A battery is a kind of “consumable” for a car, but a number of requirements and criteria are put forward for it. In order for the choice of battery to be successful, it is necessary to correctly determine the size, capacity, and design features. And if answers to technical questions are easy to find, then the real capabilities of the model can only be learned through experience, after purchase. When compiling a rating of the best batteries for VAZ, our editors conducted their own research and selected the ten most successful batteries. Participants in the review are suitable for both domestic and foreign cars. For example, batteries for the VAZ 2110 will fit perfectly on the Ukrainian analogue of the 10th Bogdan family and will last for a long time.
Which battery to buy for VAZ 2107
A car battery that has expired requires replacement, and the owner is faced with the question of which battery to buy for the VAZ 2107.
| The engine compartment of a VAZ 2107 with an installed battery (upper right corner). |
Today, solving this dilemma is not easy, since there are a huge number of them on sale from a variety of manufacturers.
A car battery is essentially one of the most critical elements of a car, since if it fails, starting and operating the car becomes very problematic. Therefore, when purchasing a battery, you need to approach it carefully, having first considered all its strengths and weaknesses.
A car battery performs several functions:
- Starts the engine
- Provides power to the vehicle's electrical equipment when the engine is not running: parking and side lights, interior lighting, car radio, alarm and other consumers
- If the generator fails, it ensures further movement, provided it is charged
To carry out all of the above functions, a car battery must have certain properties that meet the specified parameters of a particular car model.
How to secure the battery so it doesn't get stolen
There are several effective and, at the same time, simple ways to secure the battery so that it does not get stolen:
- An effective barrier to theft will be to make it more difficult to install the battery itself. Some of the methods are done by hand. Replacing regular battery nuts with the same ones with a secret is the simplest way to protect the battery from thieves. It will force attackers to tinker and sometimes retreat.
- You can do another manipulation with the same fasteners. Place two nuts with a locknut instead of the one that clamps the batteries. Remove from the first faces. Tighten them using a gas wrench. Dealing with this design will be very difficult and time-consuming.
- Non-standard fastening will create additional problems for thieves. It could be a rubber band from the expansion tank. A battery fixing structure similar to the image below will be more complex and reliable. To prevent the battery from being stolen, instead of the top beam there is a block with holes for pins and nuts as in the second picture. The latter should only be unscrewed with a socket wrench and should be inaccessible to pliers.
what is the polarity of the battery?
| One of the most optimal batteries for the VAZ 2107 car, with a capacity of 60 Ah. |
The higher the battery capacity, the greater its power. In addition, in modern models a lot of additional equipment is installed as options, which immediately increases the load on the battery, which also must be taken into account when purchasing it.
In general, capacity is characterized by the amount of electricity that the battery is capable of delivering in long-term discharge mode. Typically, the capacity is determined at a 20-hour discharge. When determining the nominal capacity, the battery is discharged continuously (at +25°C) for 20 hours with a current equal to 0.05% of the total battery capacity. Let's say, for a 60Ah battery the discharge current will be 3A, and for a 90Ah battery – 4.5A.
There is also such a thing as reserve capacity, which is measured in minutes and should approximately correspond to the driving time of the car in the event of a generator failure. For example, for a 55Ah battery, the reserve capacity will be approximately 85-90 minutes. What does it mean that the car moves thanks to the energy of the battery (fully charged at the time of generator failure) for 1.5 hours.
What to do if the battery is dead
If charging does not occur, the lights are dim, or do not light at all when the generator is turned off, urgent action must be taken. The following methods can be used:
- use a starter-charger - but not all drivers have this;
- contact other vehicle owners - connect your car to the battery;
- try to start the engine “from the pusher” - in this case the generator shaft will be spun up by the cranking engine.
It is important to remember: the battery has its own resource. It depends on the parameters of the device itself, as well as the operating mode. But it is worth noting that if the battery has stopped charging, then it will most likely be simply impossible to restore its operation. It is best to purchase a new battery from a reputable auto store.
Carburetor or injector
In addition, the type of engine is also taken into account. So, for carburetor and injection engines or diesel engines, certain batteries are selected, the characteristics of which have some differences from each other. This must be taken into account when deciding which battery to buy for a VAZ 2107.
So the larger the engine displacement, the more powerful the battery should be selected. Also, when purchasing a battery, you need to take into account that for a carburetor engine the battery must have a larger capacity, about 5-10 Ah, than the battery for a VAZ 2107 injector.
Examples of choosing batteries for the VAZ 2107
- Starting capacity The starter at the braking torque during startup consumes a current of about 350-400 A, then a normal engine start when the starter is running for 10 seconds takes about 400A*10s = 1.1Ah, which is equal to 2% of the capacity of a standard 60Ah battery.
- Starting current (starting current) The second important parameter of the battery is the starting or starting current, the value of which determines how long the battery can “crank” the engine when starting, which is especially important at low temperatures in winter. When purchasing, you should always give preference to the battery model where the starting current value is higher. However, it is worth taking into account the fact that at the same time the load and the starter brush-commutator assembly will increase, which will reduce its service life.
- Battery polarity When purchasing a battery for a VAZ 2107 injector, you need to take into account the position of the plus and minus terminals, for example, “plus” on the right or left .
- Overall dimensions of the battery You must immediately check the dimensions of the battery in the accompanying documents or measure the dimensions of the “native” one that is on the car yourself.
Also read other reviews
Battery for VAZ 2107. We choose for every taste and color! Author: Welcome to the website of the Electromotor company. My name is Anna, and today we will talk about how to choose a battery for a VAZ 2107. If you need a rechargeable battery and you have come to our website, then the direction has been chosen correctly, which is already good.
I'll try to help you. You need to start by determining the most important parameter - battery capacity. The capacity is indicated in Ampere/hours and you can find out this indicator by carefully reading the passport for the machine, where all the recommended parameters are indicated. If you cannot do this, then it will be most convenient to inspect the old battery.
Starting current
When determining this parameter, you need to take into account the region in which the car is constantly used. For example, if the car is used on a regular basis throughout the year in sub-zero temperatures, then you should opt for a more powerful battery. The lower the air temperature at which the engine starts, the more power is required.
The starting current value is indicated
The optimal solution would be a parameter of 600 A. For the southern regions, a value of 550 A is more suitable. There is a proportional dependence of the ability to start the engine on the ambient temperature.
Determining the polarity of the battery
The next indicator is polarity. Polarity can be direct or reverse.
This is reflected on the battery by the location of the terminals: Left (L) + left plus, Right (R) + right plus. The starting current usually depends on the battery capacity. Often, these two indicators are proportional: the larger the capacitance, the greater the inrush current, although there are exceptions. Next we decide on the sizes. It is best to take approximate measurements yourself, then the picture of battery selection will be clearer, since based on approximate parameters we will be able to select a standard type for you. Selecting a battery for a VAZ 2107 is not such a difficult task.
I can outline some standard parameters that are suitable for this type of machine. Suitable battery models for VAZ 2107: The Electromotor company can offer you a wide range of batteries for any car, for every taste and color. Our company offers to purchase batteries of both Ukrainian and foreign production.
Among domestic manufacturers, these are Dnipropetrovsk: ISTA and WESTA. Among the foreign ones are: VARTA P and BOCSH, which are produced at the best European factories. It cannot be said that some batteries are worse and some are better. All presented batteries are of very good quality. Indeed, the price of Ukrainian batteries is lower, but only due to the territorial factor, since transporting batteries from Europe is much more expensive.
The Electromotor company wants and can offer you a battery for the VAZ 2107 at the lowest prices. And this does not mean that we sell cheap copies; all batteries have official warranty cards and all production details are stamped on each one. Contact us by phone: (044) 5 000 888, and we will help you choose a battery for your VAZ 2107. We will be glad to hear from you! Good luck and see you soon!
- which battery to choose for vaz 2110
- which battery is better to buy for vaz 2110
- rating of car batteries 2013
- how to connect a generator from a VAZ 2107 to a VAZ 2106 photo
- The car battery does not charge from the VAZ 2107 generator
Suitable batteries for LADA Granta: original and analogues
In the catalog of original LADA spare parts, starter batteries for Granta are indicated by the following codes:
- 55 Ah: 21 080-3703010-05, 8450001325;
- 64 Ah: 21 902-3703010-10, 8450003761.
Suitable substitutes are given in the table.
For 8 valve internal combustion engines
| Name | Capacity, A | Cold start current (EN), A | Dimensions (L*W*H), mm | Average price, rub. |
| Russian Star 60L | 60 | 430 | 242x175x190 | 2800 |
| RUSBAT 60L | 60 | 480 | 242x175x190 | 3400 |
| AutoFan 60L | 60 | 470 | 242x175x190 | 3400 |
| BEAST 55L | 55 | 530 | 242x175x190 | 4150 |
| AKOM 55L | 55 | 460 | 242x175x190 | 4200 |
| VARTA STANDARD L2R-2 (60L) | 60 | 520 | 242x175x190 | 4200 |
| BLIZZARO TRENDLINE 60RL | 60 | 540 | 242x175x190 | 4500 |
| MUTLU Mega Calcium 60L | 60 | 540 | 246x175x190 | 4500 |
| INCI AKU Formula A 60L | 60 | 530 | 242x175x190 | 5250 |
| VARTA Blue D43 (60L) | 60 | 540 | 242x175x190 | 5450 |
| BOSCH S4 006 (60L) | 60 | 540 | 242x175x190 | 5750 |
| DELKOR 60L (56031) | 60 | 525 | 241x174x188 | 6500 |
For 16 valve internal combustion engines
| Name | Capacity, A | Cold start current (EN), A | Dimensions (L*W*H), mm | Average price, rub. |
| AKOM 65L | 65 | 580 | 242x175x190 | 4800 |
| UNICORN GOLD 66L | 66 | 760 | 242x175x190 | 5450 |
| AKOM EFB 65L | 65 | 650 | 242x175x190 | 5800 |
| FORSE 65L | 65 | 660 | 242x175x190 | 6100 |
| INCI AKU Maxim A 65L | 65 | 640 | 242x175x190 | 6200 |
| TAB POLAR 66L | 66 | 620 | 242x175x190 | 6450 |
| BOST PREMIUM 65L (56514) | 65 | 650 | 242x175x190 | 6500 |
| DELKOR 65L (56514) | 65 | 640 | 241x174x188 | 7250 |
Which battery is better: original or replacement? It is preferable to install analogues that are suitable in terms of parameters: they cost less, and their service life directly depends on the price. If it approximately matches the original, then it will last as long as the original spare part.
Which battery to buy for VAZ 2107
A car battery that has expired requires replacement, and the owner is faced with the question of which battery to buy for the VAZ 2107.
| The engine compartment of a VAZ 2107 with an installed battery (upper right corner). |
Today, solving this dilemma is not easy, since there are a huge number of them on sale from a variety of manufacturers.
A car battery is essentially one of the most critical elements of a car, since if it fails, starting and operating the car becomes very problematic. Therefore, when purchasing a battery, you need to approach it carefully, having first considered all its strengths and weaknesses.
A car battery performs several functions:
To carry out all of the above functions, a car battery must have certain properties that meet the specified parameters of a particular car model.
Problems under the hood
Before buying a battery, we advise you to make sure there are no other reasons for its poor performance under the hood.
To ensure that the driver is always aware of the condition of his battery, there is a charging sensor (voltmeter) and a warning lamp on the dashboard of the VAZ 2107. According to the rules, when igniting, the lamp always lights up, and the sensor raises the arrow to the white indicator. When the engine starts running, the light should go out and the sensor should move the arrow to the green indicator.
Dashboard diagram showing the location of the voltmeter:
- voltmeter;
- speedometer;
- odometer;
- tachometer;
- coolant temperature gauge;
- econometrician;
- control lamp block.
If the car does not start and the red light is on, this indicates that there is simply no battery charge to start the engine.
The scheme of action is such that the first step is to check the state of the relay regulator built into the VAZ 2107 generator. This sensor should monitor the battery voltage, that is, lower or increase it if necessary. Usually the malfunction of this part is the main cause of such problems. In addition, check the wear of the brushes connected to the relay. Remove them from the generator and check their mobility with a simple hand pressure.
Now, using a voltmeter, you need to find out if there are voltage failures on the battery. If it approaches the number 14, then the relay, without a doubt, needs to be replaced, and this is what the lamp was telling you.
Find a round part with a yellow wire on the back cover of the generator (this is the relay) and you can begin dismantling.
The sensor is attached to the generator using two bolts. We unscrew them and disconnect the negative terminal from the battery. Thus, you can freely remove the relay and install a new one in the reverse order.
The new relay can also be tested (diagram below). We connect a multimeter to its brushes, and to its terminals, for example, a car battery. If the relay is operating correctly, you will see numbers on the multimeter display - voltage indicators.
- multimeter;
- control lamp;
- "ground" of the voltage regulator;
- voltage regulator output;
- brushes.
If after these steps the engine was able to start and the lamp no longer lights up, this means that the cause of the malfunction has been successfully eliminated.
Battery parameters
The main property of a battery is its capacity. The battery capacity is measured in Ah (amp hours) and must correspond to the engine size for a given car model and provide power to all electrical equipment, depending on the specific configuration.
| One of the most optimal batteries for the VAZ 2107 car, with a capacity of 60 Ah. |
The higher the battery capacity, the greater its power. In addition, in modern models a lot of additional equipment is installed as options, which immediately increases the load on the battery, which also must be taken into account when purchasing it.
In general, capacity is characterized by the amount of electricity that the battery is capable of delivering in long-term discharge mode. Typically, the capacity is determined at a 20-hour discharge. When determining the nominal capacity, the battery is discharged continuously (at +25°C) for 20 hours with a current equal to 0.05% of the total battery capacity.
Carburetor or injector
In addition, the type of engine is also taken into account. So, for carburetor and injection engines or diesel engines, certain batteries are selected, the characteristics of which have some differences from each other. This must be taken into account when deciding which battery to buy for a VAZ 2107.
So the larger the engine displacement, the more powerful the battery should be selected. Also, when purchasing a battery, you need to take into account that for a carburetor engine the battery must have a larger capacity, about 5-10 Ah, than the battery for a VAZ 2107 injector.
Examples of choosing batteries for the VAZ 2107
- Starting capacity The starter at the braking torque during startup consumes a current of about 350-400 A, then a normal engine start when the starter is running for 10 seconds takes about 400A*10s = 1.1Ah, which is equal to 2% of the capacity of a standard 60Ah battery.
- Starting current (starting current) The second important parameter of the battery is the starting or starting current, the value of which determines how long the battery can “crank” the engine when starting, which is especially important at low temperatures in winter. When purchasing, you should always give preference to the battery model where the starting current value is higher. However, it is worth taking into account the fact that at the same time the load and the starter brush-commutator assembly will increase, which will reduce its service life.
- Battery polarity When purchasing a battery for a VAZ 2107 injector, you need to take into account the position of the plus and minus terminals, for example, “plus” on the right or left .
- Overall dimensions of the battery You must immediately check the dimensions of the battery in the accompanying documents or measure the dimensions of the “native” one that is on the car yourself.
Transferring the battery to the trunk
On the VAZ 2107, the power supply is normally located under the hood. Some owners of “Sevens” and other “classics” transfer the battery to the trunk, explaining this with the following advantages:
- more space under the hood, which is important when planning car tuning;
- the location of the battery in the trunk prevents it from severe freezing at sub-zero temperatures, which will ensure easier engine starting in winter;
- Battery protection against theft.
Regardless of your goals, you need to take into account that getting the battery out if the trunk is fully loaded will not be easy. In addition, harmful fumes are released from the energy source. To carry and securely secure the product in the luggage compartment of the “seven” you will need:
- platform for the battery;
- terminals for battery contacts;
- tips for mounting the mass;
- battery fastening;
- cable with a cross section of 25 mm² and a length of 6 m.
Photo gallery: consumables for transferring the battery to the trunk
The procedure for transferring and installing the battery in the trunk boils down to the following steps:
- We drill holes for the battery platform in the trunk.
- We lay the cable from the luggage compartment to the engine compartment through the passenger compartment (the length should be enough to reach the solenoid relay on the starter).
- We press the tip onto the wire and screw it to the relay.
Which battery is better for a VAZ 2107 car? Combat classic
Although the readings will indicate a high state of charge, the actual battery capacity has decreased. The battery will still serve in warm temperatures, but in frosty weather there will be problems.
The battery determines how quickly the car will start and how electrical appliances will operate when the engine is not running. Therefore, it is important to choose the right device. The article discusses the battery for the VAZ 2107 car: what parameters should be taken into account when choosing, what are the main faults.
Common faults
Battery life is 5-7 years. During operation, malfunctions are possible; they are detected by the sensor. If problems arise with the battery, then thanks to the sensor this situation is reflected on the dashboard: the battery charge arrow begins to twitch, and a light may come on.
Charging arrow on the seven
During operation, the following device malfunctions are possible:
- There may be a faulty starter or alternator. If the starter malfunctions, an additional load is placed on the battery, since more electricity is required when starting the engine, so the VAZ 2107 may not be charged enough. If the generator does not work, the battery does not receive recharging, but only consumes electricity.
- Mechanical damage causes the device to leak. They are detected by visual inspection.
- If the battery discharges quickly after recharging and the battery lamp may come on, the charging pattern may be disrupted. It is possible that the charging current parameters were incorrectly set or the charging time was insufficient and the battery did not have time to fully recover.
- If the battery is very discharged, the car arrow starts to jerk, the battery light comes on, this means that the device needs to be recharged.
It is better to purchase a new product in a specialized store of trusted manufacturers. During operation, you should monitor the charging, which is reflected using the appropriate sensor. If the charging light on the dashboard lights up, the arrow twitches, the battery needs to be recharged.
If you charge your VAZ 2107 battery on time, then it will last longer. It is also necessary to perform maintenance at least once a year.
Options
In order to choose the right battery for a VAZ car, including UAZ, you need to know what functions it performs. The main purpose of this device is to start the engine. The second function is to provide power to consumers of the vehicle's electrical network in the event of a generator malfunction or when the engine is not running.
Engine compartment of the seven
The device must be selected in accordance with the needs of the machine's electrical network. The main parameter you need to focus on is capacity. It must correspond to the number of electrical appliances and the engine size of the VAZ 2107.
The second important point to pay attention to is the location of the output terminals. Polarity can be direct or reverse. For batteries with reverse polarity, the plus is on the right, and with direct polarity, it is on the left.
Forward and reverse polarity
The next important parameter is the starting current. The value of this current determines how long the battery can turn the starter, which is especially important when starting the engine at low temperatures in winter.
In addition to the listed parameters, the dimensions of the device are important. In order for the new battery to fit into its regular place without any problems, you need to measure the height, width and length of the old one.
Battery features for different “Seven” models
VAZ 2107 is a sedan with four doors. It began to be produced in 1982 on the basis of the Lada 2105 at the AvtoVAZ plant. The main components and internal structure of the VAZ 2107 have not changed. The “Seven” differs from the VAZ 2105 in its interior trim, plastic bumpers, chrome-plated radiator grille, installation of an oil pressure indicator, tachometer, changing the speedometer to 180 km/h, and the shape of the hood. In 2001, a new model VAZ 2107 - 21074 appeared with a 1.7 liter engine producing 77 hp. With.
The battery capacity depends on the type and size of the engine. Since 1982, the “Seven” has been updated with new types of engines.
Engine volume, cubic meters cm
Manual Transmission
The Semerka car is equipped with a 6ST-55 battery in accordance with the state standard. It is located near the engine, in front of the car on the right. The energy storage device has the following features:
The energy storage device consists of 6 batteries with a voltage of 2 V, which are connected in series. The batteries are placed in isolated parts of the energy storage device filled with electrolyte. The energy storage compartments are equipped with holes and are closed with lids. At the edges of the case there are positive and negative terminals to connect the electrical wiring of the “seven”.
Criterias of choice
There are two types of devices on the automotive market: serviced and unattended. Serviced models require regular addition of distilled water or electrolyte. Professionals recommend using serviceable devices on VAZ 2107 cars, since they are more suitable for use on older car models with an unstable electrical system (the author of the video is the Electromotor Company).
When choosing a battery for a VAZ 2107, you should consider the following factors:
- The capacity can vary from 45 A/h to 65 A/h. For winter, when a large starting current is needed, products with a capacity of 55-65 A/h are purchased.
- The battery for VAZ 21074 has a positive terminal on the left, so the polarity must be straight.
- Dimensions of the VAZ 21074 injector battery: 242x175x190.
- When choosing a battery, you should take into account the engine model. For the VAZ 2107 injector and carburetor it has some differences.
When purchasing a new product, you must check its functionality and inspect it for mechanical damage.
Self-replacement of the battery: removal and installation
Required tool: 10 and 13 mm spanners.
The procedure is as follows:
- Secure the machine in place with the parking brake.
- Turn off the ignition and open the hood.
- Using a size 10 wrench, loosen the terminal nut on the negative terminal.
- Remove the terminal.
- Pull back the protective cover on the positive terminal.
- Repeat steps 3 and 4 with the terminal on the positive terminal.
- Using a 13mm wrench, unscrew the two nuts of the clamping bar and remove the latter.
- Pull out the battery.
- Install the new part and connect it.
Domestic VAZ-2110 cars are equipped with not very high-quality batteries, which quickly fail. As a result, at first there is a need for frequent recharging, the battery fails more and more often, especially in the cold season, and then requires urgent replacement. Choosing a good battery for the VAZ 2110
necessary taking into account all technical characteristics. They should not differ much from the original battery, since otherwise it will be difficult to predict how long this model will last and what kind of care it will require.
Video “How to choose a battery”
This video explains when and how to choose a battery (the author of the video is NarodTV).
Quite often, owners of “classic” cars are interested in which battery is better for the VAZ-2107 car - an injector or a carburetor. After all, you want to get the maximum effect from a new battery, and the new element should cover all needs without exception.
After the car battery has worked for 2-3 winters, experts recommend replacing it. We will consider further what criteria should be taken into account when choosing, taking into account the advice of professionals in their field.
Battery selection
When choosing a new battery for the VAZ-2107, first of all you should understand its main functions. Since the second name of the battery is “starter battery,” this means that this particular element is responsible for starting the engine of the iron four-wheeled horse. In addition to this function, the battery allows you to power electrical equipment:
- glass wipers Which battery is better to choose for a VAZ-2107 car;
- front and rear lights;
- electric windows and so on.
Moreover, if the car’s generator fails and the battery is completely repaired, then this element will help the owners get the car to the right place. But in order for the battery to cope with its main purpose 100%, when choosing, you should take into account the most basic criteria:
- Polarity of your car. Since in the analyzed “classical” model the “+” terminal is located on the right side, to install a new battery you should use only the option that provides for straight polarity.
- When choosing a battery, you should study in advance the size of the area that the battery occupies. If you choose a smaller model, the element will not be reliably installed, which will negatively affect its functionality.
- The capacity size of the battery used is one of the most important criteria when choosing. For the VAZ-2107, you should use a battery option whose capacity size will exactly correspond to the engine model and the number of electrical appliances provided in the car. The size of the capacity, which is called reserve, must also be taken into account, because this element is responsible for the battery life in the event of a faulty generator, in offline mode.
- What kind of power system is used in the car should also be taken into account when choosing a new battery for the VAZ-2107. The fact is that on different models, manufacturers use different engine starts. For example, engine starting with carburetors is analyzed as more energy-intensive than with an injector. Taking this point into account, experts recommend choosing a battery of the largest possible capacity for the carburetor.
- For the VAZ-2107, experts recommend choosing a battery with an Ah rating of at least 50, so that in the future there will be no problems with the operation of the starter. Home craftsmen often install batteries with an even larger volume, but before doing this they replace the generator. The fact is that for normal operation of a large battery, a powerful generator is required.
- Taking into account the advice of experts, for normal operation of the VAZ-2107 engine, the battery must have a maximum starting current. It is this indicator that is responsible for the duration and reliability of the battery, especially in the winter.
Taking into account the recommendations and advice of experts that we analyzed above, each owner of a VAZ-2107 car will certainly select the most suitable battery option, which will faithfully serve for a long period of operation.
Battery related problems
While operating the Seven, the car owner may encounter problems with the battery. In most cases, they come down to charging problems. The most common reasons for lack of recharging are a broken belt or failure of the generator diode bridge, relay regulator, or battery charge circuit fuse.
How to install correctly on a car
Removal and installation of the power supply on the VAZ 2107 is carried out in most cases when recharging, replacing a part, or carrying out repair work in the engine compartment, if the presence of the battery will interfere. To install the battery you will need keys 10 and 13. When everything you need is at hand, you can begin installation:
- Open the hood and install the battery in the designated place.
- We first connect “+” and then “-” to the battery and tighten the fasteners. It is worth considering that the negative terminal is slightly smaller in diameter than the positive terminal.
What happens if you reverse the polarity?
Although the terminals for connecting the energy source have different diameters, sometimes there are situations when car owners manage to confuse the polarity. If the battery is connected incorrectly on a VAZ 2107, the diode bridge of the generator and the voltage regulator may fail, and some fuses may blow. An incorrect connection cannot be overlooked because it causes smoke and a burning smell. If such a problem occurs, you must immediately disconnect the terminals from the battery to avoid serious consequences.
The battery discharges quickly
One of the problems that manifests itself on the VAZ 2107 and other classic Zhiguli models comes down to the battery being discharged after parking, that is, literally overnight the power source is discharged to such an extent that it is unable to crank the starter. The reason for this phenomenon lies in insufficient battery charge or high leakage current. First you need to check the following:
- integrity of the charge relay fuse;
- reliability of fastening the terminals to the battery;
- the voltage value at the battery and at the generator output;
- condition and tension of the generator belt;
- cleanliness of the voltage regulator terminals and the condition of the brushes.
In addition, you need to pay attention to the charge indicator lamp: it should go out immediately after starting the engine. If the lamp does not go out and the battery is discharged, there may be several reasons:
- malfunction of the relay regulator;
- wear or sticking of brushes in the brush holder;
- failure of one of the diodes in the generator.
On the VAZ 2107, the battery charging circuit is designed in such a way that the charging indicator lamp is located along the generator excitation circuit. When, when starting the engine, the voltage supplied by the generator exceeds the voltage on the battery by 0.1 V, the lamp goes out. However, this does not mean that the required level of charge is supplied to the battery, since even if the light bulb goes out, the power source may be discharged. In this case, it is recommended to check the voltage at the battery terminals with a multimeter.
If the test showed values in the range of 13.7–14.2 V, then there are no problems with the charge. In case of rapid discharge, a possible cause may be a large leakage current.
Battery leakage current is a parameter indicating the self-discharge of the energy source when the vehicle is parked with the engine turned off and consumers turned off. Depending on the strength of the leakage current, not only the battery may discharge, but also the wiring may catch fire.
On a “seven” with a working electrical part, the leakage current should not exceed 0.04 A. With such values, the car should start even after a long period of parking. To measure this parameter, you must disconnect the positive terminal from the battery and connect a multimeter into the open circuit at the current measurement limit, while all consumers must be turned off. If during the test it was revealed that the leakage current is about 0.5 A, then you should look for the cause and eliminate it. In addition, you should not exclude the battery itself from attention - perhaps its service life has come to an end.
