When operating a car with a good electrical equipment, the problems associated with the battery of this car usually does not occur. Of course, if you do not leave the powerful electricity consumers for a long time with a car non-working engine. But it is necessary to overcome the fuse that protects the generator excitation chain, and the next attempt to start the engine of the car is not crowned with success. After that, before the owner of the car there will be an irrelevant question of: "How to charge the battery correctly?". With accessibility charger Nothing difficult to correct battery pack of the car at home does not represent. Charging the battery of the machine automatic charger is the most simple and in the control over the process does not need.

Accumulator battery The car (AKB) is used to start the engine engine and as an auxiliary source of electricity at a time when the car does not work.

Battery status assessment

The fact that the starter of the car "sluggish" is twist is not necessarily a consequence that the automotive chemical source of electricity is exhausted. Therefore, before dragging the car battery for charging, it is recommended to check it out.

Measurements are carried out when the motor does not work. The fully charged battery of the car has an electrolyte density from 1.27 to 1.29 g / cm 3 and voltage at terminals from 12.3 to 12.9 V. When it remains 70% of the charge, the density of its electrolyte will be from 1.23 to 1.25 g / cm 3, and voltage from 12.0 to 12.1 V. half the discharged current source will have an electrolyte density from 1.16 to 1.18 g / cm 3 and will show the voltage from 11.8 to 12, 0 V. Fully discharged it will have a density from 1.11 to 1.13 g / cm 3, and the voltage will fall below 11 V.

Battery preparation for charging

In order to charge the battery correctly, follow this sequence:

Care methods

Correct battery correctly in three ways:

The first two ways to charge the battery have both their advantages and cons. The first method consists in connecting the battery to the power source with a constant power of current voltage not higher than 16,2 V. Current strength during charge for 20 hours can be calculated if the battery capacity is divided for 20 hours. For example, the battery is installed on the machine with a capacity of 50 A-hours then 50 A-h / 20 h. \u003d 2,5A. At 10 hours of charge to determine the strength of the charge current, the container is divided by 10 hours. That is, to correctly pop up the same battery for 10 hours, you need a charging current of 5 A. One of the most important advantages of this method is a complete battery charge. Of the disadvantages, you can note the need to stabilize the strength of the current, significant separation of gases, and the heating of the electrolyte.

Charging this method is recommended to be carried out in two stages - first make the charging current equal to 1/10 from the nominal capacity, and after reaching the voltage of one can of 2.4 V, reduce it 2 times. The end of the charging is determined by the appearance of intensive gas formation - the "boiling" of the electrolyte.

Alternative

The second way is to stabilize the charging voltage, the current of the current changes depending on the resistance of the battery. This technique allows you to charge a battery to 85-90%. Benefits of the method:

• quick battery briefing in the working condition;
• most of the energy consumed at the initial process is spent on the restoration of the active mass of the plates.

The main disadvantage is a strong heating of electrolyte due to the large current forces at the beginning of the charging. The equalization charging is designed to eliminate the consequences of deep discharges. Very well eliminates the increasing sulfate of the electrodes.

The forced technique is used to quickly restore the operating state of the source after a deep discharge. Adjusts increase current at the beginning of charging up to 70% of the value of the nominal capacity, but not more than half an hour. The next 45 minutes of charging current is reduced to half the nominal capacity. Another 1.5 hours is charged with a current that makes up 30% of the nominal container. This charging requires compulsory control of the electrolyte temperature. If the temperature rises to 45 ° C, the charging should be stopped.

Apply the method of the forced charge of the battery trail as less as possible, as its regular use significantly reduces its service life.

About the capacity of AKB

Among the owners of the car there is an opinion on the inadmissibility of the installation on a battery machine with an increased capacity, since with a greater capacity automotive AKB allegedly will not be charged. However, the amount of energy spent on the start of the engine motor does not depend on the capacity of the AKB. Therefore, with a good generator, it will be replenished in a larger and less capacity in the same time. It means that the installation on a car AKB with a capacity of greater recommended will not cause harm.

Charging device

The charger (memory) serves to charge electrical batteries from the AC network. It consists of a stress converter (transformer or pulse rectifier), a voltage stabilizer, a controller controlling the charging current and sometimes the indication unit consisting of switching or LED ampervoltmeters. There are zoom type of charged batteries, their operating voltage and capacity.

Designation of a car for car batteries: X b / c, where X is the name of the charger, b is the maximum capacity of the chargeable battery in amps-hours, C is the maximum operating voltage of the charged battery in volts. If the memory value B exceeds 170 A-h, then it can be used not only for charging, but also for help when starting the engine of the car.

Car battery provides power supplies machine elements. During its movement, charging is charged using the generator. However, he will not be able to fully fill the energy. Therefore, it is periodically necessary to maintain the AKB. To do this, you should know how to properly charge the car battery charger at home.

Select charger

The determining parameters are the characteristics of the battery (6, 12 or 4 V), the type of battery (filled, dried, gel and child-acid). According to the last quality, it is recommended to choose universal models suitable for all types of batteries. Additionally, the nominal capacity of the capacity - Ah is taken into account.

The functionality of the memory is divided into two classes:

• Chargers. Designed only to restore the performance of the battery, it is possible to maintain the current charge at the required level.
• Start-charging. To start the car systems, a significant charge is required. If the battery for this time did not have time to charge - the commissioning device can replace it at this stage.

For beginners, it is recommended to buy simple models of the charger, without additional parameter adjustment functions. If the car enthusiast has a lot of experience - it will need a professional memory with an indication, the ability to adjust the current and voltage. Any model must have the protection option from overheating, incorrect connection.

How often do you need to charge the battery

Battery charging frequency determines its life. Ideally, he should connect to the memory no more than once a year. But actually it depends on the set external factors. With incorrectly selected periodicity and the absence of control over the current state of the battery, the opposite effect will be observed - a rapid decrease in capacity.

Facts that affect the frequency of charging the battery:

• Temperature overboard. It does not affect if the indicator is more than + 5C. Once there is a decrease - the battery capacity may fall 1.5-2 times.
• Possible malfunctions power plant. These include problems with compressions, incorrect operation of fuel equipment.
• Frequency of full battery load when the motor is turned off.

The minimum charge of the battery to start the power plant is individual. But usually it should not be less than 12.3 volts. If this value is less - the charge will not be enough, you will need to connect to the memory. On average, 70-75% of the maximum charge are enough to normal operation of the battery. Restore it up to 100% is recommended once a year, before the start of the winter period.

Car battery charging methods

There are two main ways to charge AKB - by changing direct current or voltage. The choice depends on the functionality of the memory, the need to control the process, its speed and degree of charging.

Before starting, it is necessary to fulfill such conditions:

• Preliminary check of the actual battery container.
• The correct connection of the terminals along the polarity is "plus" to the "plus", as well as "minus". Otherwise there will be a reverse process - discharge.
• The minimum cross-section of the wire conductors is 1 mm2. In the braid, the diameter should be about 1.3 mm.
• Cleaning the surface of the battery from the residues of acid, dirt.
• Unscrew the tubes of holes intended for the pouring of the acid.
• Check the level of electrolyte. If it is not enough - distilled water is added.

After that, you can proceed to the charging process. It is recommended to do it indoors with room temperature and good ventilation. In the process of increasing the charge, pairs of electrolyte will stand out.

DC adjustment

The essence of this method is to control the current value by regulating it depending on the current battery charge. For novice motorists, it is complicated, since changes in the indicator depend on the actual state of the ABB. It is recommended to apply if it is possible to continuously monitor the process.

The best essence of this method is to consider on the example of the battery, the capacity of which is 60a * h. Recommended procedure.

1. Set the current value in 6A, from the ratio of 0.1 to the nominal capacity.
2. After the start of excretion of electrolyte gases, it is necessary to reduce the indicator twice. When the charge of the battery is 14.4, the current should be 3 A.
3. As soon as the charge indicator reaches 15 V - current decreases to 1.5 A.

In this way, you can charge the battery to a level from 70% to 100%. In the latter case, it is necessary to control the value of the battery level and current strength. If the first remains unchanged for two hours is a sign of complete charge.

Changing a constant voltage

The optimal way, if there is no possibility to constantly monitor the process. It should be borne in mind that the value of the battery charge in this case is proportional to the supply voltage. To pre-calculate the time, the supplied voltage must be divided by 1.11.

Consider this process on the example of standard 12 in the battery, depending on the required degree of charging at a duration of 24 hours:

• 75-80%. In this case, the supplied voltage must be 14.4 V;
• 85-90%. The optimal value is 15 V;
• 100%. Voltage parameter must be at least 16.3 V.

Important - the charging current value should not exceed 25 A. For this, the memory must be equipped with a scheme that limits this parameter. It is in all factory models, if used homemade device - This moment you need to track down.

Checking battery charge level

In addition to the values \u200b\u200bof the parameters on the charger and terminals of the battery, it is recommended to additionally monitor the density of the electrolyte. This is done with the help of a special device - the areaometer.

For a standard battery, the following electrolyte density values \u200b\u200bare taken depending on the degree of charging:

• 100% - 1.28 g / m3;
• 75% - 1.25 g / m3;
• 50% - 1.20 g / m3.

It is important to check this indicator in all banks. If for any reason, a closure occurred in one of them - the value of the electrolyte density will be significantly less than the rest. It is also necessary to take into account the accuracy of the areaometer, the degree of its suitability for calibration, the range of measured values. Additionally, this device can be used to control the condition of the coolant.

Alternative methods

A proven method for restoring the performance of the ACB without using a special device - "Cursting" from another battery. It is important that the values \u200b\u200bof the current force they have equally. Otherwise, fuses or part of the wiring of the car will fail.

You can perform this in the following algorithm.

1. Direct connection to the battery of another car with the observance of polarity, as when using the memory.
2. After starting the engine, you need to wait 3-5 minutes and only after that you can turn off the terminals. First, from the "donor" and then from the battery of your car.
3. Ride for 20-30 minutes. The best charging will be with the activation of elevated or reduced gears. The recommended number of crankshaft revolutions is from 2900 to 3200.

This method will be effective if the battery level is not lower than critical. Otherwise, the start of the engine and onboard systems will be impossible.

It is also not recommended to use homemade gland made on the basis of household charging blocks from a laptop or mobile phone. It is almost impossible to control the main values \u200b\u200bof the current and voltage during the charging process. This may lead to negative consequences. It is best to purchase a cheap, but reliable factory model of the memory.

To date, scientists have not yet come up with an eternal source electrical Energy for auto. Accordingly, any development of the battery requires attention from the motorist. Often, drivers are interested in the question of how to charge the car battery. This problem usually pops up when the current source has long been set to vehicle. In one not very beautiful day the motor fails to run. Then you have to receive a solution to the battery maintenance decision.

Theoretical aspects and problems

Car rechargeable battery is designed to start power aggregate And for the functioning of the electrical on-board network when the generator fails. The larger distribution in the passenger vehicle was found across a lead-acid type with a voltage of 12 V. Life life of such batteries today rose to 5-7 years thanks to new materials and modern manufacturing technologies.

When the car does not start because of the seed battery, there are several options to "revive" the motor.

1. Machine can be started with a tug, turning on the transmission. However, for cars with automatic transmission This method is not suitable.
2. You can run the engine with the help of a cigarette lighter wire if you can find a donor of automotive electricity. In this case, the prerequisite must be approximately the corresponding battery capacity of both machines.
3. The longest way to "revive" the motor will be charging the battery of the car with a special device operating from 220 V.

To recharging the battery gives the desired effect, you must perform a few simple conditions:

• the battery should be checked for the lack of mehphanages;
• battery is better to remove from the car;
• to determine the degree of charging, it is better to stock up the load fork, tester or a steamometer;
• for stripping, the terminals will need sandpaper or file.

Causes of battery discharge

The battery is able to work for a long time without recharging. At the same time, the car enthusiast should know the causes of the loss of the capacity of the battery.

• Long-term parking of the car negatively affects the durability of the battery. Several extend the life of the current source will help the removal of the minus terminal.
• The old battery with a rapid discharge is unlikely to be resumed to reanimate. We will have to choose a new battery.
• The faulty onboard network of the car contributes to the accelerated discharge even when the ignition is turned off.
• Low electrolyte levels in banks leads to constant loss of battery capacity.

Preparatory stage

It is best to remove the battery from the car before charging. This is done in order to prevent unpleasant consequences in the event of splashing electrolyte or battery closure. To remove the battery you follow the following operations.

1. First of all, all devices must be turned off in the car, and the ignition key is better removed from the lock.
2. With the help of a horn or end key, fasteners are released on terminals. First, a negative wire is removed, and then a plus terminal is dismantled.
3. Often the battery is attached to the body with a plank. It can be located both from above and side or down. The mount must be loosen or completely removed.

Now the motorist should find a place where the battery can be charged. The following conditions will be compulsory requirements for the equipment of the workplace:

• ventilated room;
• availability electrical outlet 220 V;
• smooth and solid surface for installation of AKB;
• lack of an open source near the battery;
• ensuring the safety of instruments from children and animals.

Now the battery inspection. At the same time, special attention is paid not only to the integrity of the bank, but also the purity of the conclusions, the presence of traffic jams, determining the capacity of the AKB. To ensure good contact, battery conclusions are cleaned with a sandpaper or file. In the presence of traffic jams, they should be unscrewed to exit the released gases. At the same stage it is required to check the level of electrolyte. With a lack of liquid in the battery, extremely distilled water is added.

Chargers today are the most different species. The main requirements for the device are sufficient power, the presence of an ammeter and adjustment toggle. Newcomers are better to familiarize themselves with the instructions for applying the existing charger.

Battery charging technology

When servicing the battery, the motorist should not be hurry. It is important consistently and accurately follow the next technological chain.

1. The main point of the connections of the charger to the battery will be observance of polarity. It is better once again Check the correctness of the connection than to withdraw the battery.
2. After that, the battery charger is included in the socket and the optimal current is set. It should be 10% of the battery capacity. So, when recharging the battery 50 a / h, the current strength in 5 A.
3. If the recommendation is complied with the installation of current force, then it is easy to calculate how much charge car battery. Excluding electricity losses will require a 10-hour time to completely restore the battery capacity.
4. You can control the battery status in the following ways:
   • with a voltmeter;
   • using a carometer.

The fully restored battery should show the voltage from 12 V to 16 V, and the electrolyte density will fall within the limits of 1.29-1.31 kg / l.

After recharging the battery, turn off the device and then remove the terminals of the memory and install the battery in place.

Basic battery packs

The duration of impeccable operation of the current source has an impact and right choice battery when buying. Here are several parameters for which the motorist needs to pay attention to the store or on the car market.

1. One of important indicators Battery dimensions are. In no case cannot acquire larger batteries. They will not be able to securely secure the body.
2. Accumulator electrodes must accurately coincide with the location of the terminals of the electrical wires.
3. The battery release date also directly affects the duration of the device. Long-term standing battery in stock or in the store without recharging negatively affects the durability of the current source.
4. The capacity of the acquired model must accurately correspond to the passport data of the car.
5. The purchase of the battery is better to do in specialized outlets, where the seller can test the serviceability of the wiring of the car and write down the warranty coupon.

The battery does not require large financial costs of maintenance from the car owner. It is enough to periodically inspect the state of the terminals, clean the resulting flare, check the reliability of the attachment to maintain the performance of the battery for a long time. A regular recharging of the current source (1 time in 3-6 months) stationary zoom will allow the engine to be launched into any weather.

When the summer season ends, you can often hear the question from motorists: how to charge a car battery correctly?

And this question arises, because in the frost there may be certain problems with the start of the engine.

Charging a lead battery is usually made from DC sources.

For this, any rectifiers are suitable with the possibility of regulating outgoing current or voltage.

Modern maintenanceable batteries will not be able to charge 100% if the battery charging device does not provide an ability to increase the outgoing voltage to 16 V.

The device for charging the car battery is equipped with two terminals (+ and -).

To accomplish the terminal, connect to the battery, respectively: plus to the plus, minus to minus.

There are two battery charging methods: with current constancy and voltage constant.

The durability of the battery both methods affect the same.

Principles of charger

Charge with current constancy

This method implies the adjustment of the charging current for the rated capacity of the battery.

The battery capable of issuing 60 A per hour should be charged with a current force in 6 A.

The charger with this method must necessarily be equipped with a regulating current by the device.

The disadvantage of this method include the need to periodically control and regulate the current strength on the charger, as well as abundant gas release at the end of the charge process.

To reduce the volume of gasms and increase the maximum "rambling" of the current in the battery, it is advisable to apply a step lowering of the current strength to an increase in the voltage in the charging process.

For example, the same battery in 60 A.

When the voltage rises to 14.4 V, the current strength should be reduced exactly twice, that is, to adjust to 3 A, in contrast to the initial 6 A.

If the last generation battery is charging, then after this operation, it is necessary to wait to increase the voltage up to 15 V and reduce the current strength by another twice (up to 1.5 A).

It is possible to determine the full charge of the battery by observations when the readings of the current and voltage remains unchanged within 1-2 hours.

Usually for modern batteries, the voltage value at full charge stops by 16.3-16.4 V.

The degree of charges of the AKB with this method at the end of the charge process depends directly from the voltage value, which is provided by the charger.

For example, the battery in 12 V will be charged by 75-85%, if used voltage at 14.4 within 24 hours.

With the same data, but with a charge voltage of 15 V - by 85-90%, and at a voltage of 16.3-16.4 in almost completely.

Chargers must be equipped with schemes that limit the maximum line of the current charge of the current, since when turned on to a devastated battery, the current strength can jump to 40-50 A and even higher (it all depends on the battery capacity).

In the process of charging the car battery, the voltage at the battery outputs is approaching a predetermined voltage of the charger.

In this case, the charging current is reduced and the end of the process is approaching a zero mark.

The advantage of this method is that it can be used without any observations.

It is completely optional to absolute zero.

If the ratio of the accumulated to the distance to the distance approached 14.2 ± 0.3 or 14.4 ± 0.1, then, in fact, you can turn off the charger and remove the terminals.

For consistency in chargers, there is a battery charging indicator that lights up and notifies full charge.

By minus such a method can be attributed to the loss of time.

To fully charge the battery from the charger (14.4-14,5 V), you will need to spend more than 24 hours.

Battery Charging Rules - Step-by-step instructions

It is important to make sure that the battery will be charged in a well-ventilated room and away from all flammable items.

When charging occurs, the battery liquid begins to evaporate and highlight an explosive mixture of oxygen and hydrogen into the air.

2. The battery should be prepared for charging, clearing the terminals from dirt, oxidation or lubrication.

3. To charge the battery qualitatively, it is recommended to fully discharge it to begin.

To do this, it is enough to include car lights With a non-launched engine and leave them for a few hours.

4. It is necessary to check the density of the electrolyte (liquid in the battery).

This will require a special device - aryometer.

At a temperature of +25 ° C, the ideal density will be equal to the indications on the device in 1.25-1.27 g / cm.

Density in banks should not differ according to the indications of more than 0.01 g / cm3.

The liquid must be completely covered with lead plates.

If necessary, the electrolyte can be addressed or diluted with distilled water to achieve the required density of the filler.

5. You need to make sure that the covers removed from all cans, and then connect the charger terminals to the battery terminals.

For this, there is a rule: first always connects to the plus, and then minus to minus and this is when the charger is turned off.

As described above, the current strength should be equal to 1/10 from the battery capacity or below.

If the battery is greatly discharged, the ratio changes to 1/30.

7. Sometimes you need to follow the charging process, especially if this is the current method.

The electrolyte should not heigh over +40 ° C.

If this limit is reached, the number of current supplied by the charger needs to be reduced twice.

8. Checking the battery charging can be calculated using the aryometer readings and an outgoing voltage charger.

If the testimony remains unchanged for 2 hours - the battery is customary to be charged.

Why in winter the battery is discharged faster?

The operation of the battery on the road implies its recharging from the DC generator.

When the air temperature decreases, the internal resistance of the battery begins to grow.

This leads to a deterioration in the battery charge efficiency.

Restore the capacity of a fully discharged battery under reduced temperature with automobile generator Often, it is possible to approximately 70%.

This is when the engine is permanently turned on and the lighting devices turned off.

Cold Winter conditions suggest a frequent long-lasting start of the engine, moving to short distances and for a long time, the included lighting, which is not very economically affected by the battery charge.

Good to know

The battery life is determined by the number of recharging cycles (must be specified in the documentation).

This number is usually from 800 to 1000.

This number includes recharging from the automotive generator.

Therefore, in fact, each trip can be timed to circulates to the number of charge cycles (it all depends on the duration and conditions of the trip).

The use of electrical appliances and electrical engineering of the car when the engine is turned off quickly plant the battery.

In the summer, the battery liquid drops faster than in winter, so the periodic check of the electrolyte level will become an explanatory habit.

Proper car battery charging with charger

Any motorist sooner or later faces the problem of charging the battery. From this not leave and you need to learn to charge the battery, if you still do not know how. Otherwise, the situation will come when you have a car with a dead battery, and you will not even know from what a side to come to him. On the Internet you can find many questions regarding the charging process. Does the battery remove from the car or not? What do you need to charge? How to charge? Here we will try to answer our today's material.

To charge the car battery you will need a charger (memory). This device is also called the rectifier, since the memory is transformed into a permanent. If you still do not have a memory, then read about. And here we will only briefly tell about choosing a charger for your battery.

When choosing a memory for a car battery, you must consider the following points:

• modes for different types of battery. The most common wet batteries with a liquid electrolyte. There is still AGM, GEL. In the case of the last two you need a special memory or universal with the mode for these batteries. All devices are suitable for WET;
• output voltage. This parameter must be selected depending on the rated voltage of your battery. Some device models allow you to charge batteries with different voltages (6/12 / 24V). For distributed car batteries 12V The output voltage should be at least 16 volts. This will be enough to complete the battery;
• charging current. This value is selected depending on the rated capacity of the battery. It must be at least 0.1 from the rated capacity. It is better if there is a small stock so that the charger does not work at the limit of its capabilities.

As a rule, the charger is the diagram itself in the housing, the plug for connecting to the network 220V and the wires with crocodiles to connect to the battery.

Suppose you have purchased. Now about how to charge the car battery by the charger. But first a few words on safety.

Security measures when charging the battery

Charging procedure should not be carried out in the apartment, especially if you have little children. The battery needs to be charged in a ventilated room. If there is no such possibility, do it on the balcony. The main danger lies in the release of hydrogen when charging the battery. Together with oxygen, it forms an explosive mixture. Therefore, there should be good ventilation in the room so that hydrogen is not accumulated.

Remember that near the battery standing on the charge, you can not wait for something, smoke, cut the metal with the formation of sparks, etc.

In addition, it is important to remember that the electrolyte is an aqueous solution of sulfuric acid. This caustic substance is dangerous to human health. When working with electrolyte, gloves and safety glasses should be applied so that it does not hit the skin or in the eye. Ideally, you need to hold a 10% food soda solution to neutralize the acid.

How to charge the battery

To start the answer to the question, is it necessary to remove the battery from the car when charging? In principle, it is optional. You can turn off the terminals and charge it right by car. But to properly charge the car battery better to remove it. All work will be significantly more convenient and do not have to pull the wires to the car to include the charger in the network.

Attention! Should not be charged in a room with high humidity. The battery and the charger must be dry.

In the simplest case, charging the battery will look like this. Twisting cork on battery banks, cover the holes so that the electrolyte does not occur. Connect the crocodiles to the outputs of the battery with the observance of polarity (red on plus, black for minus). Include a charger on the machine and leave so night. For standard batteries with a capacity of 55─60 Ah Charging 8─10 hours will continue. In the "Automatic" mode, the device itself will deactivate the charging when the battery reaches the required parameters.

At the end of charging, tighten the plugs and wipe the surface of the battery with a solution of food soda in water to neutralize acid and dirt residues. This will reduce the battery self-discharge.
Now, when how to properly charge the car battery in general, let's talk about various charging modes.

There are two charging modes of the battery:

• constant current;
• with constant voltage.

Charging battery constant

How to charge the car battery with a charger using a constant current? The idea here is that charging is divided into several stages. Each of them supports a certain value of the current. The value of the current force must be constantly monitored and adjusted if necessary. Here you will need a multimeter to control the voltage at the battery outputs.

The process of charging the DC is divided into several stages:

• first stage. First we set the current equal to 0.1 from the rated capacity of the battery. For a battery 55 A-h, this will be 5.5 amps. In this mode, we charge to the voltage at the conclusions of the battery 14.4 volts;
• second phase. At a voltage of 14.4 volts in the battery, the water electrolysis process sharply activates and hydrogen isolation begins. Therefore, we reduce the charge current twice (up to 2.5 amps) to reduce the boiling intensity and continue charging;
• third stage. When the voltage is reached at 15 volts, the charge current is reduced twice (up to 1.2 amps) and continue to charge. Take the voltage and current every two hours. If their values \u200b\u200bdo not change, the battery is fully charged.

The advantages of this method include the fact that the battery receives a full charge and restores its capacity for almost 100 percent. The disadvantage is that the process must be constantly monitored.

Charging a battery with constant voltage

The idea of \u200b\u200bthis method is that the voltage at the outputs of the battery will strive to align with the voltage at the outputs of the charger. The degree of charging of the battery will depend on the value of the supplied voltage. The battery will be fully charged when the current is dropped to 200 mA, and the charging process will be stopped. This process does not require control by human. In this mode, there are almost all chargers in automatic charging mode.

As for the charging time of the battery at constant voltage, the values \u200b\u200bhere are approximately following:

• Voltage 14.4 volts. After a day, the battery charge (rating of 12 volts) will be about 80 percent;
• Voltage 15 volts. For the same 24 hours, the charge will be about 90 percent;
• 16 volts voltage. During the same time, the battery will be charged almost 100 percent.

Accelerated charging AKB

Accelerated battery charging is performed in cases where the battery needs to return a part of the tank very quickly. For example, you need to go to work, and the battery sat down. Then the accelerated charging is useful.

Now many chargers have boost charging mode. In this mode, an enlarged current is immediately given and in 20 minutes the battery is gaining a container sufficient to start the engine. In principle, it is not necessary to have a Boost regime in the memory. The main thing is to have the ability to adjust the current. Then you can manually set the desired value.
Remember that it is impossible to put more than 30 percent of the standard charging current. If in normal mode you charge the battery for 6 amps, then in the accelerated mode, do not put more than 8 amps. It causes fast wear Plates and reducing the service life of the battery.

Use the accelerated charging mode only in emergency casesWhen it is really necessary. If there is no such need, then charge the battery in normal mode. If you constantly charge the battery in Boost mode, it very soon exhausted its resource.

Effective Battery Charge and Electrolyte Density

Basically, the end of the charging of the battery, we determine the testimony of the memory or voltage at the conclusions of the AKB. But on them it will not be possible to determine the exact degree of charging the battery. To find out how the battery is charged, you need to measure the electrolyte density. To do this, there is such a device as a carometer. It is inexpensive and for sale in any car store. We advise you to have it in the farm.

Measure the density of the electrolyte should be in all banks. Read more about the measurement of density and in general about the electrolyte, read in the article "". In a fully charged battery, the electrolyte has a density of 1.28─1.3 gr. / Cm 3. In a fully discharged battery, the density value is about 1.1 gr. / Cm 3.

Below you can see the Table of Electrolyte density dependence on the degree of charging AKB:

			Account degree,%
Electrolyte density, g / cm. cube (+15 gr. Celsius)	Voltage, in (in the absence of load)	Voltage, in (with a load of 100 a)	Account degree,%	Frozening temperature of electrolyte, gr. Celsius
1,11	11,7	8,4	0	-7
1,12	11,76	8,54	6	-8
1,13	11,82	8,68	12,56	-9
1,14	11,88	8,84	19	-11
1,15	11,94	9	25	-13
1,16	12	9,14	31	-14
1,17	12,06	9,3	37,5	-16
1,18	12,12	9,46	44	-18
1,19	12,18	9,6	50	-24
1,2	12,24	9,74	56	-27
1,21	12,3	9,9	62,5	-32
1,22	12,36	10,06	69	-37
1,23	12,42	10,2	75	-42
1,24	12,48	10,34	81	-46
1,25	12,54	10,5	87,5	-50
1,26	12,6	10,66	94	-55
1,27	12,66	10,8	100	-60

For these values, after measuring the density, you can find out to know how much the battery is charged.

In general, everything I wanted to say how to properly charge the car battery. It remains only to recall the safety of safety. Before you independently charge the battery, it makes sense to ask for advice from more experienced motorists. Charger and the area meter should have their own. It is not so expensive and they will always be useful during the operation of the car.

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