the plates - this is sulfation

A separate "bank" of the battery was subjected to constant undercharging and, as a result, was covered with sulfates, its internal resistance grew with each deep cycle, so that, during the charge, it began to "boil" before anyone else, due to loss of capacity and removal of electrolyte into insoluble sulfates.
The plus plates and their grids turned into powder in consistency, as a result of constant recharging by an uninterruptible power supply in the "stand-by" mode.

Lead-acid batteries except for cars, motorcycles and various household appliances, where they are not only found in flashlights and watches, and even in the smallest electronics. And if you got into the hands of such a "non-working" unmarked lead-acid battery and you do not know what voltage it should give out in working condition. This can be easily recognized by the number of cans in the battery. Locate the protective cover on the battery housing and remove it. You will see gas bleed caps. by their number it will become clear how many "cans" this battery is.
1 bank - 2 volts (fully charged - 2.17 volts), that is, if cap 2 means a 4 volt battery.
A fully discharged battery bank must be at least 1.8 volts, you can’t discharge it below!

Well, in the end I will give a little idea, for those who do not have enough money to buy new batteries. Find companies in your city that deal with computer equipment and UPSs (uninterruptibles for boilers, batteries for alarm systems), agree with them so that they do not throw away old batteries from uninterruptibles, but give them to you, possibly at a symbolic price.
Practice shows that half of AGM (gel) batteries can be restored if not up to 100% then up to 80-90% for sure! And this is a couple more years of excellent battery life in your device.

Without a battery, a vehicle becomes worthless real estate—only rare modern cars can be kick-started. The battery is the source of power for both the starter and many electronic devices that are responsible for the comfort or safety of the car. But, unfortunately, any battery has a certain expiration date, after which it becomes unusable. As a rule, failed batteries are replaced with new ones, however, in some cases, it is possible to repair the power source, after which it will serve its owner for some more period of time. How to restore the battery yourself - read further in the article.

A battery with a nominal voltage of twelve volts consists of (usually six) autonomous batteries (that is, cans) of lower voltage (two volts), which are assembled in one housing and connected in series to each other.

How Batteries Work

The principle of operation of the battery is very simple - when a load is connected, the charged particles in the battery begin to move, which entails the appearance of a current. When charging from a charger or generator, the charge voltage exceeds the nominal value of the battery voltage and the particles move in the opposite direction.

Types of car batteries

Today, there are three types of car batteries - serviced, maintenance-free and partial service.

Nowadays, the first type is quite rare. The body of such batteries is made of ebonite, and is sealed from the outside, for example, with mastic. In serviceable batteries, it is possible to replace any component.

Maintenance-free batteries do not require any human intervention during their entire service life. It uses a special design of the condensing system and plates. These batteries are today recognized as the highest quality, so their cost is very high.

The most common are partial maintenance batteries. The essence of maintenance of such batteries is reduced only to maintaining the required level of electrolyte and controlling its density.

In addition, batteries differ in the technologies used in their production:

The best most common type of car battery

The most common car batteries are acid. Among the advantages of this type of batteries, one should note their low cost, low self-discharge, and the absolute absence of the “memory effect”.

Acid battery, device and principle of operation

Externally, an acid battery looks like a closed plastic case, from which two terminals emanate. Inside, the case is divided into six sections, where the working elements of the battery are located - positive and negative lead plates, on which the active mass is applied. They are located variably. In order to exclude the possible contact of these plates, a separator is located between them.

The plates are combined into blocks, each of which has an output jumper, that is, a barette connected to the bridge. Thanks to the barette, the blocks of each can are interconnected into one common bridge, which has an output to the terminal.

The return of electricity from the battery is carried out as a result of chemical reactions, because the banks are filled with electrolyte. By itself, the battery does not generate electricity, it, in fact, is simply a store of electricity. When the battery is charging, the electrical energy supplied to the terminals from the generator or charger is converted into chemical energy. During discharge, the opposite effect occurs.

Serviced and maintenance-free batteries, what is the difference

Serviceable batteries have small plugged openings located in the top section of the battery case. Maintenance-free batteries are not equipped with such holes, they have only a small hole for venting gases. Their main difference is that serviced batteries require some care from the owner, which is not convenient enough. Therefore, nowadays they are used very rarely.

Battery faults

All battery failures can be divided into internal and external. Each car owner can independently detect and eliminate them, but it depends on the degree of damage.

external how to fix

There are only two external faults - strong oxidation of the terminals, as a result of which the battery is poorly connected to the on-board network, and a breakdown of the case (either as a result of external influence on it, or a crack in the case caused internal malfunctions).

As for the terminals, there is not much to say here. See if they have a significant layer of oxides on them. If this layer is present, it is cleaned off.

If there is a breakdown in the case, then it is quite simple to detect it - electrolyte will flow out of it. A crack, if any, can be repaired, however, in the case when the battery is serviceable. The electrolyte is drained from the battery, after which the crack is closed. To do this, use a soldering iron and a piece of plastic. First, the crack itself is soldered, and then the prepared plastic is soldered on top for greater confidence in the quality of the work done. At the last stage, we check the tightness of the case by pouring distilled water into it.

internal faults

There are significantly more internal faults that occur in the battery, and most of them cause harm to the battery, which cannot be eliminated. One of the most common battery problems is plate sulfation.

battery sulfation, causes, is it possible to eliminate

Incorrect operation of the battery leads to sulfation of the battery - long-term storage of the battery in a discharged state, constant undercharging of the battery, frequent deep discharges, so it is necessary to select the battery according to the brand of the vehicle. In fact, sulfation is the appearance of lead sulfate on the surface of the plates, due to which the electrolyte is not able to penetrate into the active mass, so a certain part of this mass is no longer able to react.

The resistance inside the battery increases, which entails a decrease in capacity. As a result, the battery cannot take a full charge and runs out quickly. Sulfation of the plates in the early stages can be eliminated, however, if it is deep, the battery cannot be repaired.

shedding of battery plates, causes, how to eliminate

There are also such breakdowns as shedding from the plates of the active mass, with a possible further short circuit. With mild shedding, as a rule, washing the batteries with distilled water helps. It is also possible to bloat the battery as a result of freezing of the electrolyte. This happens if the discharged battery was in severe frost. After freezing, the car battery cannot be restored.

Ways to eliminate sulfation (step by step instructions) using the charge-discharge method

Several methods are used to eliminate plate sulfation. The first, most common way is to conduct a control-training cycle (abbreviated CTC). The use of this method will make it possible to eliminate sulfation at an early stage, as well as restore battery capacity.

The essence of this method is to conduct a charge-discharge cycle. First, the battery is fully charged. The battery is charged with a current that is equal in strength to ten percent of the rated capacity, that is, with a battery capacity of sixty Ah, the current should be six Amperes. After charging, density is checked in each jar.

For a fully charged battery, this indicator should be 1.27. When this value is lower, it will be necessary to bring the density to the required value with further recharging of the battery for half an hour to mix the electrolyte.

After charging, a control discharge is performed, for which a source of energy consumption is connected to the battery terminals. In this case, the energy consumption of the connected consumer must not exceed ten percent of the capacity. As a consumer, it is best to use an automotive incandescent lamp with a certain power.

You can calculate the required power by multiplying the voltage and current. The current strength in the calculation process is taken based on the battery capacity. That is, in the process of calculating the power required to discharge the battery by sixty Ah, the current strength is taken as six amperes, this value is multiplied by 12 V. As a result, we get a power value of 72 watts. Approximately this power should be at the lamp.

The battery is then discharged with a lamp while the voltage is systematically measured. When discharging the battery, it is necessary to achieve a decrease in the voltage at the battery terminals to 10.2 V. This voltage value will indicate a complete discharge of the battery. In this case, it is necessary to measure the time during which the battery is discharged. For a new battery, this value should be approximately ten hours. The shorter the discharge time, the more the battery has lost its capacity. You can not leave a discharged battery for a long time, it must immediately be put on charge until the charge is fully restored.

When this event is performed, the battery capacity will be restored, and as a result of the decrease in sulfation, the internal resistance will decrease.

Tools, fixtures, consumables

To conduct a control and training cycle, you will need a charger, a voltmeter, a hydrometer, as well as a source of electrical energy consumption.

Table of the ratio of electrolyte density to the degree of battery charge

A method for eliminating sulfation using reverse currents, advantages and disadvantages

The second way to remove sulfation is to use reverse currents while charging the battery. The disadvantage of this method is the need for special equipment - a reverse current generator. The essence of this method is to charge the battery for a long time with low currents. So, with insignificant sulfation, the battery is charged with an insignificant current - 0.5-2 A. Charging is carried out for a long period, and in some cases it can reach fifty hours.

The end of the desulfation process is the irremovability of the voltage at the terminals and the unchanged density of the electrolyte for two or more hours.

Flushing the battery with subsequent charging, the pros and cons

The third method used to restore the battery is to flush the battery and then charge it. However, this method is lengthy and its implementation can drag on up to a month. The electrolyte is drained from the battery, and distillate is poured in its place. The battery is then charged at 14V.

After the distillate boils, the voltage decreases slightly. The main task is to maintain a boil in the battery, but not intense. The density of the distillate will increase over time due to the dissolution of lead sulfate in water. Then the water is drained and a new one is poured, and the battery is again put on charge at a low voltage.

It is necessary to ensure that bubbles appear in the distillate, but it is not necessary to bring it to a boil. The battery should be kept on charge until the density stops changing for several days.

Chemical way (the fastest) to remove sulfation (step by step instructions)

The fastest method of removing sulfation is chemical. It boils down to washing the battery with a solution of Trilon B and ammonia. Before washing with a solution, the battery is charged, the electrolyte is drained from it and washed with distillate. Next, an aqueous solution is poured into the jars with the addition of five percent of the volume of water ammonia and two percent - Trilon B.

This and sulfate solutions react, which will be accompanied by splashes and boiling. As soon as the boiling is over, the solution is drained, and the jars are washed with water, after which the electrolyte is poured and the battery is charged.

All battery malfunctions do not appear on their own, they occur as a result of careless operation and ignoring systematic maintenance. The battery does not require a lot of attention. It is enough to charge it with a charger at least once every six months.

If the battery is serviceable, before charging it is necessary to pay attention to the electrolyte level and, if necessary, restore it. After charging, check the density of the electrolyte in each cell. There should not be significant differences in density values between banks. A minimum difference between them is allowed.

Before installing a new battery on the car, check the voltage that the alternator is producing to prevent overcharging. In addition, when installing a new battery, it must be well secured to prevent possible damage to the case.

How to find high-quality auto products at a reasonable price and free shipping on Aliexpress

Step 1 - register on the site, for which you need to enter the last name, first name and e-mail address, as well as come up with a password. To prevent your account from being blocked, it is important to confirm your email within 24 hours.
Step 2 - fill in the delivery address. This can be done in your profile. It is important to fill in all fields with Latin characters.
Step 3 - near the category column, click on the link "View all" (in the upper left corner of the site).
Step 4 - select the category "Cars and motorcycles".
Step 5 - then you will see eight sub-categories, namely: motorcycle parts; spare parts for cars; tools, maintenance; automotive electronics; transport and accessories; salon accessories; external accessories; road safety. From these categories, select the required one, depending on the type of product you are looking for. For example, salon accessories.
Step 6 - enter keywords in the search box, for example, car seat covers.
Step 7 - at the top of the page you will see a toolbar with which you can sort the results and filter out the unnecessary. For example, we select only retail products and products with free shipping. As for sorting the results, it is better to choose sorting by seller rating. Why? Yes, because if the seller has a high rating, then his goods are of high quality, correspond to the description and are inexpensive. By the way, do not forget to read the reviews of other buyers.
Step 8 - on the product description page, you need to select the quantity, size and color you need.
Step 9 - if you want to proceed to pay for the goods right now, click on the "Buy Now" link, if you want to pay for the goods a little later, click "Add to Cart".
10 and the last step - payment for the goods.

The battery is one of the main devices of a car, which tends to wear out during operation. Therefore, from time to time, car owners have to change the battery due to the fact that it cannot perform its functions. You can find out more about how to restore a car battery at home, below.

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Small current recovery

How to bring back to life and revive your car battery? This device provides an uninterrupted current transfer to power the electrical equipment of the vehicle. Accordingly, without this device, the normal operation of the devices will be impossible, especially since over time the battery can no longer hold the nominal charge required for power supply. Not all batteries that do not work well need to be thrown away - you can try to reanimate the old battery. This will avoid unexpected financial costs.

The device and designation of the components of the battery design

If we talk about acid-alkaline batteries, then the structure is several positive and negative lead plates in sulfuric acid. Today, devices of this type are the most common among cars used in the countries of the former USSR. Despite its prevalence, the service life of batteries is lower.

Restoring a car battery with your own hands can be carried out using the technology of repeated recharging. In this case, a small current must be used. The charging procedure with a recovery charger must be carried out intermittently. Starting from the first charge of the device and to the last, the voltage level that is present in the battery will gradually increase. As a result, the device should stop discharging.

The charger and recovery device must work with pauses, this will allow the potentials of the electrodes that are in the plates to equalize. The electrode recovery procedure itself is safe. The use of a charge-recovery device with pauses will ensure the transition of the most dense electrolyte from the plates into the space between the electrodes.

Unscrewing the plugs of battery cans

As a result of using the partial discharge technique, it contributes to an increase in the density of the electrolyte. The owner of the car is required to wait for the moment at which the voltage will correspond to 2.5 volts, and the density parameter will correspond to the nominal value. And in this case, we must not forget that the car battery needs a break, so the charger and recovery device must be turned off periodically. For complete resuscitation, the cyclic recovery procedure must be repeated 8 times. It should be borne in mind that the indicator of the current used should be 10 times less than the capacity of the charged battery.

Electrolyte replacement

You can restore the battery by replacing the electrolyte, this method has proven its effectiveness in practice. To replace the electrolyte, the liquid from the structure must be completely drained, after which the system must be flushed with warm or hot water. After washing, you will need a few tablespoons of ordinary baking soda - 3 tablespoons are diluted with 100 ml of water, while it is advisable to use a distillate.

Filling the soda solution into the battery

The mixed solution must be boiled and poured into the structure instead of the drained electrolyte, after which the battery should be left for 20-30 minutes. Then drain the liquid from the device, and repeat the procedure three more times. After the last cycle, rinse the structure again with hot water, preferably several times.

The method is relevant for many types of batteries. After the structure is washed, you need to pour a new electrolyte into it and put the battery on charge. The recovery charger must be turned on for 24 hours.

Then the device is cyclically charged - for 6 hours daily for 10 days. At the same time, we note that the memory itself must have such properties - the voltage parameter should be no more than 16 volts and at least 14. As for the current strength, the indicator should be no more than 10 amperes.

Reverse charge

How to restore a car battery? To do this, you can use the reverse charge method. It is quite possible to perform the procedure at home, but this will require a sufficiently powerful current source, for example, a welding machine. The device that you will use must have a voltage of at least 20 volts, while its current strength must be at least 80 amperes. After you take out the equipment, it is necessary to unscrew the plugs on top of the battery structure and carry out the reverse charging procedure.

To accomplish this task, you need to connect the positive output of the charging equipment to the negative terminal of the battery. The negative output of the charger is connected to the positive. If everything is done correctly, the procedure will increase the battery life by several years.

Note that during charging, the car battery may boil, do not worry. The procedure for charging the device should be carried out exactly 30 minutes, no more and no less. After that, the electrolyte from the structure must be drained, and the device itself must be washed with hot water. When all the steps are completed, a new electrolyte can be poured into the structure. Upon completion of these steps, the battery will need to be connected to a conventional charger (the current parameter of which should not exceed 15 amperes) and charge the device for the next 24 hours.

Charge recovery in distilled water

If you have not decided how to restore the battery and which method to use for this, we offer another option. Using it, you can restore the device to working capacity in less than 60 minutes. If the car battery is completely discharged, it will need to be charged in advance. It is necessary to completely drain the old electrolyte from a charged battery, after unscrewing the plugs on the lid, after which the structure can be washed with water. As in previous cases, it is better to use distillate for this.

After the battery is charged and washed, a special ammonia-type Trilon B solution should be poured into the structure. The solution includes 2% Trilon and 5% ammonia. With the help of a liquid, a desulfation procedure is carried out, which is carried out for no more than an hour. When the battery is regenerated, you will notice the release of gas from its structure, which is also accompanied by minor splashes that will appear on the surface. These gases are harmless to the body and human health, but it is better to place the battery in a ventilated area. When the system stops emitting gas, this will indicate the termination of the desulfation process.

When the steps are completed, the structure must be washed with distilled water - washing is carried out several times. After washing, the device must be filled with an electrolyte of the appropriate density. The device needs to be charged again and after that it can be considered restored. In general, the procedure for charging and restoring the battery is not difficult, even an inexperienced motorist can handle it.

Not all modern batteries are recyclable. Sometimes the device can be reanimated for a day, several days or a week, and sometimes the restoration allows the battery to work for several years. Much depends on how the battery was used, in what conditions, how many electrical appliances were connected to it throughout the entire period of operation. The conditions of use play an important role - if the device was often used in a discharged state, it is likely that it will not be possible to restore it.

It is necessary to clarify the moment on the use of the charger. The charger must be in good working order, otherwise its use will damage the battery. Our resource has already written about the use of special memory. Detailed recommendations on this issue can be found in.

Hello friends! Today I want to tell you another simple, effective way to extend the life of your old battery. We all know perfectly well that a lead-acid battery is not an eternal thing. And even if you carefully monitor it, sooner or later it will still begin to fail. The reason for this is the sulfation of the plates, as a result of which the battery loses its capacity and is no longer able to perform the specified functions.

I want to clarify that the method described below is only suitable for sulfated batteries. It is not suitable for batteries with closed or swollen cells, broken plates, etc.

Clear signs of plate sulfation

The most obvious sign is that the battery is not holding the load. That is, when measuring the voltage at the terminals, the voltmeter shows a fully charged battery, and when the load is connected, the voltage sags significantly.

The second sign is fast self-discharge. For example, you haven't used your car for day 3. You go to the garage and try to start it. And the battery is very discharged, that even the electronics do not show their values.

All these phenomena do not occur immediately, but come gradually, usually after 3-5 years of battery operation.

The first step is to measure the initial voltage.

I have noticed an increase in self-discharge for a long time, so today it is generally discharged.

It will not be superfluous to check the density of the electrolyte.

After the battery is diagnosed and the diagnosis is made, we proceed to recovery.
With a hydrometer, drain the electrolyte from above as far as possible. As you can see, its color is dark.

Now turn the battery over and drain the rest into a bucket. This must be done very carefully and rotate the body when draining so that the row of cans' holes is horizontal. This must be done so that the outgoing jets of electrolyte do not close to each other.