The vehicle's electrical network is powered by two sources - the battery and the generator. The first activates the starter, the second supplies voltage only after the engine is started. Like any part, the battery requires replacement over time.
First of all, the ability to start the engine in cold weather depends on the condition of the battery. Therefore, the question “Which battery is best for a VAZ 2107 car?” All owners of the “Seven” ask from time to time.
Battery for VAZ 2107
On the VAZ 2107, the on-board power supply comes from the battery and generator. The battery is the source of energy when the engine is turned off, and the generator starts working after starting the power unit. The battery loses its function over time, causing it to be unable to crank the starter and start the engine. In addition to the fact that the battery requires replacement, you need to know with what parameters and how to install the battery on your “seven”.
What is it used for?
The main purpose of the battery is to power the starter to crank the engine and supply voltage to the ignition system to start the engine. Until the engine starts, the battery provides power to all consumers of the car (lighting, heater, car radio, etc.). In addition, if during engine operation a large load is placed on the on-board network and the generator is not able to produce the required current, replenishment is also carried out from the battery.
Battery parameters for VAZ 2107
Since the battery life is 5–7 years, sooner or later you have to face the need to select and replace a part. First of all, you need to know the parameters of the battery that the Zhiguli of the seventh model is equipped with, since the first power source that comes across cannot be installed on the car. According to GOST, the VAZ 2107 must be equipped with a battery marked 6 st-55. By deciphering the designation, you can determine that the number of cans is 6, ST is the starter battery, 55 is the capacity in Ah. However, on modern batteries such markings are almost never used.
The battery for the VAZ 2107 is marked 6ST-55: 6 cans, ST - starter battery, 55 - capacity in A*h
In addition, it is worth considering the size of the battery so that the part can easily fall into place. With large sizes, it will not be possible to securely fix the battery. The standard battery size for a VAZ 2107 is 242*175*190 mm. Most of the batteries with a capacity of 50–60 Ah that are on the market fit these dimensions.
Which to choose
When purchasing a battery, pay attention to the characteristics and manufacturer of the battery.
By parameters
The main parameters for choosing a power source for the VAZ 2107 and any other car are the following:
- type;
- capacity;
- starting current;
- polarity;
- overall parameters;
- price category.
Let’s look at each point in more detail to understand the fundamental difference between rechargeable batteries.
The classification of batteries by type indicates that such elements are serviceable and maintenance-free. The first type has special plugs at the top of the battery, which allow you to open each can and check the level and density of the electrolyte. If the need arises, the liquid level can be adjusted to the required value. This design allows you to extend the life of the part, since it can be serviced. However, on the other hand, this is another element that needs to be paid attention to. Maintenance-free batteries, as their name suggests, do not require attention from the car owner. The only thing they need is periodic recharging. Which option to choose for the “seven” depends only on the personal preferences of the car owner.
One of the main parameters of any battery is its capacity, measured in Amp-hours. On the VAZ 2107, power supplies with a capacity of 50–60 Ah will work equally well. If we consider that today a lot of additional equipment is installed on a car (car radio, subwoofer, fog lights, etc.), then additional battery capacity will not be superfluous. It is also worth considering the fact that carburetor “sevens” require a battery with a larger capacity than injection engines. This is due to the fact that an injection engine starts more easily compared to a carburetor unit.
One of the main battery parameters is capacity and starting current.
As for the starting current, this parameter indicates the power of the battery, i.e. how much current the battery is capable of delivering in a short period of time. The starting current determines the ability of the battery to start the power unit under unfavorable conditions, such as low temperature. This suggests that when choosing a battery for a VAZ 2107, you should take into account the region in which the car is used: for the south you can purchase a 50 A*h battery, for the northern regions - with a high starting current.
A parameter such as polarity indicates the location of the battery contacts for connecting the terminals. Today, power supplies for cars are produced in direct and reverse polarity. At first glance, this parameter is not so important, but if it is neglected, then some nuances may arise when connecting, such as insufficient wire length. The VAZ 2107 is equipped with batteries with straight polarity. Determining it is quite simple: if you turn the battery towards you, the positive terminal should be located on the left, the negative terminal on the right.
Batteries with straight polarity are installed on the VAZ 2107
By manufacturer
The choice of energy source for the VAZ 2107 by manufacturer is limited only by the financial capabilities of the owner. If there are no difficulties with funds, then preference should be given to well-established brands such as Bosh, Mutlu, Varta, etc. Such batteries are not cheap, but you can be sure of the quality of the product and compliance with the stated characteristics.
If you are purchasing an inexpensive battery, then you should not buy the cheapest one from an unknown manufacturer. After all, no one will give a guarantee for such a product.
Video: tips for choosing a battery
Types
As for the type of battery, according to this parameter, batteries can be divided into:
- Serviced;
- Maintenance free;
Serviceable batteries are equipped with special plugs on the top cover.
In such a battery, it is possible to open each of the cans, check the electrolyte level and, if necessary, replenish it and bring the density to the required level. On the one hand, this is a positive quality, since periodic maintenance allows you to extend the service life. But on the other hand, such a battery is another element that requires attention.
In maintenance-free batteries, the case is sealed and they do not require any intervention from the driver, the only thing is that you will have to periodically recharge it.
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.
When connecting the battery, first connect the “+” and then the “-” terminal - Using a socket wrench, tighten the nut that holds the bar at the bottom of the battery.
The VAZ 2107 battery is installed on a platform in the engine compartment and secured with a nut and a special strip
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.
One of the reasons for undercharging is poor contact on the relay regulator
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.
The battery charging lamp is a charge indicator that should go out when the engine starts.
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.
Video: measuring battery leakage current
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.
Mounting the battery VAZ 2107
The VAZ 2107 power supply is installed in the engine compartment on the right side on a special platform and is secured using a strip. This way the battery is fixed, which prevents it from moving around the site while the car is moving.
How to prevent theft
Owners of Zhiguli cars often face the problem of battery theft, which is due to the considerable cost of this part. The fact is that opening the hood of a “classic”, especially for an experienced attacker, is not particularly difficult. How to protect yourself and your car from such a situation? There are several options to solve the problem:
- parking the car in a guarded parking lot;
- storing a car in a garage;
- alarm installation (depending on the connection diagram).
However, the methods listed are not always suitable for everyone. In this case, to protect the battery from theft, you can resort to additional security measures:
- install the lock on the hood;
- take the battery with you at all times;
- securely fasten the battery.
One of the options for protecting the battery from theft is installing a lock on the hood
Not every car owner will agree to resort to the first option, since this will require welding brackets for a padlock onto the hood, which will ruin the appearance of the car. Not everyone will like to carry the battery with them all the time. There remains an option for a more reliable battery mount. One of the options for protecting a power supply from theft is to use fasteners with a secret, which will force the attacker to spend more time, and sometimes even retreat from their plans. The option of soldering the fastener is also possible, but it should be borne in mind that this method will create serious problems for the car owner in conditions of force majeure.
You can protect the battery from theft using special fasteners - a nut with a secret
Some car enthusiasts modify the platform for the battery, making it in the form of a box and installing a lock, for which you will need to use a welding machine. There is another way to complicate the theft of a part - strengthening it with a chain and installing a padlock. It is important to understand that the most effective protection is a set of measures that will prevent the theft of the battery from the car.
To protect the battery, you can make special fasteners that allow you to install a padlock
Dimensions
Let's move on to the overall parameters, since they also need to be taken into account. In the engine compartment there is a special area with fasteners for installing the battery. If you choose the wrong battery size, it may simply not fit on this site, which is why the reliability of its fastening will be in question. The required dimensions of the VAZ-2107 battery are as follows: length - 242 mm, width - 175 mm, height - 190 mm. Let us immediately note that most batteries with a capacity of up to 60 Ah have exactly these dimensions.
So, we have determined that for the VAZ-2107, a battery with a capacity of 50-60 Ah, with direct polarity, will be optimal. As for starting currents, we focus on the weather conditions of the region in which the car is used.
As for price categories, it all depends on how much you can spend on the battery. If finances allow, then it is better to take batteries from well-known manufacturers (BOSH, Mutlu, etc.), although they are more expensive. But there will be confidence that the battery characteristics correspond to the declared ones. You can, of course, buy a battery from a little-known manufacturer, but no one will guarantee the quality and compliance of the characteristics.
VAZ 2107 battery charging diagram
One of the main electrical circuits of a car is the battery charging circuit. As the owner of a VAZ 2107, you need to have at least a minimal understanding of the principle of charging the power source, what elements are involved in this circuit, which will allow you to take appropriate actions in the event of problems.
Battery charging diagram for VAZ 2107: 1 - battery; 2 - generator; 3 — mounting block; 4 — ignition switch; 5 - voltmeter; 6 - battery charge indicator lamp
The above diagram makes it clear that a malfunction in the battery charging circuit is possible anywhere. This could be, for example, problems with the brushes of the relay regulator or oxidized contact on any part of the electrical circuit. As a result, the generator will not be able to provide a full charge to the battery, which will lead to its gradual discharge.
When choosing a battery for a VAZ 2107, you must adhere to the recommended parameters. This will ensure trouble-free installation and operation of the product for a long time. If you have problems charging the battery, after reading the diagram, you can independently find and fix the problem.
Options
The most important property of a battery is its capacity. It must fully correspond to the engine model and the number of electrical appliances. This indicator is measured in Ah (ampere x hour). This figure shows the maximum battery capacity. You also need to consider “reserve capacity.” This indicator indicates the duration of offline operation with a faulty generator. A battery with a capacity of 55 Ah usually has a reserve capacity of about 70-90 minutes. But, this figure can decrease significantly, depending on the number and power of electrical appliances.
Supply system
. This indicator is not very significant, but still affects the choice of battery. This is caused, first of all, by the peculiarities of engine starting. With carburetors, engine starting is more energy-intensive. In this regard, it is recommended to select batteries 5-10 Ah more. There is also a relationship with displacement. Pay attention to this nuance when choosing.
Serviceable or unserviceable battery
Now you can find 2 different types of batteries on the market:
- Maintenance-free
are modern batteries that do not require topping up water or electrolyte during operation; - Serviceable
– can be additionally refilled with water or electrolyte if necessary.
It seems most optimal to use serviceable batteries on the VAZ 2107. They withstand operation on older machines with unstable electrical systems much better.
Conclusion
.Every few years the car battery needs to be replaced. Otherwise, you simply will not be able to start the car. At the same time, the question often arises of which battery is best for the VAZ 2107 car. After all, there are now quite a lot of different options in stores, which makes the choice much more difficult.
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