How to connect crocodiles to the battery. How to properly light a car? Detailed instructions

Almost every car owner has encountered a situation where accumulator battery the car was discharged after an overnight stay in frost. The most effective way to start the car is by lighting it from another battery. At the same time, it is important to properly light a car from another car and not damage the electronic and electrical circuits of both cars.

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Signs and Causes of Battery Discharge

Signs of a low battery level in a car are:

sluggish starter operation, while control lamps cars shine very dimly;
with a large battery discharge, the current is not enough even to turn the starter;
when you try to start the engine, the solenoid relay crackles, and all the lamps on the instrument cluster go out.

Similar symptoms are observed with insufficient wire contact on-board network at the battery terminals. Therefore, first of all, it is necessary to check the reliability of the installation of these elements on the battery.

The video from the channel VAZ 2101-2107 REPAIR AND MAINTENANCE demonstrates the procedure for measuring battery leakage current.

The reasons for the discharge of any battery are:

Insufficiently efficient operation of the generator - a weakly tensioned belt, failure of the components of the generator itself.
Damage electrical wiring because of which there is increased consumption electricity. In this case, the battery can be discharged even in a car with the keys removed from the ignition lock.
A common cause of discharging is additional alarms, which consume a lot of current due to design features (for example, two-way communication systems) or due to improper installation.
With infrequent use of the machine, a gradual self-discharge of the battery occurs. Therefore, it must be periodically removed from the car and charged from a special charger.
Over time, automotive lead acid battery grows old and begins to lose its capacity due to irreversible chemical processes... In winter, as the ambient temperature decreases, the drop in capacity increases even more. The service life of modern batteries rarely exceeds 4-5 years.
A deep discharge, which is extremely harmful to the battery, can occur due to the dimensions lamps left on, the interior lighting or the radio tape recorder.

Ways to start a dead battery

A reliable way to start a car with a dead battery is lighting up - supplying voltage to the on-board network from another source. Such a donor can be a battery installed in another car or in a special portable device called a Jump Starter (booster). In many large cities, services have appeared that offer the service of a car mechanic's departure with the possibility of lighting a car from a booster device.

Booster model Telwin Speed Start 1212

The automatic booster is a compact device with a built-in lithium-ion battery capable of delivering starting current from 400 to 4000 A (depending on the model). Such a starter battery is capable of giving at least 20-40 starting pulses, but this depends on the degree of battery charging and starting conditions.

An alternative way is to start the engine with a dead battery from the tug. But this option is only suitable for cars with a manual transmission. It is strictly forbidden to tow cars equipped with automatic transmission.

Requirements for wires for lighting

A special cigarette lighter is used to connect the battery terminals. It consists of thick wires with clamps at the ends, with which the cables can be picked up to the battery terminals. Since when starting, the wires between batteries go high current, then they are heated to significant temperatures.

Therefore, the cables must meet the following requirements:

Only copper stranded conductor is allowed.
Cable cross-section for starting standard gasoline engine with a cylinder volume of up to 1.5 liters, it must be at least 16 mm2 (corresponds to a diameter of 4.5 mm). For universal wires, the cross section is about 70 mm2 (diameter 9.5 mm).
The wires must have insulation resistant to temperature extremes. Silicone is considered a suitable material.
The optimal length of the wires is about 2 meters, since this will allow the engine to be started from a car parked at a long distance. In this case, it is necessary to ensure a low voltage drop - no more than 2.3 V for every 1.5 meters of wire at a current of 200 A (or 1.3 V at a current of 100 A).
The cable and alligator connection must have a reliable electrical contact and not serve as a place for voltage drop or overheating. V ideal option the joint must be solid or well soldered with tin solder.
The wiring must be guaranteed to operate at a current of at least 200 A - the minimum threshold for lighting passenger cars... To do this, there must be sharp teeth on the working part of the clamps, which will ensure reliable contact with the battery terminals.

General view of wires for lighting

The consequences of trying to light up with wires of inadequate quality will be very sad. V best case the cables themselves will burn out, at worst - all the wiring under the hood of both cars may burn out.

Safety engineering

Before starting work, you need to remember the basic nuances of how to properly light a car from another car.

Regardless of the time of year, when performing lighting, you must follow the rules:

Before starting the start, you must remove the keys from the lock and open the doors in a car with a dead battery. This is necessary to avoid involuntary closure. central locking when voltage is applied to the on-board network from a donor.
The voltage of the batteries and the on-board network of cars must be the same - 12 or 24 V.
The negative "crocodile" from the donor battery should be attached only to the engine crankcase or to an unpainted car body element with a dead battery.
Before lighting a cigarette, check the condition of a dead battery. If it freezes, the procedure is prohibited, as this may cause the destruction of such a battery. The check is carried out visually through the plugs in the upper parts of the battery cans. The frozen electrolyte looks like a fairly liquid jelly. This test cannot be performed on maintenance-free batteries.

How to properly light a car

Most car owners do not disconnect the wires from the donor car battery. Problems usually do not arise, but to fully guarantee the preservation of the functionality of the electronics, it is better to remove the wires from the battery terminals.

Before starting work, it is necessary to establish the type of vehicle electronics.

Release before 1990

The most simple electronic circuits used on vehicles with carburetor system fuel supply or the first injection systems, including foreign cars produced before the early 1990s. Such cars can be safely lit without removing the battery from the donor car.

To start the engine, follow these instructions step by step:

Place cars nearby, bodies should not have points of contact.
Do not turn off the donor engine.
Connect the positive terminals first and then the negative terminals.
The donor driver needs to maintain an increased speed of up to 2-2.5 thousand rpm to ensure the operation of the battery charging system.
The owner of the second car must wait a few minutes for the battery to start charging.
Start the engine and disconnect the terminals, first negative and then positive. If, after several attempts to start the engine, it does not work, then it is necessary to check the ignition and fuel supply system. In some cases, the car is started with the discharged battery removed, which is connected to the on-board network later.

Connection diagram for lighting, indicating terminals and connection points

Issue 1990-2000

With the advent of injection engines the number of electronic units in the circuit of cars has sharply increased, which react very sensitively to sudden changes in voltage in the on-board network.

If the battery is dead on a production car before the beginning of 2000, then the connection procedure is as follows:

Place cars nearby, bringing them as close as possible engine compartments... Car bodies should not touch.
Muffle the power unit of the donor vehicle.
Disconnect the wires from the battery terminals on the donor.
Connect the positive terminal of the discharged battery with the positive terminal of the donor battery.
Connect the negative terminal of the donor to the body or to the crankcase of the engine of another car. The body element must not have paintwork... When this wire is connected directly to the negative terminal of a dead battery, all the energy of the charged battery will go to recharge.
Wait a few minutes for a small recharge of a dead battery.
Switch on the ignition and try to start the engine. If several attempts to start do not lead to success, then stop further attempts to start the engine.
In case of a positive result, it is necessary to warm up the unit and recharge the dead battery a little.
Stop the engine after 6-8 minutes of operation.
Disconnect the negative and then the positive wire.
Try to start the engine from the native battery and let it run for 10-15 minutes to fully warm up the engine and start charging the battery.
At the end of the trip, check the condition of the battery and electrical wiring, fully charge the battery with the charger.
In case of constant repetitions of the problem, you need to more carefully check the wiring for leaks or replace the battery.

Release after 2000

The optimal procedure for starting a modern car with a diesel or injector from a battery or booster is as follows:

Place the battery or booster device next to the vehicle. When starting from the booster, you should carefully study the manual for its operation.
Connect the wires in the sequence - the positive pole from the donor to the positive terminal of the car, and then - the negative wire to the engine crankcase.
Start the unit and let it run for 5-7 minutes without disconnecting the booster or the second battery.
Turn off the engine and disconnect the negative wire, and then the positive wire.
Remove the booster device or additional battery and start the engine from the standard battery of the machine.
After the end of the trip, recharge the battery and check the operation of the on-board network.

In what cases it is impossible to light a cigarette

It is not allowed to start the engine of one car from the on-board network of another in the following cases:

Do not light a car with a smaller battery. A difference of up to 15% is permissible, otherwise a rapid discharge of the donor battery will occur.
Battery voltage mismatch. Do not connect 12 and 24 volt batteries to each other.
The appearance of a smell of burning wiring or fuel is a signal to terminate the procedure until the reasons for its occurrence are clarified.
It is not recommended to use cars with automatic transmission as a donor due to the risk of damaging the control unit. On such cars, it is necessary to disconnect the battery from the mains and only then try to light another car from it.
A gasoline engine must not be started from a diesel vehicle battery.
It is forbidden to use connecting wires of small cross-section and cables with damaged cores or insulation. The use of such wiring will lead to a short circuit and failure of the electrical systems of both vehicles.

Many manufacturers prescribe in the on-board literature a ban on the use of a car battery as a power source for another car. If such information is indicated, then it is better not to use your car as a donor, since you can lose warranty service a car in the event of a breakdown due to this procedure.

Which connect "in parallel" the terminals of the batteries of two cars - yours and the "suffering". That is, plus to plus, minus to minus. Just? Not really. In any case, any publication on this topic immediately generates a flurry of controversy and comments - they say, everything is wrong, everything is wrong!

Myth 1. Neighbor refuses to light a cigarette

It's not about greed - he fears for his car. Because servicemen and electricians of all stripes speak to him with one voice, they say, there is no need to do this. Say, your car was not designed so that someone would cling to wires for, and even connect with it is not clear where ... There are plenty of scarecrows about how, after such operations, the standard electronics of the donor machine failed. How true they are all, in this case, does not matter: just do not be surprised that the neighbor does not want to take risks.

In the old days, such an operation was in the order of things. Muscovites lit up from Zhiguli - and that's okay. But that was a very long time ago, when cars were incomparably simpler. And today they have become akin to a computer and therefore too pampered. And the risk of damage from power surges is really great.

Myth 2. Lighting a car with a disconnected on-board terminal of the donor car

It's much safer to light a cigarette. But even in this case, the greedy neighbor can be understood. Firstly, on many cars they are hidden under plastic shields, and today you cannot find a suitable tool in the average trunk. And secondly, many modern cars categorically do not tolerate even a short-term disconnection of the battery. After that, the owner will have to contact the service, losing time, money, and if not at all lucky, then the guarantee. We are talking, of course, about cars of a high price category, but not everyone wants to carry out such experiments, even on inexpensive cars... What if they also became moody?

Myth 3. The sequence of actions when lighting a car

Need to connect external battery parallel to the standard one - this requires thick connecting wires. Thin ones are absolutely useless to start.

The sequence is as follows:

Connect the positive (+) jump lead to the positive (+) lead of the donor booster battery and then to the positive (+) lead of the discharged battery.
Connect the negative (-) cable to the negative (-) terminal of the booster battery, and then to the engine block of the stubborn vehicle. Although it is best to grab onto the lifting eye power unit- usually easy to find. As a last resort, if there is no access to the "metal", connect it to the (-) terminal of the battery of the dying car.
Make sure the cables do not touch the fan blades or other moving parts of the motor.
Try to start a moody motor. If it worked, disconnect the negative wire (first from the capricious car, then from the donor battery), and then the positive wire in the same sequence.
Let the revived car run - in general, do not jam it right away. Without a recharged standard battery, he will not have life anyway. Later, it would be good to understand the reason for the death.
And if there are no normal thick wires? Jokes are jokes, and finding them today is a big problem. What is on sale is 99.9% disgusting Chinese ephemera with thick insulation and tiny wires inside (see photo below). In an extreme case, if the thick wires have not been found, you will have to use what you have, but the "pleasure" will have to stretch for at least 15-30 minutes, until the charges of the two batteries are a little equal. After that, you can try to start the engine.

How to properly "light" a car? This question can arise at any time, but it becomes especially relevant in the cold season. After all, when low temperatures even new batteries run down much faster. There are a number of nuances that you need to know before you "light" the battery from another battery. In particular, technical equipment, order of actions, precautions. We will tell you about all this and not only in detail.

First of all, it is necessary to determine the situation when it makes sense to "light up". The procedure is performed only in case of battery discharge (full or partial). In this case, the starter turns at insufficient speed or. If the starter works normally, and the car does not start, then you need to look for the cause of the malfunction in another.

Mistakes when "lighting up"

Here are a few typical mistakes that inexperienced car owners allow. We have tried to rank them in order of priority in terms of safety.

They "light up" from a car with a running engine.
Do not turn off the ignition and / or electrical appliances during the "lighting" process.
They "light up" from a battery that has a lower capacity than that of their battery.
The sequence of actions is not followed (algorithm for connecting individual contacts).
Do not use quality wires or wires with a small cross-sectional area, poor-quality contacts on "crocodiles", fragile insulation.
Do not adhere to safety rules (including fire).

In order to avoid the occurrence of these errors, and to make it clear for car owners, we offer you a clear algorithm, following which you can safely start the engine of your car from another battery.

The correct lighting process

Connection diagram for "lighting"

Now let's move on to the consideration of the algorithm of how to properly give a “light” to the car. The sequence of actions will be as follows:

Before the procedure, the engine of the donor machine should run for about 5 minutes at 2000 ... 3000 rpm. This is done so that the battery is additionally recharged.
Before "lighting" engines, ignition, as well as all electrical appliances of both vehicles must be turned off! This is a mandatory requirement, which we will talk about next.
Connect the ends of the "positive" wire first to the battery of the donor machine (from which they "light up"), and then to the recipient machine.
Connect the ends of the "minus" battery wires. First, to the "minus" of the battery of the donor machine, and then to any metal surface cleaned from paintwork (for example, an engine block) or to a protrusion on the machine body. However, remember that at the moment the engine is started, there is a possibility of a spark on the "minus", which can get on the accumulation of oil and dirt, which in turn can provoke a fire and even an explosion. So observe fire safety, and light a cigarette outdoors or in a well-ventilated area. If you have not found a suitable protrusion, then connect the wire to the negative side of the recipient's battery.
Be sure to observe the polarity! One wire should connect two "pluses", and the other - two "minuses". If you reverse the polarity, a short circuit will occur and there is a high probability of damage to all of the vehicle's electronics. And this is fraught with expensive repairs!
Sit on the steering wheel of the recipient vehicle and try to start the engine. If the donor car battery is in order, and you did everything correctly, then the motor will start without problems.
Set the number of engine revolutions within 1500 ... 2000 rpm, let it run for about 5 minutes so that the battery gains some capacity.
Disconnect the wires from both batteries in reverse order (that is, first disconnect them from the recipient, and then from the donor, first remove the "negative" wire, and then the "positive" one), pack them, close the hoods of the cars.

"Light up" the battery from a battery with the same voltage (most passenger cars it is 12 V, but trucks may have 24 V, and motorcycles may have 6 V). Failure to comply with this rule will result in discharge and possible damage to the battery.

How to properly "light" a car

If it was not possible to "light" the car within a few seconds, then you should not "torment" the battery. Try the following:

With the wires connected and the engine off and ignition at the recipient, start the donor engine.
Let it run for about 10 minutes at 2000 ... 3000 rpm. This will recharge both batteries.
Turn off the engine, ignition and all electrical appliances of the donor. Try again to start the engine of the recipient.

Usually at diesel cars the volume of the battery is larger, so you can “light up” from them, but not all gasoline cars can give them their charge.

Thus, it is not difficult to properly "light" a car from another battery. Now let's take a look at a few common myths and helpful tips.

Additional information and myths

Connecting "minus" to the engine body

A common question among motorists - is it possible to light a cigarette from a running car? There is a very definite answer to it - NO! This is strongly discouraged. Let's try to explain why ...

The fact is that at the moment of starting the engine, switching processes occur, the result of which is a significant jump in current. When the engine is turned off, it only participates in the circuit. If the engine is running, then the generator and all other current consumers (including expensive ECU and other electronics) are connected to the circuit. And for them, sudden surges in current and voltage are very harmful, since they can disable them.

When "lighting" the donor car, it is desirable (but not necessary) to remove the negative terminal from the battery. This will provide complete isolation. electrical circuits two cars apart.

Remember that you cannot ask the owner of the first car you see to "light a cigarette". Ideally, the capacity of the donor battery should be at least equal to or greater than the capacity of the recipient battery. Otherwise, there is a risk of complete discharge of the donor, and even its failure. And at the same time, most likely, you will not start your car. In other words, you can “light up” a small car from an SUV, but vice versa - you can’t!

Also, you can not "light" the battery and from one that heats up, emits a strong acidic smell or electrolyte leaked out of it.

It is not recommended to "light" from old or discharged batteries. Therefore, if your colleague's driver refused your request, arguing that the battery of his car is old, then this should be treated with understanding.

Today, car dealerships offer devices for emergency battery starting, the so-called starters. They are analogous to "power banks" for electronic gadgets. It is simple and safe to "light" from them.

Another common myth is that supposedly it is impossible to "light" a car with electronic unit control (ECU). In fact, this is not the case. If the engines of both machines are off, there is no danger to the electronics. The only thing you have to keep in mind and what we have already mentioned is it is categorically impossible to "light" from a car with a running engine.

Choice of wires

To properly "light" a car from another car, you will need special wires with "crocodiles" at both ends. You can buy them at any car dealership. The cost is around 1000 rubles. For example, the price for AIRLINE is 950 rubles. Try to buy cables of medium or long length, because otherwise you may encounter inconveniences during work. Factory wires have different colors of insulation, usually black and red. The black wires connect to the minus on one and the second battery, and the red wires to the plus.

Instead of factory wires, it is quite possible to use any improvised ones with a suitable cross-sectional area. It should be at least 16 mm² (and preferably from 20 to 32 mm²). In this case, the stripped ends must first be tied with a loop of the same diameter as the battery terminals. And then just put them on.

When buying wires for "lighting" it is necessary to pay attention to the following nuances:

Cross-sectional area... The larger it is, the more current can walk on it. If you buy a frankly cheap wire with a thin core, then there is a high probability of its burnout, especially when connected to large-capacity batteries. Minimum area cross-section must be 16 mm².
Length... A short wire is inconvenient to use. Therefore, buy products at least 3 meters long.
Insulation material... Do not buy braided wires. The fact is that in the cold it hardens and can crack. Better buy wires in soft PVC insulation. They are better to bend and do not crack at sub-zero temperatures.
Crocodile clips... It is desirable that they be copper, or at least have a copper-plated surface. This will improve their conductivity. Also pay attention to their teeth. They should be sharp enough and held together by a strong spring to ensure good electrical contact. Choose crocodile models whose wires are securely crimped, or better soldered. This also contributes to good contact and reliability of the fixture.

Don't buy cheap Chinese wires. They can only do harm. There were cases when in the process of "lighting" such wires overheated, their insulation melted or smoked. Not only is it impossible to start the engine with their help, but they also pose a potential hazard. Therefore, we recommend that you do not save money, but buy high-quality wires for "lighting".

Instead of an afterword

We recommend that you buy and always carry with you wires for "lighting". They can be useful to you in critical situation... Also, always check the battery level, especially when using winter time... As for the direct process of starting the engine from another car, it is simple, and even a novice car enthusiast can do it. The main thing is to follow the necessary rules. And if necessary, give other drivers the opportunity to "light up" from your battery.

Winter brings not only cold and snowdrifts. Motorists know that this time of year brings trials to their vehicle, which can reveal malfunctions, often unexpected ones. As a rule, such breakdowns occur at the most inopportune moment and absolutely unexpectedly - in the evening everything was fine, and in the morning a surprise awaits in the parking lot. What to do if your car refuses to start, and on all visible signs- the battery gave up and could not stand it. How to properly "light" the car you will learn from this article.

Reasons for discharging the battery

There are not so many of them. It is known that frost intensifies at night, sometimes very significantly. The density of the electrolyte changes, and along with it, its characteristics change. If the battery is of average quality or has been in operation for several years, the inevitable will happen - the battery charge may not be enough to start the car. Along with this, strong oxidation can occur at the terminals or at the point where the wires are connected to the starter.

Moreover, even new battery in frost can be completely discharged. The main reason is forgotten sources of consumption. These are non-switched off dimensions, heated seats, a radio tape recorder (often left on in the background), charging a phone, etc. In addition, a working alarm, especially with feedback, under extreme loads, and strong temperature changes are such, is able to bring the battery to a state of almost complete discharge.

In such a situation, there is no other option but to light a car from another car. Of course, if you don't have a spare at home.

If no one is around

If this problem meets you in a city where there are many people and cars, there is a chance to quickly resolve this issue, practically without disrupting the upcoming plans. Another thing is if your car is the only one for the next few kilometers. Then you have to think not about how to light the car, but about how to reanimate your battery. There are options, and there are several of them.

If you have mechanical box gears, and the battery shows weak signs of life, that is, the ability to start the engine from the "pusher" - the main thing is that there are people ready to help push the car. This option itself cannot be implemented.

Start-charging installation

The starting-charger in this situation is a life-saving device that will help to start the car quickly. To do this, you need to have an extension cord of sufficient length so that the terminals of the device can reach the battery terminals. Then there are template actions that are not difficult and are described in the annotation to the device. In any case, in a very short time, you can start your trip.

We warm up the battery

But not all are so prudent, and such a device may not be at hand. Then your next steps will be to check the battery terminals and terminal blocks for oxidation - you just need to clean them work surface from an oxidized surface. This may be the reason that the starter does not have enough energy to spin the engine before starting it.

If this does not help, turn on the ignition, dimensions, near, and then high beam... We give the load no more than a minute, then a break for a few minutes. Then we repeat the procedure. The load is capable of heating the electrolyte, which will increase the density and increase its performance. And you may be lucky enough to start your car.

The most correct decision, if your battery is old or it is very cold, is to remove the battery from the car and bring it into the heat. In this case, you will not have to puzzle over how to reanimate the battery.

Another battery

It may happen that you have a different battery, but it is of a different type and it will not fit in the regular place of your car. This requires special wires with clamps. In this case, it is very important to know how to properly light the car from the battery.

Mistakes in this procedure can result in equipment failure in your vehicle or fire in the wiring. Remember the following order of your actions:

Disconnect all the load in the car (heating and blowing glass, tape recorder, side lights, etc.).
Connect the positive terminal of your battery to the positive terminal of the donor battery with one wire.
Connect the negative terminal of the auxiliary battery to the ground of your vehicle, connecting the connector as close as possible to the starter motor, making sure that the connection and wire does not come into contact with moving parts of the engine.
Start your car.
Disconnect the negative wire from your vehicle.
Remove the positive clip from your battery terminal.

Knowing how to light a car from another battery, observing simple rules safety, you will easily get out of a difficult situation.

Help from other road users

In this situation, you need to know how to properly light a car from another car. You cannot do without special thick wires with clips. They are always on sale in the car market. Their presence in the car, especially in winter, is extremely important.

Consider a visual example of how to light a car. The wiring diagram clearly demonstrates the process.

According to this figure, the connection will allow you to start the car safely. The order of your actions is as follows:

Adjust the support vehicle so that the wires are long enough to connect the battery terminals.
Switch off the vehicle and switch off all energy consumers on both vehicles.
Remove the negative terminal on your vehicle. This will protect against a possible short circuit and will not completely discharge the battery of the vehicle that saves you.
Connect the wires according to the diagram shown. A car with a discharged battery is shown on the right. Be sure to check the removal of the negative terminal (2) from the dead battery and the connection (6) as close as possible to the starter and in no case to the negative terminal of the battery.
Start a work car. Let him work for idle up to 20 minutes.
Stop the car and try to start yours. This is the main condition for how to properly light a car, protecting both cars from damage.
If it does not help, repeat the charge for another 10 minutes. If started, disconnect the wires: first negative, and then positive. In the latter case, first remove the clip from the discharged battery.

By observing these conditions, you can start your car quickly and safely with a discharged battery. Now you know how to light a car without any harm to yourself and the one who dared to help you.

Winter came to us imperceptibly, and with it and very coldy... Not only people, but also cars were not ready for this. And if it is enough for a person to get a winter jacket from the pantry, then with a car everything is much more complicated. In the morning, most of them simply refuse to start. There are a lot of reasons for this, but the solution that most often helps is one - "lighting" from another car. However, not everyone knowshow to properly light a cigarette from another car, so let's take a closer look at this process.

Reasons for a bad start

Poor starting of the car engine in cold weather may be a sign of some kind of malfunction. The most common ones:

The battery on the car has run out. Causemost often in this, since there is not enough charge to start the motor. To solve this problem, you need to charge the battery. In most cases, this helps;
Defective car battery... If recharging does not help, then the battery has become unusable and needs to be replaced. It's better not to delay with this. Also, a signal about this will be ifcar battery drains quickly.

There are many more reasons, but only these can be solved by "lighting".

Even if you know the whole process and follow the instructions, nothing will work without the right wires. Their role is very important. What are neededbattery charging wires?

Initially, you need to understand what is their role in this matter. They must transfer charge from one battery to another with minimal losses. This can only be ensured by wires with a large cross-section.

If it is small, then progress will be minimal, or there will be no progress at all. Clamps also play a significant role, they are popularly called (crocodiles).

They must be of high quality and fit well on the terminals. The loss of voltage is also worth knowing. With a length of 1.5 m, it should not be more than 1.2 V.

You also need to know the cross section. For copper wires, 16 square millimeters are optimal. You can choose more, but less is not recommended.

It is not advised to choose aluminum wires, since from high voltage they can begin to melt and damage the outer shell, which will lead to a short circuit when in contact with the body. The conductivity of such wires is much lower than that of copper.

Let's fix the information on how to properly light a cigarette.The right wire for lightingmust be made of copper with a cross section of at least 16 square millimeters. Also, the clamps should be soldered to its ends, and not just crimped.

How to properly light the battery

Initially, it is worth noting that you cannot light a car if there is a smell of gasoline in the engine compartment. Also, if after several attempts the car still does not start, then you should not try again - it will not help, and the second battery may also be discharged.

For such recharging the car from the batteryit is recommended to choose a car with approximately the same engine displacement.

The whole process:

Fit a car with a charged battery to a car with a discharged battery so that the length of the wires is sufficient;
Stop the engine and turn off all electrical appliances;
Next, you need to take the wires and connect the positive terminals. First you need to connect to a charged battery, and then to a discharged one.The main thing is to observe the polarity, which is most often indicated;
Next, you need to take a black "negative" conductor and fix it on the battery of the donor machine, and hook the second edge of the wire to the metal part of the motor (it is advisable to use a place in the immediate vicinity of the generator or starter). Many people connect this wire to the negative terminal, but we do not recommend doing this;
Now you need to start starting the car with a discharged battery. If after several attempts nothing happened, then you should not continue. In order for the donor car not to be discharged, it must be started for a short period of time. In this periodrecharge the battery a little;
At this stage, you must again try to start the engine with a discharged battery. If everything is done according to the instructions, then it should definitely work out;
The last step is to disconnect everything.We remove the wires in next order : first remove from the negative terminal and then from the positive terminal.

If the car still does not start, then at the "donor" it is necessary to start the engine again for a short time, so that the battery is charged. After that, everything can be repeated. If after several attempts there is no result, then most likely the battery is out of order and the best option will - change it.

A car with a working battery may not always be in the vicinity. Therefore, currentlyuse of a special launcheris gaining immense popularity. It is a small portable battery with enough power to start the motor.