How to properly remove the battery from a car

Removing the battery from a car is a task that every car owner faces. This may be required to replace the battery itself, service it, or temporarily store it, for example, in a warm room in winter.

Quickly removing and then installing the battery is quite within the capabilities of an ordinary car enthusiast and, as a rule, no special skills are required for this. You just need to know a few rules and follow a certain procedure.

What can result from an incorrect shutdown procedure?

Errors and negligence when removing the battery can lead to both failure of the battery itself and damage to the vehicle electronics. If a damaged battery can be replaced with a new one without great expense, then damage to the on-board computer as a result of a short circuit can be extremely expensive.

How to properly remove the battery from a car

To properly remove the battery, you must strictly follow a certain procedure.

Preparing for work

To begin with, if you don’t already know, find out exactly where the battery is located in your car. In a modern car, the battery can be located in various (sometimes unexpected) places: in a niche in the trunk floor, under the rear seat, under the front seat, in the floor under the passenger’s feet.

If, when you open the hood, you don’t find a battery there, then look in the trunk and lift the floor panel - if it’s not there, then Google will help you, as they say.

Next, if the battery is covered with a cover, remove it. Use a brush (not a metal one!) to remove accumulated dust and dirt. Find out what bolts are used to tighten the battery terminals and prepare the appropriate wrenches or sockets (in most cases they are 10 or 13 mm in size).

Video - how to remove the battery from a Mitsubishi ASX:

The battery will be secured in its compartment. Inspect and figure out how to remove the fastener and what tools are needed for this.

What conditions must be met

Before unscrewing and removing the terminals from the battery, you need to:

turn off the car’s ignition (it’s better to take out the ignition key and put it in your pocket);

turn off all working electrical appliances in the car (lights, radio, headlights and other things that can function when the ignition key is removed). This is necessary to ensure that all electronics connected to turning on the ignition are turned off;

close all the windows in the car, carefully close all the doors and trunk (if your battery is located in the trunk, then, accordingly, the hood);

If your car is equipped with a power switch, turn it off.

If you have the original manual for your car, then check: there may be instructions on what and how to do exactly in your car before dismantling the battery.

When all preparations are completed, you can begin to remove it.

Which battery terminal to remove first?

Remember: the negative terminal of the battery is always removed first ! You can determine where your battery is “plus” and where it is “minus” by the color of the wires (plus is always red) or by the “+” and “-” marks on the battery itself.

This requirement applies to all types of cars: injection, carburetor, with or without an alarm, immobilizer.

Don’t believe it if you read or hear somewhere that it makes no difference which terminal you remove first: “plus” or “minus”.

The negative terminal of the battery is connected to the body of your car - “ground”. By removing the negative terminal, you, accordingly, disconnect the battery from the car body.

In the future, if, when removing the positive terminal, the wrench accidentally slips off or falls out and touches any metal part of the body or engine, nothing will happen.

The circuit: “battery minus - car body” is broken and a short circuit will not occur.

If you start to remove the positive terminal from the battery first and accidentally touch the key to a metal part of the car body or engine, a short circuit will occur, as a result of which, due to a strong current surge, even disconnected electronic devices in the car can be damaged.

Longer contact of the “plus” of the battery with the case can even lead to the battery catching fire and causing a fire.

Procedure

loosen the fastening nut on the negative terminal without unscrewing it completely;
remove the terminal, move it to the side and fix it;

The wires on the battery terminals are thick and elastic, so if they are not secured, the terminal may accidentally “jump” back onto the terminal and cause a short circuit. For fastening, you can use wire or plastic fasteners.

Video - how to remove the battery from a VW Polo Sedan:

If, when you remove the terminal, a spark jumps between it and the battery contact, this means that some device is left turned on (or there is a malfunction in the car’s electrical wiring).

loosen the fastening nut of the positive terminal without unscrewing it completely;
remove the positive terminal and also fix it away from the battery;
remove the battery mount itself.

If the terminal is stuck

If one or both terminals are covered with a white coating, then before removing them, they must first be cleaned with a brush (preferably a hard one, but not a metal one).

If the terminal is “stuck” to the contact, you can use WD 40 solvent. Treat the terminal with it, then carefully pry it from below with a large screwdriver and wiggle it a little. Then try to slightly twist the terminal from side to side until you can remove it.

Important: avoid using too much force to avoid damaging the battery contacts.

How to remove it correctly

After both terminals are removed from the battery, release the battery from the mount that holds it. The battery can then be carefully removed.

When removing the battery, try to hold it vertically to avoid possible acid spillage. Despite the good sealing of modern batteries, sometimes this happens.

Features of removal from a car with an on-board computer

When the battery is removed or disconnected, the on-board computer loses all saved data received from sensors in various vehicle operating modes.

Accordingly, after installing a new battery, you will need to test the car in different modes so that the computer again records and stores the necessary parameters in memory. If this is not done, problems with the engine may occur.

Possible problems when removing the battery

With alarm

When the battery is disconnected, malfunctions in the operation of your car alarm may occur, namely:

loss of one or more keys/remotes;
failure to operate any additional alarm functions.

If this happens, then to restore the alarm, you will need to contact a specialized service.

It should be noted that malfunctions of the alarm when the battery is disconnected are quite rare.

With radio/cassette player

Before removing the battery, check whether your car radio is equipped with a security PIN code. If yes, then make sure you have the correct PIN code.

After disconnecting, all radio settings will be reset and when you connect again, you will need to re-enter the PIN code and configure the radio.

What not to do with a battery

damage the filler plugs and their necks;

turn the battery over or strongly tilt it;

damage contacts (for example, by trying to force unsuitable wire terminals onto them);

store a discharged battery (especially at sub-zero temperatures);

Precautionary measures

Remember, the battery is quite heavy. Hold it firmly and try to avoid impacts to avoid damaging the battery case.

Important! If battery acid gets on your skin or clothing, wash the area with a solution of regular baking soda. If there is no soda, simply rinse the areas where the acid has come into contact with plenty of water.

If you have an alkaline battery, then if alkali gets on your clothes or skin, you will need to wash them with an acid solution. (Regular citric acid or a 10% vinegar solution is suitable for this).

It is best if you wear protective gloves when removing the battery.

When the battery is operating, hydrogen is released from it through the ventilation holes. This gas is extremely explosive. Even a small spark from an accidental short circuit can, under certain conditions, lead to an explosion. Therefore, it is better to work on the battery in a well-ventilated area or in the air.

How to properly connect the battery to a car

Important! When installing the battery in its place, pay attention to the location of the “+” and “-” contacts so as not to place the battery the other way around: with the positive contact to the negative wire.

This will not cause any particular harm - the sizes of the positive and negative contacts are different and it is simply not possible to place the negative terminal on the positive contact without using a hammer.

If you have fully tightened the locking nut on the positive terminal, but it still hangs loosely on the contact, check whether you have put the positive terminal on the negative contact.

Install the battery in the reverse order:

put the battery in its place in the car;
carefully secure it with the standard fastener;
firmly place the positive terminal on the corresponding contact;
tighten the fastening nut;
then repeat the same with the negative terminal of the battery.

If the contacts or terminals are covered with a characteristic white coating, remove it with a stiff brush (non-metallic). You can also use a special cleaner for electrical contacts.

Before tightening the fastening nuts, you can lubricate the terminals with special oil for electrical contacts or technical petroleum jelly.

Easy care

Every time you look under the hood, do not forget to check the condition of the battery terminals and clean them if you see that they are covered with a white coating.

If you don't have time to remove the terminals, an alternative is to simply cover them with baking soda and let them sit for 15-20 minutes. Then wash off the resulting dirt with water.

In addition to contacts and terminals, ventilation holes should be cleaned regularly. They are located in the plugs of the middle battery cans.

Conclusion

Despite the simplicity of disconnecting and replacing the battery, in some modern car models, which are stuffed to the brim with complex electronics (for example, the VW Faeton, the operation of the components and mechanisms of which is controlled by 5 on-board computers and another, sixth, which controls the work of the first five), It is better not to change the battery yourself at all, but to contact an official representative or service station.

The risk of failure of the on-board computer, resetting settings or other troubles is very high, and further repairs or adjustments will cost much more than the cost of replacing the battery.

Video - how to remove the battery from a Citroen Berlingo 2:

May be of interest:

Source: http://voditeliauto.ru/poleznaya-informaciya/avtoustrojstva/akb/kak-pravilno-snyat-akkumulyator-s-avtomobilya.html

How to remove the battery from a car? How to properly remove the battery from a car?

The reliability and stability of operation of modern cars is determined by many factors, including the life of the battery. It can fail unexpectedly and right on the highway, so the battery should be maintained in working condition using special devices.

If the charge is minimal or the device needs repair, then, as a rule, there is a need to remove it. It would seem that the task is elementary - a few simple manipulations, and the battery is removed. In practice, inexperienced motorists are faced with a lot of questions, the wrong solution of which leads to problems with new batteries.

Others even doubt whether it is possible to remove the battery without the help of a specialist? The answer is simple - it is possible, but only with knowledge of the intricacies of this delicate operation.

When is the battery removed?

There are two main reasons for dismantling. Firstly, when the malfunction of the unit is obvious - it needs repair or its final replacement is planned. Secondly, if heating, inspection or other operations that do not involve replacing the battery are planned.

There are no fundamental differences in approaches to removal for the reasons mentioned, but in the first case it is worth carefully examining the contacts, brand, parameters and features of the battery. Understanding how to remove a battery from a car is not enough if you need to install a new one in its place.

In such cases, information about the old model will help with purchasing a replacement device.

In most cases, the battery is simply discharged, and to make charging easier, the car owner dismantles the unit. It is also worth considering that a seemingly unrepairable battery may in fact be serviceable.

A critical sign, upon detection of which the battery can be removed for disposal, is non-functional recharging - in such situations, a process of sulfation of the plates takes place, which no auto chemical product can stop or correct.

Preparing to remove the battery

The main thing that should be taken into account in this operation is the risk of depressurization of potent and even therefore it is advisable to organize the work outside the garage or other cramped space. In open areas the process is carried out more freely and safely.

Knowing how to remove a battery from a car, backed by safety measures, will save you from unnecessary trouble. For example, to minimize the danger from electrolyte leakage, it is necessary to provide appropriate substances and solutions.

For example, soda alcohol or ammonia. If used, a weak acid solution will be required.

These compositions will help to promptly remove traces of electrolyte both on the surface of the machine and on the skin, which, by the way, should also have individual protection.

Disconnecting terminals - which one to start with?

You can start when the ignition is turned off. Then the minus is turned off. This battery terminal is connected to the structural elements of the machine, the engine and almost all metal parts.

This is important to consider in order to understand how to properly remove the battery without the risk of accidental contact between the key, terminal and body metal. This will cause a spark, which should be avoided. And vice versa, when working with a minus, such situations are excluded by definition.

When the negative contact is disconnected, you can safely proceed to the second terminal.

Battery removal procedure

The list of necessary tools is minimal: two keys are enough - 10 and 13 mm. Using a suitable model, the nut is unscrewed, which secures the battery.

Then the fixing bolts are unscrewed, and the clamp must be removed from the front side. Now you can remove the battery, but in such a way that tilting and sudden manipulations are minimized.

In addition, it is undesirable for the battery to come into contact with clothing and, especially, skin.

When the battery is removed, it is recommended to perform an initial inspection and basic cleaning - this will be required for safety reasons and regardless of what you plan to do with the battery in the future.

First, it is necessary to assess the condition of the unit regarding tightness - cracks and traces of electrolyte leakage must be strictly recorded.

By the way, the sequence of how to remove the battery allows you to detect possible defects in the case even during the dismantling process.

Next, the terminals, housing, clamps, as well as other surfaces and elements are cleaned. If areas of corrosion from spilled electrolyte are found, then it is necessary to use the same prepared solutions.

In some cases, such areas are also painted.

To facilitate the described preventive measures, before removing the battery from the car, it is worth providing a set of chemicals, oils and wipes.

Caring for a removed battery

In general terms, the primary measures for servicing the seized battery are noted. However, if you plan to use it further, serious care of the device may be required. And yet, before removing the battery, it is necessary to keep in mind the possibility of its further use.

First, the block should be rid of smudges. The battery grooves into which the plugs are screwed must also be inspected. The ventilation holes are also cleaned.

The gas outlet channels are integrated into the set of colored plugs and should also be checked.

Timely, simple measures to care for the battery will ensure proper and long-term operation of the car, and will also minimize the need for regular removal and replacement of the battery.

How to install the battery?

Having figured out how to remove the battery, you can move on to a description of its installation. This procedure is seemingly simple, but also requires knowledge of the nuances.

In this case, the role of preparation is great - that is, in what condition the battery is installed. Two indicators are important: the fullness of the block with electrolyte and its density. The second can be checked only 3 hours after pouring.

If the density is insufficient, the device needs to be recharged.

Direct connection of the terminals is carried out in the opposite order to the dismantling procedure - you need to start with red. Next, bolts and other clamps with fasteners are fixed.

Having mastered the procedure for removing the battery, you can easily complete this part of the activity of replacing the power source.

In addition, if possible, it would be a good idea to use lithium grease, which will prevent oxidation processes in the contacts.

Optimal location

If the battery is located close to the exhaust manifold, then in the summer it is recommended to insulate it with a metal plate. In winter, it is desirable to ensure that radiator thermal energy is directed to the battery, which will prolong the operation of the latter.

Source: https://1skidka.com/page.php?id=6942

How to properly remove the battery from a car

The need to remove the battery from its original location may arise for various reasons. This may be required for repairs, sales and replacement of the battery.

Although few people know how to remove a battery, the procedure is quite simple. Every owner with minimal experience working with a wrench can cope with this task.

But you still need to know a number of secrets, without which there is a high risk of harming important nodes.

Necessity of the procedure

Despite the fact that such a need may be caused by various circumstances, among them there are several main ones:

Most often this is required when you need to charge the battery. Even if everything indicates that the battery is “dead,” this is not yet a reason to replace it. The first thing you need to do is recharge it, and then bring it to the garage or give it to knowledgeable people for inspection. And in order for this to be done, the battery must first be removed from the car.
Storage. With the onset of winter, most owners leave their “swallows” in parking lots, where they wait for their owners for months. Some people prefer not to waste time removing the battery, others limit themselves to just removing the terminals, while others do the opposite - remove the battery and take it home. At home, you can ensure constant monitoring of the condition of the battery, its charge and, if necessary, recharge.
Service. To maintain the battery in working condition, the owner must regularly check the condition of the electrolyte, add distilled water to the jars, take density measurements, and, if necessary, recharge the battery. These operations can be performed directly in the engine compartment, but it is most convenient to first remove the battery and service it in a more suitable place to avoid spilling the electrolyte.
Replacement. If a battery fails prematurely, it is not always possible to restore it. In such cases, you have to think about buying a new one. And, of course, first the owner must remove the old battery.

Do-it-yourself battery dismantling

Before you remove the battery, you need to climb into the hood and find out exactly how it is secured..

In most cases, it is fixed using a special bracket or tie, which prevents it from jumping around the engine compartment.

To dismantle this tie, most often it is enough to unscrew the nut to “10”, although in some cars it can be tightened to a nut of a larger diameter: “12” or “13”.

Sometimes there are cars in which the battery is installed under the seat. Most often this happens on elite models. In this case, in order to remove the battery, you will first have to dismantle the driver's front seat, and after all the manipulations have been completed, install it in its original place.

After this, you need to carefully examine the terminals and understand exactly how they are connected to the battery. In most cases, they are fixed with 8-10 nuts.

Based on this, it is necessary to prepare keys for 8-10, as well as 12-13, for dismantling. Additionally, it won’t hurt to purchase gloves; cloth gloves will do as well.

After this, you can proceed directly to removing the battery. Disconnecting a car battery from foreign and domestic cars is carried out in the following order:

The first step is to open the hood.
Next, remove the noise insulation from the battery or fabric protection.
Then you need to remove the negative terminal. Finding it is quite simple: it has a special hint in the form of a minus. Experts recommend removing it first, since it is screwed to the car body. If you remove the positive terminal first, then at the first contact with it with the key a strong short circuit will occur. Keeping this in mind, it is necessary, first of all, to de-energize the body, and to do this you need to remove the “minus”. Only after this can you remove the “plus”.
When the body is de-energized, you can begin to remove the fasteners securing the battery. They can be a bar that encircles the entire battery, or it can be a plate at the bottom.
Now you can remove the battery itself from the seat.

Removal with the engine running

Before you begin removing the battery, be sure to turn off the engine. Dismantling the battery while the engine is running is strictly prohibited. Several reasons can be given to explain this:

If the engine is running, it still continues to be charged by the generator. If you try to remove the battery at this time, the positive terminal may fall on the car body, and this can lead to a short circuit. And then the car owner, with his ill-considered actions, can easily burn the generator, and with it the wiring and the entire car.
If you try to disconnect the battery while the engine is running, this may cause a voltage surge in the on-board network. As a result, the ECU, generator regulator relay, alarm, and a number of other important systems may be damaged.

If the owner is aware of these two points, this will be enough for him to make sure that the engine is turned off the next time he is about to remove the battery. He should also know that the battery can only be removed from the car with the ignition off. Moreover, for greater safety, it is recommended to completely remove the key from the ignition switch.

Such forethought will also help to avoid many unpleasant moments. After all, when the ignition is turned on, voltage surges may occur, and if the battery is removed without taking this moment into account, this can create a serious risk of setting something on fire.

Impact on electrical and ECU

Before removing the battery from the car, the car owner must read the instructions to do everything correctly. And under no circumstances should you neglect this.

After all, not everyone knows that on luxury cars, for example, Lexus or Infiniti, you should not remove the battery without apparent reason.

Each such battery includes several ECUs (electronic control unit), which provide control of certain functions of the machine. Most often this is either an audio system or a number of important auxiliary ones.

After disconnecting the battery, the settings in the auxiliary ECU may disappear. Therefore, experts recommend doing this exclusively at an official dealer station.

In this case, after servicing the battery, the owner will not have any difficulties in restoring the original settings.

However, you should know that these cars have mandatory recommendations, which can be found in the operating instructions.

Other cars also have their own nuances for removing the battery. For example, some have special toggle switches that can turn off the power system. Therefore, they must also be used before removing the battery.

If we talk about the remaining 80% of cars, then when working with them, removing the battery is much easier.

Many of them are equipped with only one ECU, and its firmware contains settings that do not get lost even after the power is turned off.

After removing the battery, only the clock, radio station and equalizer settings may be lost, but it will only take a few minutes to restore all this.

It is generally accepted that removing the battery from a car can seriously damage the electrical system, primarily the wiring. If you think logically, then even after turning off, for example, a flashlight battery, no damage will occur to them. It is enough to install a new one, and it will work with the same success. The same is true with car batteries.

Precautionary measures

To prevent the procedure for removing the battery with your own hands from ending in trouble for the car owner, he should follow a number of rules:

Over time, the terminals may oxidize. And in order to remove them, some owners often hit them with a heavy object at hand. But under no circumstances should you do this. This can lead to their permanent failure, or they will fall apart into smaller parts and are highly likely to cause complete breakdown of the battery.
After removal, the battery must be handled with care. Don't throw or kick her. Otherwise, this may cause electrolyte leakage or cause damage to the active mass.
Do not place the battery on its side or upside down. Such a ban is due to the risk of leakage of electrochemical fluid and even short circuit.
Do not drain electrolyte from cans. It contains sulfuric acid and distilled water, which can cause burns if in contact with skin or clothing. This procedure must be carried out only in specially prepared places.
Do not add acid or electrolyte. This can only be done during special restoration work. In all other cases, the level of density may increase significantly, and this is fraught with sulfation of the plates. Only purified water can be added.
Under no circumstances should you store a completely discharged battery in the cold. If it freezes, this can provoke shedding of the active mass, which most often happens in half of the cases.

Operating a car involves more than just pleasant moments for the car owner. But often it is necessary to carry out other procedures. One of them is removing the battery.

Although in some cases this operation is simply necessary, it is not worth resorting to in the absence of an urgent need. After all, the battery can affect the operation of other important systems, and not always for the better.

Therefore, before removing the battery from the car, you need to make sure that there are serious reasons for this.

In general, this procedure is not complicated. Even a novice car owner can cope with this task.

But in any case, it won’t hurt to prepare for it, study the theoretical aspects of its correct implementation, and find out how to properly disconnect the battery terminals.

After all, knowing certain secrets, including the sequence of removing terminals from the battery, will help not only complete this procedure as quickly as possible, but also avoid serious problems associated with the operation of other important car systems.

This is especially true when the battery is planned to be removed from luxury cars.

Therefore, if a person does not have experience in dismantling the battery from such a vehicle, then it is better not to take risks, but to entrust this work to experienced specialists from an official service.

This will not only save a lot of time and effort, but also avoid unpleasant moments caused by incorrectly carrying out this necessary procedure.

Source: https://proakkym.ru/avto/kak-snjat-akkumuljator

How to remove a battery: principle of approach and precautions

Removing the battery from cars may be necessary in various situations. For example, for repair work or sale. To properly remove the battery you do not need any specific knowledge; anyone can handle this task with a screwdriver and a wrench.

But there are several nuances that any car driver should know. Otherwise, you risk damaging the engine.

Principles of approach

Basically, all car manufacturers note several recommendations for dismantling the battery in their vehicle passports. Some cars are equipped with a toggle switch that serves as protection in case of sudden battery disconnection.

Occasionally you can find a machine that has a shield designed to disconnect the mass. Consider these details. They are required when removing terminals.

Important! For additional safety against sparks, purchase a special fuse and install it on the negative cable of the battery. Please remember to handle this equipment with care.

Precautionary rules

Do not throw or hit it under any circumstances.
Do not place it upside down or on its side. Otherwise, the electrolyte will clog the holes intended for ventilation.
Do not drain the electrolyte as this may cause sediment to float and then clog the holes.
Do not hit the terminals.
Do not store batteries that have been used for a long time.
Do not use force when removing or installing.
Do not put acid/electrolyte into it. Only distilled water is allowed.

To dismantle the device, the following tools are required:

Wrench.
Not a dirty brush.
Reaction activator neutralizer. This is an additional precaution that will only be needed if you spill electrolyte.

Important! Before removing the battery, do not forget to check if there is a ground connection on the case, and only then can you remove it.

Safety regulations

Do not forget that you are planning to work with quite caustic substances. For this reason, it is recommended to consider all security measures in advance.

If you will use acids, then before removing the battery, prepare alkali (10% alcohol or soda) in advance. You can use a weaker solution if your battery is alkaline.
If electrolyte gets on the skin or on the surface of the car, be sure to treat it with special substances. Make sure to protect your hands in advance, wear goggles over your eyes, and cover the rest of your body with clothes.
Work should only be carried out in well-ventilated and lit areas.

How to remove it correctly?

When removing the battery from the car, you will have to perform the following sequence:

Take the key and disconnect the thermal insulation elements, if any.
Using a key, remove the protective caps.
Remove the negative terminal.
Then disconnect the terminal on which the plus is drawn.
Unscrew all the strips and nuts that secure the battery.
You can take out the device.

Installing the battery involves performing the same steps, but the order of the steps should be reversed.

Prevention

If you did everything correctly, then after removal you need to carry out a certain sequence of actions required for prevention. First, clean the battery of sodium carbonate. Check all plugs, they should be tightly tightened.

To remove electrolyte, wipe the lid with a solution of baking soda, and rinse off any remaining dirt with water. Don't forget to wipe the lids with a dry cloth. All removed plates and plugs must undergo the same procedure. Now start cleaning the ventilation.

Important! Greater care is required for those batteries that have special compartments for storing batteries. After all, it is in these places that deposited electrolyte and various dirt accumulate.

If you occasionally clean the device or stop doing it altogether, your battery will quickly fail.

In some cases, the battery is located too close to the exhaust manifold. Then you will need to put a simple sheet of metal between them.

After removing the battery, check its voltage, density and electrolyte level. If necessary, connect the charger to it and remove any corrosion tracks.

Nuances

Work should only be carried out with the engine switched off. Otherwise you will cause a power surge. The standard system will not suffer from this, but the same cannot be said about electronics.

Mainly because of this, the alarm system, the settings of many devices, and sometimes the on-board computer fail. Some drivers report airbags deploying.
Many people do not know which terminal to remove first.

To avoid harm to the electronics, it is recommended to disconnect the negative terminal first. This is due to the fact that the “minus” is associated with the car body.

If you remove the plus terminal first and are not careful, it can connect to ground, which will cause a short circuit.

The presented rules and tips will help you correctly remove the battery from the car.

How to properly disconnect a car battery

Novice drivers sometimes have difficulty performing basic actions for experienced drivers. Among the main ones are operations with the battery, because when it is shorted or replaced, they rarely turn to specialized centers. And when cold weather sets in, its performance becomes key, allowing you to start the engine even in severe frosts.

The battery is usually located under the hood, so it is easy to access. However, in some brands of expensive cars it may be located under the seat. An even more complicated case is when there are two batteries. Such situations require the intervention of professionals and are carried out in specialized centers.

You cannot do without removing the battery in the following cases:

For recharging. If the engine does not start when you turn the ignition key, the first thing to check is the battery. To do this, remove it and bring it to a warm place to charge it.
If the vehicle is not used for a long time. If the car is not planned to be used in winter, it is left in a garage or in a parking lot. Without regular recharging, the battery may completely fail, so it is best to remove it and store it in a warm place.
To carry out maintenance. Checking the electrolyte level, adding distilled water and measuring density can also be done directly under the hood. However, this can be fraught with electrolyte leakage and damage to the battery. To carry out such manipulations, it is better to remove the battery.
For replacement. A battery that has completely lost its ability to charge or is simply damaged and cannot be restored is replaced with a new one. Considering the service life of this part, this is done at least once every three years.

IMPORTANT! Before removing the battery, you should prepare the necessary tools and protective equipment in advance.

Personal safety measures at work

When removing the battery, safety precautions should be followed, which include:

Use of protective equipment during work. Since the battery is thirty-five percent sulfuric acid, it is best to use rubber gloves. When it comes into contact with the skin, this acid gradually eats away, leaving significant burns. If the leak is discovered late and contact with the skin cannot be avoided, the damaged area should be treated with soda diluted in water. It neutralizes acid and prevents severe burns.
Careful handling of the battery. The operating instructions for the battery must be followed completely.
Work on the battery should be done indoors with good ventilation or outdoors. Hydrogen is released from the battery vents, which in significant concentrations can cause an explosion.

Before work, you need to prepare alcohol soda or a solution of water and baking soda. If the battery is alkaline, a weak solution of any acid will help get rid of traces in time. You can use ten percent vinegar or a solution of citric acid. Any moisture-absorbing rag or rag will also come in handy.

To protect your eyes from accidental sparks from the terminals, you can use safety glasses. It is better to remove any metal jewelry - rings, chains, bracelets, as they may accidentally come into contact with battery parts and become conductors of electric current. This not only leads to a short circuit, but can also cause harm to the car owner.

ATTENTION! Proper preparation will avoid significant damage to both person and vehicle.

How to properly disconnect a car battery

The battery holds a current charge that is used for:

Starting the engine: Without the small spark that this device provides, you will not be able to start the car.
Using media devices with the engine off. This also applies to interior lighting, phone charging, and car radio operation.
Generator support in cases where it cannot cope with the load. Particularly noticeable assistance is provided during long periods of idle time in traffic jams with the air conditioning, windshield wipers and rear window heaters on.

Before disconnecting the battery, you should perform a number of manipulations:

Be sure to turn off all devices - interior lights, radio, headlights. When removing the battery with the devices turned on, a short circuit may occur.
Turn off power to the engine. It is better to remove the keys from the ignition and put them in your pocket, as some car models automatically lock the doors when the battery is removed, which will make it difficult for the owner to get inside.

To remove the battery, you will need a wrench; as a rule, most models use 10 and 13 mm wrenches. Procedure for disconnecting the battery:

Open the hood;
If sound insulation or fabric protection is installed, they must be removed;
Open the plastic protective caps from the terminals, if any;
Unscrew the nut on the terminal with the “-“ sign;
Remove the terminal from the battery and place it to the side;
Unscrew the nut from the terminal with the “+” sign;
Remove the terminal and take it to the side.

After these steps are completed, the battery is disconnected and ready for removal. The terminal with the “-” sign should be unscrewed first, since it is connected to the car body. If you first disconnect the positive terminal, the negative terminal will remain connected and, if the key accidentally touches a metal part of the car, it can cause a short circuit.

If, when removing the battery, the terminals begin to spark, this means that one of the car’s devices that consumes electric current remains turned on.

ATTENTION! Do not hit the terminals to disconnect them. If a white coating has formed on them, you should first clean them with a brush (a metal one will not work). You can use a special solvent. After treating the terminals with it, you can slightly loosen them with a screwdriver, after which it will be much easier to remove.

How to properly remove a car battery

The battery is secured under the body using a plate or a special strip. To remove the battery, you will need to disconnect it. After this, the battery is carefully removed from its place. It should be remembered that the weight of the battery can be up to twenty kilograms. If you don’t have enough strength to lift such heavy weights on your own, it’s better to take care of finding an assistant in advance.

IMPORTANT! Many car enthusiasts check the current strength by striking the terminals with metal tools. Such actions may result in a noticeable electrical charge.

What not to do with the battery

There are a number of prohibitions when working with a battery. When removing the battery, you must not:

Lay on your side, keep upside down. Ventilation holes may become clogged with electrolyte;
Allow mechanical impacts - impacts, falls. Physical damage can lead to depressurization of the battery and loss of properties;
Drain and refill electrolyte. The remains float up from the bottom and clog the holes with a cement crust. Only distilled water can be added;
Use force when installing the terminals onto the pins. It is especially dangerous to hit them with a wrench;
Store discharged products in the cold.

These rules cannot be neglected, as this can lead not only to damage to the battery itself, but also to harm to the car owner.

Caring for a removed battery

If the battery is removed for charging, you should simply take it to a warm place and connect it to a power source. In this case, you can perform preventative cleaning, which includes:

Cleaning all surfaces of sodium carbonate;
Checking the tightness of the plugs;
Neutralize the deposited electrolyte on the lid with baking soda;
Cleaning ventilation holes.

In this way, not only the battery itself is cleaned, but also the strips, plugs, plates and holes intended for fastening. Before returning the battery to its place, wipe all treated surfaces dry with a rag or any suitable cloth.

How to reinstall the battery

Reinstalling the battery is as follows:

The battery is carefully installed in its place;
Secure with a plate or strip;
The terminal with the “+” sign is installed in place and fixed;
The terminal with the “-” sign is installed in place and fixed;
The protective caps are closed;
Sound insulation or fabric protection is installed in place;
The hood closes.

After this, you should start the engine to make sure that the installed battery is working and that all actions performed are correct.

As a rule, removing and installing the battery is difficult only the first time. It is important to handle this part with extreme care, and also not to neglect personal protective equipment in order to protect yourself from the consequences of exposure to electrolyte.

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Source: http://jrepair.ru/interesnoe-na-jrepair-ru/agregats/kak-pravilno-otklyuchit-akkumulyator-na-avtomobile