Can a car battery be repaired? We “revive” a dead battery: effective methods

Modern rechargeable batteries remain one of the biggest challenges for manufacturers and consumers alike. And the point here is not so much the potential risk of fire, but the gradual depletion of the power source itself. Therefore, one should not be surprised that with everyday charging, batteries can withstand a year or two of active use, after which their capacity drops catastrophically and it becomes problematic to use your favorite gadget. It is impossible to completely reanimate a dead battery, but you can extend the period of active use while you are busy looking for a replacement. This is what we will talk about today.

The recommendations below are designed for a technically trained user, therefore, if you do not know which side to approach the soldering iron from, it is better to either contact the services of a service center or go straight to the store for a new battery.

Method number 1

It can help in cases where, due to prolonged operation, gases begin to accumulate inside, as a result of which the battery swells and does not hold a charge well.

Necessary tools and materials: soldering iron, some epoxy, thin needle, flat heavy object for leveling.

As carefully as possible, we disconnect the battery case from the upper block with the sensor.

Separate the electronic sensor.

Under it there should be a cap, inside of which the control electronics are hidden. We carefully pierce it, for which a thin needle is well suited. Remember that with a damaged filling it will be impossible to reanimate the battery.

The most important moment. We put the battery on the table and press it with a press. Keep in mind: too much force can make the battery unusable, and its lack, on the contrary, will not lead to the desired result. It is also strictly not recommended to use a vise or similar devices for the purpose of repair.

When you're done, put some epoxy on the hole and solder the sensor.

Method number 2

He is not able to reanimate a battery with a significantly reduced resource, but it can slightly extend its life. You should not count on much, but a reanimated battery can provide power to a modern smartphone while you are looking for a replacement.

Necessary tools and materials: any power supply (5–12 V, current not less than 0.1 A), voltmeter or tester for voltage control, resistor (power not less than 500 mW, resistance from 330 to 1000 Ohm).

If you do not have a spare power supply, almost any complete one from active network equipment (switches, routers, modems) will do. First you need to make sure that the parameters of the current issued by them correspond to the required ones.

We release the contacts of the power supply and connect them to the dead battery: the “minus” of the PSU with the “minus” of the battery, and add a resistor to the “positive” line. Be sure to check the correct polarity of the connection with a multimeter.

When everything is done, connect the power supply to the network. The procedure time is no more than 2-3 minutes. If possible, control the process with a tester: the maximum allowable voltage is no more than 3.3 V.

A few important notes

Do not leave a problem battery unattended during repairs. Incidents of spontaneous combustion are not a theory, but a harsh reality.

Periodically check the temperature of the “client” with an external thermocouple, an electronic thermometer, or simply with your hand. If the surface feels hot to you, and not just warm, stop the repair immediately.

Do not use excessive charging currents. The maximum that you can afford is 50 mAh. This parameter is calculated as follows: divide the PSU supply voltage by the resistor capacitance. For example, if the first parameter is 12 V, and the second is 500 ohms, then the charging current will be 24 mAh.

Instead of a resistor, you can use a standard 80mm computer fan.

In order to avoid spontaneous combustion, it is also recommended to control the initial charge of the recovered battery.

Method number 3

The technique is controversial and doubtful, but, according to reviews on specialized forums, it helps some users, because the responsibility for possible negative consequences lies with you.

Necessary tools and materials: a working refrigerator.

Remove the battery that does not show signs of life from the smartphone and put a plastic bag, which should be put in the freezer for 20-30 minutes.

Remove it from the device, let it warm up to room temperature, and then charge in the usual way.

Method number 4

Harmless, but ineffective method of resuscitation. But if it seems to you that the battery in your smartphone is completely out of order, then why not try it?

Required tools and materials: smartphone with a standard charger.

Bring the battery to a full discharge (when the phone no longer turns on). Any resource-intensive game or AnTuTu utility can help with this.

Fully charge the battery to the 100% mark.

Repeat steps 1 and 2 several times.

Method number 5

Almost all professional electricians will consider the following procedure sacrilegious, but it has helped many users of old batteries.

Necessary tools and materials: razor blade, thin screwdriver, glue "moment".

We remove the battery from the phone.

Peel off the sticker with technical specifications.

We cut off the top plastic cover as much as possible, behind which the control electronics is hidden.

We find the main contacts.

For a moment we close them with any metal object.

Glue the top cover and let it dry.

Once again, we remind you that none of the above methods of resuscitation guarantees a 100% result, and all responsibility falls entirely on your shoulders. But if the battery is completely dead, and the purchase of a new one is postponed for several days, it's worth a try. But if you rarely pick up a soldering iron and consider yourself a humanitarian, it is better to seek help from a friend who understands the topic.

Video instruction

It never hurts to understand what exactly happened to her and whether it can be restored. It often turns out that the battery can be brought back to life in one way or another, and it can work for a long time. Of course, it is always important to remember that battery refurbishment is a process that requires specific skills and certain safety precautions. But if you learn this yourself, you can significantly reduce your cash costs. To understand how it is carried out, you need to understand how they function.

Device and principle of operation

The contents of car batteries are placed in a durable plastic case. Inside it there are two lead plates with charges with plus and minus signs, as well as a liquid electrolyte in the form of . Not only lead can serve as a material for the manufacture of plates. For example, in many modern batteries they are made of nickel or cadmium alloys.

When a certain amount of current is applied to the battery, it begins to accumulate energy and convert it into electrical energy. When the capacity limit is reached, the battery becomes an energy storage device with an output voltage of 12 V.

Why does the battery stop working

With each charge-discharge cycle, the battery plates are gradually damaged due to intense electrochemical processes inside car batteries. In addition, the car battery does not like deep discharge and constant use at high voltage. In both cases, a process called sulfation occurs. In other words, sparingly soluble lead sulfate is formed on the plates (if they are lead), which, in the end, becomes the main cause of battery failure. If the battery plates are intact, you can see a white coating on them. In this case, is shown.

When recovery is not possible

If the electrolyte inside turned out to be black or brown-brown, most likely, battery recovery is no longer possible. If the battery is swollen and swollen, it should be disposed of immediately.

The plates may crumble or crumble altogether, as a result of which one or more "cans" may short out in the battery. After a short circuit, restoring a car battery is also not recommended. Therefore, you should always look at what happened inside the battery before you restore it - of course, observing possible safety precautions.

In order not to bring the power supply to such a state, observe.

Car battery recovery

Despite the fact that there are no step-by-step guides for restoring batteries, many car enthusiasts have been doing their own restoration for a long time.

In popular publications and even on the street, advertisements still often flash that someone is buying up old acid batteries. Usually, such buyers themselves “reanimate” old batteries, and then sell them at reasonable prices.

There are many ways to repair a car battery yourself. One of the most reliable and popular - with the help of a special additive. Before starting the process, the old electrolyte from the battery is drained, and the inside is thoroughly washed with distilled water. At the same time, along the way, the condition of the battery is also assessed: how the plates look, how well the plastic case is preserved, and so on.

In an electrolyte having a density of 1.28 g/cm 3 , the desulfating additive is dissolved, and the solution is left in this state for two days. All necessary proportions are indicated in the instructions for use of the additive. The electrolyte is poured into the battery with a mandatory check of its density. The plugs of the "cans" of the battery are unscrewed, and the charger is turned on. Several cycles of "charge-discharge" of the battery are carried out to raise the level of its capacity. The entire charging process is carried out with a current of 10% of the maximum.

The battery should not get very hot, it should not be allowed to “boil”. Monitor the voltage indicator: when it stabilizes from 13.8 to 14.4 V, reduce the current supply to 5%. Wait about two hours, monitor the density in the electrolyte. If during this time it remains unchanged, the battery is charged and you can stop the charging process.

If the density of the electrolyte is higher than required, it must be corrected with distilled water, and if, on the contrary, it is higher, add an electrolyte of a higher density to the battery.

Now you need to discharge the battery again by connecting the load in the form of a small light bulb. Apply a small current, 1 A for a 12-volt battery, or 0.5 A for a 6-volt battery. Monitor the voltage until it drops: 10.2 V for a 12 V battery, or 5.1 V for a 6 V battery. Record the time and calculate the capacity acquired by the battery after recovery. For this, the discharge current is multiplied by its time. If the capacity is small, the cycle repeats.

Finally, add a small amount of desulfating additive to the battery and screw the plugs back on. As practice shows, such a battery will work for several more years.

Recovery by polarity reversal

A bit from the course of chemistry and the quality of battery plates

Before carrying out the restoration of lead batteries using polarity reversal, you must once again remind yourself that the two lead plates inside it contain different charges: one consisting directly of lead, “negative”, and the other, from lead dioxide, “positive”. Usually, it is the dioxide plate that is subject to the most severe desulfation process. This is clearly seen in the examples of some Chinese-made batteries, which may be of poor quality.

When it comes to such a recovery method as battery polarity reversal, experienced motorists unanimously argue that the quality of any old Soviet-made battery is distinguished by the enviable strength of lead plates, and therefore even the most “terry” specimen can theoretically be restored in this way. In practice, there have been cases when a battery that has stood somewhere in a garage for 20 years or more lends itself well to the recovery process. They say that in such cases it was possible to return the capacity by 70%.

Polarity reversal process: change the polarity

The battery is discharged to zero voltage indicators, which is controlled by measurements with a voltmeter at its poles. To make the discharge faster, a load in the form of a small light bulb is connected to the battery. Usually, if the battery capacity is low, then it is discharged quickly, and the light bulb stops burning. Then the polarity of the battery changes: the positive plates become negative, and the negative ones become positive. Charge the battery already with this polarity reversal.

Reversed battery: charge correctly

It is very important to remember that the current indicator when charging a reversed battery should not exceed 2 A. If the current is higher, the already weakened plates, especially the positive ones made of lead dioxide, can be completely destroyed. A reversed battery will start to heat up very strongly and quickly. The maximum temperature of its heating is 50 ° C, while 60 ° C is already the upper, critical mark. Voltage - 14.2-14.4 V.

If the heating temperature becomes higher than 60 ° C, you should immediately reduce the current to 1.5A as follows: reduce the voltage to 14.2 or even 14 V, but not lower than 13.8 V. Then charge the battery at such indicators. It should be charged, as usual, up to 12.7 V. If a battery of unknown, doubtful production is reversed, it is better to immediately reduce the current to 1.5 A, because 2 A is a rather large voltage.

Of course, during the charging process after a polarity reversal, the voltage will increase, and the battery banks will heat up. When the banks begin to "boil" and the voltage reaches 14 V and above, the battery must be removed from charging and checked. As a rule, all sulfates are dissolved during such intense boiling processes, and a reversed battery restores its capacity to about 80%.

Double polarity reversal method: the battery should be discharged again with a light bulb and the terminals should be moved to their original places. Then again discharge the battery "to zero" and charge again. After such a polarity reversal, the battery can fully work for 2-3 years.

Recovery of batteries that are not subject to maintenance

Thus, each of the proposed methods for restoring car batteries requires certain efforts, care and caution, but if these methods are mastered and put into practice, you can get rid of the need for additional financial costs for some time.

The start of automobile engines and other power plants is carried out by a starter, which is a special electric motor. To create a starting torque, it needs electricity received from an external source - a battery. However, over time, during operation, the battery may experience various malfunctions, and then the owners have a question of how to restore the battery. This problem is solved in various ways, depending on the design and technical condition of the battery, using special equipment and tools.

Acid battery device

The main function of the battery is to briefly supply powerful power to the starter, which ensures the start of various power plants. For a short time, the battery supplies electricity to all on-board devices until the engine is started, after which the power to them begins to be generated by the generator. Two types of devices are produced for cars - acid and alkaline batteries. Recovery activities most often relate to the first option, which will be discussed in more detail as an example.

All batteries have a fairly reliable design, but despite this, damage and malfunctions still occur due to improper maintenance or inaccurate operation. If the acid battery is old, then there is no point in repairing it. As a rule, restoration measures are carried out in relation to relatively new batteries. To do this, you need to have a good understanding of the design of these devices.

Any battery is placed in a closed plastic case, from which two plus and minus terminals come out. The design assumes the possibility of servicing the battery or the model is maintenance-free. In the first case, there are holes in the upper part of the body that are closed with plugs. In the second case, these structural elements are absent, with the exception of one small hole through which gases are discharged. Such devices have improved characteristics.

The internal space of the case is divided into 6 parts, called sections or banks. They are filled with working elements - lead plates with a positive or negative value, on which the active substance is applied. The battery plates are arranged alternately so that the plus alternates with the minus. Between them there is a separator, which excludes the possibility of accidental contact. The plates are connected into common blocks, each of which has an output jumper connected to the bridge. Thus, all elements are connected into a single bridge and output to the terminals.

The principle of operation of the battery

The formation and transfer of electricity in the battery is carried out by chemical reactions. For this purpose, an electrolyte is poured into each jar, which is a solution in which acid and distilled water are mixed in strictly defined doses.

The battery cannot generate electricity on its own, it only receives it from extraneous sources and stores it for a certain time. During charging, electricity is supplied to the terminals, after which it is converted into chemical energy. Discharging, the battery enters the reverse process, when chemical energy is converted into electrical current.

When a load is connected to the battery, a reaction begins between the spongy lead on the negative plates, the lead dioxide on the positive plate, and the electrolyte. As a result, electricity is released, which is then used for its intended purpose. At the same time, the negative plates are covered with a layer of lead sulfate. During battery charging, the whole process occurs in reverse order, after which the sulfate is dissolved in the electrolyte, and the positive plates are covered with a layer of lead dioxide.

Basic battery problems

The positive and negative plates of the battery are placed in a closed plastic container, inside which an electrolyte is poured, which is a solution of hydrochloric acid. Together with lead plates, it forms the so-called galvanic couple. The terminals receive current from the generator or charger. When it accumulates in sufficient quantities, the battery itself turns into a source of electricity.

Losses of electricity spent on start-up and other needs are replenished using a generator. However, after a certain time, the accumulated reserves become insufficient for normal operation. During operation, aging of the plates occurs. In some cases, the battery can be reanimated. But for this, you must first accurately determine the cause of the non-working state of the battery in order to restore the car's battery at home.

Most often, the battery fails due to sulfation of lead electrodes. In the case of deep discharge, the crystals do not have time to dissolve. In addition, sulfation occurs due to regular undercharging and prolonged storage of the battery in a state of complete discharge. It is easily determined visually, just unscrew the plugs and look at the plates, covered with a light brown coating.

In other cases, in the presence of sulfation, the battery begins to boil quickly when charged, when fully charged, it does not rotate the starter motor and sits down within a few minutes even under the slightest load. The case is covered with a white coating and it is already problematic to return to its original state.

Another well-known cause of battery failure is the destruction of the plates and their further shedding. The main external sign is the black color of the electrolyte. In the event of the destruction of many gratings, the repair of such a battery becomes impossible and it can no longer be restored.

Battery failure is often associated with the short circuit of the plates located nearby. They deform or crumble, and sediment forms on the bottom of the case, causing the closure of one of the sections. In this case, the electrolyte in this bank does not boil during charging, or boiling occurs very slowly. The voltage does not rise at all or rises very weakly. In this case, it is not known whether the device can be returned to its initial state.

Sometimes the battery fails due to freezing of the electrolyte. This happens when the battery is in the cold in a state of severe discharge. If the hull is torn apart by ice, then the plates most likely also deformed and closed. With a whole case, the battery should be thawed in a warm place and then try to solve the problem of how to restore the battery.

Before starting repairs, the housing must be cleaned. Dirt is removed from its surface, after which it is washed with a soda solution in order to neutralize the electrolyte. The terminals are cleaned of plaque with medium sandpaper. Sometimes, after cleaning the terminals, the battery immediately partially restores its performance.

Desulfation by CTC

As a result of sulfation, lead sulphate is deposited on the surfaces of the plates, which prevents the penetration of the electrolyte into the depth of the active mass. For this reason, some part of the mass no longer takes part in the chemical reaction. Therefore, an increase in internal resistance is observed in the battery, due to which the capacity drops. The battery cannot be fully charged and loses its charge very quickly.

One of the main methods for solving the problem of how to restore a car battery is considered to be a control and training cycle, with the help of which sulfation can be eliminated at an early stage, and the battery capacity is restored. The essence of the method is charging and discharging, which are performed in a single cycle. It is necessary to prepare in advance the charger, voltmeter, hydrometer, consumer as a load and you can restore performance.

First, the battery is fully charged. For this, a current strength of 10% of the nominal battery capacity is used. That is, a 60 amp-hour battery will require a current of 6 amps. At the end of charging, the density of the electrolyte is checked in all banks, which should normally be 1.27. If the indicator is less than the nominal value, it is necessary to raise the density to the desired level and charge the battery for another half an hour to mix the electrolyte.

Next, a control discharge is performed using a load connected to the terminals. In this case, the consumed electricity is no more than 10% of the battery capacity. During the discharge process, periodic voltage measurements are performed, which should decrease at the terminals to 10.2V. This indicator corresponds to the full discharge of the device. At the same time, you need to monitor the discharge time. A new battery takes about 10 hours to do this. A shorter discharge time corresponds to a greater loss of battery capacity. Thus, the problem of how to restore the car battery is solved.

The battery must not be left discharged for too long. After a complete discharge, it should be immediately put on charge until the charge is fully restored. As a result of this operation, the capacity is restored, and the internal resistance of the battery decreases after a decrease in sulfation.

Electrolyte replacement

Sometimes the electrolyte contained in the jars becomes cloudy and turns black. In this case, it needs to be replaced. This condition is typical for short circuits or old batteries that have not been used for a long time. One of the ways to restore a car battery is to replace the electrolyte.

The spoiled liquid must be drained by pulling it out with a rubber bulb. It is recommended to pump out the electrolyte not only from the spoiled, but also from all other cans.

Distilled water is poured into empty cans, after which the battery case needs to be shaken a little and drained. The battery must not be turned over, otherwise sediment particles may get stuck between the plates. The procedure is repeated several times until the drained water is clean.

• An electrolyte with a density of 1.28 is poured and settled for a day until all the air comes out from the inside.
• Charging with a current of 0.1 A until the density is fully restored. The electrolyte should not boil much, and the case should not get very hot. If necessary, charging is interrupted to allow the liquid to cool. The battery should charge up to 14-15 volts.
• After checking the hydrometer readings, the current decreases and remains for another 2 hours. If the density during this time has remained at the same level, charging can be stopped.

Using a current of 0.5 amperes, the old battery is discharged to 10 volts. When the voltage reaches this mark in less than 8 hours, the entire previous cycle should be repeated. If everything is normal, the battery is charged to its nominal value.

Improper operation or wear of the plates in the battery bank causes them to close. Let us consider in detail the measures to be performed at the moment when the battery bank is shorted.

Causes, consequences of bank closure

Bank shorting is a common battery damage. Traditionally, if a battery bank is shorted, in 85% of cases the battery is handed over to buyers or disposed of.

Modern batteries have six sections (cans) with lead plates laid in series with a positive and negative dielectric. The design is placed in a composition of distilled water with acid - an electrolyte. Banks are connected in series, give out a certain voltage. A fully charged drive produces a voltage of up to 13 V, a discharged one - up to 10 V.

The reason for the closure can be:

Loss of a lead piece from the plate, which bridges the negative with the lead plate;

Settling of lead sediment (with a large accumulation on the bottom of the plate, touching the sediment, they close).

As a result, the device cannot fully charge, there is not enough energy to turn the starter.

Repair of a closed battery bank

To restore the unit, you must first identify which battery bank is shorted. There are 2 methods: technical and philistine. The first method involves measuring the voltage of each bank using a modern tester - a multimeter. This technology is relevant for Soviet batteries, since the jumpers of the cans in the products were on top.

Modern units are filled with plastic, so the second option involves measuring the voltage of the entire device. If, after a full charge, the voltage varies in the range of 10-11, the bank is closed. To determine a damaged can, it is enough to find a section that does not emit gas bubbles.

The philistine way is simple: the color of the electrolyte inside the sections determines their condition. So, if the composition is saturated-dark or black, then the department is inoperative.

The subsequent set of manipulations includes:

1) unscrewing the section cover;

2) electrolyte drain and non-working cans;

3) cutting plastic from above around the section;

4) disconnection of the jumper from neighboring departments;

5) removing the package of plates, washing them with water;

6) determination of the location of the circuit:

Examination of each plate, dielectric to identify a bridge particle;

flushing the compartment to eliminate the accumulated lead sediment;

7) immersion of the plate pack into the section;

8) soldering jumpers to neighboring departments;

9) electrolyte filling;

10) screwing the cover;

11) soldering of the cut places of plastic with the help of epoxy resins, adhesives.

At the end of the procedure, you need to charge the device. In more than 85% of cases, the voltage level rises to the required level. The battery is ready for intensive use.

The cause of a car battery malfunction is most often sulfation and destruction of the plates as a result of deep discharge, prolonged overcharging, or crystallization of the electrolyte at sub-zero temperatures. In the warranty card and the car's operating manual, most likely, in such a case you will only find recommendations for replacing the battery with a new one. However, you can try to revive the power supply with proven methods.

Raise capacity and density

The main method that is used in various modifications to restore the battery is a multiple charge with a low current (usually such a recommendation can be found in the technical literature). Due to the sulfation of lead plates (their surface is covered with a coating that prevents the battery from working properly), the battery capacity is significantly reduced. Charging is fast, but discharging is just as fast. In a short time, the battery stops receiving current from the charger, and a pause is made, after which the cycle is repeated.

The strength of the charging current should be small - 4-6% of the rated capacity. For example, if you have a capacity of 60 Ah, then the permitted current will be no more than 3.6 A. As a rule, the time of one charging cycle is 6-8 hours, the break is from 8 to 16 hours. The total number of charge-break cycles is 5-6. The termination of restoration work is relevant if the density of the electrolyte has become normal for a given battery, and the voltage value of each of the sections varies between 2.5-2.7 Volts.

Video tutorial on how to bring an old battery back to life

How to repair a car battery at home

A method that is more suitable for motorists who are not able to wait a long time for the result is to dissolve sulfates by washing with a special composition:

1. Charge the battery to its full capacity.
2. Drain the electrolyte.
3. Rinse the inside of the jars with distilled water 2-3 times.
4. Pour in Trilon B ammonia solution (2% Trilon B + 5% ammonia).
5. Leave the battery in this state for an hour (the end of the reaction will be indicated by the cessation of active gas evolution).
6. Repeat desulfation in case of insufficient cleaning of the plates from plaque.
7. Rinse the battery with distilled water 2-3 times.
8. Fill in the electrolyte of the required density.
9. Recharge the battery in the standard way.

A simpler flushing option is as follows:

1. Drain the electrolyte.
2. Rinse the inside of the battery several times with hot water.
3. Rinse the plates two or three times with an exposure of 20 minutes with a cleaning solution of boiling water and 3 teaspoons of technical (you can use food) soda.
4. Rinse the insides again a couple of times with hot water.
5. Fill in fresh electrolyte and charge the battery for a day.
6. After the battery is discharged while driving, charge it daily for 6 hours for the next 10 days. Approximate charge time - 6 hours at voltage

14-16 Volts and charging current not more than 10 Amps.

Is it possible to reanimate a maintenance-free acid battery

A reliable way to resuscitate a maintenance-free car battery is quite simple, but requires patience. First you need to pour out all the electrolyte, replacing it with ordinary distilled water. The terminals are connected in the usual manner to the charger, which is set to a constant voltage of 14 volts. After a couple of hours, you need to listen to the processes taking place inside. There must be gas release. If it is intense, then you need to slightly reduce the voltage of the charging current. Thus, it is necessary to achieve moderate, but stable gas formation.

In this state, in two weeks, the battery will turn water into a weak electrolyte as a result of its reaction with lead sulfate on the surface of the plates, which will gradually be converted into sulfuric acid molecules. After the specified time, the contents of the jars are again replaced by water, from which a new electrolyte should be obtained within 1-2 weeks under the influence of an already tested current. At the end of desulfation, the electrolyte of low density must be replaced with a normal electrolyte. The final touch of recovery will be recharging in accordance with the standard parameters for this battery.

Troubleshooting a short circuit

It happens that the problem of low battery was the result of a short circuit in one of the cans. In this case, the electrolyte charge in the problem section becomes impossible. The only way out is to eliminate the circuit zone by burning it with a high current. It is enough to connect the terminals, for example, to a welding machine with a rectifier diode at the output, in order to give a current of 100 or more amperes to the plates. It will only take a couple of seconds to close the circuit. This is enough to eliminate the place of contact of the plates as a result of its critical overheating.

Reverse charge

The welding machine can also help with battery recovery by reverse charging. The polarity should be taken in this case exactly the opposite: the “plus” of the power source is connected to the “minus” of the battery, the “minus” to the positive terminal. The voltage should be 20 volts, the charging current should be 80 amperes or more. When the plugs of all cans are turned out, current is supplied. The battery should actively boil for half an hour, after which the electrolyte should be drained. After washing the battery with hot water, you can fill in a normal electrolyte and charge the battery for a day. But there is an important nuance: the terminals have now changed polarity, so the “plus” of the charger is installed on the “minus” of the battery, and the “minus” goes to the former “plus”.

If the above methods do not help solve the problem or there is no way to wait, you will have to buy a new battery.

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Each car owner seeks to protect himself from emergencies related to road accidents or other damage to his vehicle. One of the options is the conclusion of a CASCO agreement. However, in an environment where there are dozens of companies providing insurance services in the insurance market, ...

HOW to choose the color of the car, choose the color of the car.

How to choose the color of the car It's no secret that the color of the car primarily affects road safety. Moreover, its practicality also depends on the color of the car. Cars are produced in all colors of the rainbow and dozens of its shades, but how to choose "your" color? ...