✅ Transferring the battery to the trunk of a VAZ 2107

The design of some cars initially involves placing the battery in the trunk. Many will ask why a battery is needed in the luggage compartment and what is the practical use of it? The benefits and disadvantages of this arrangement will be discussed later, but now we will talk about the procedure for installing the battery in the trunk of the “tens”. By the way, the German manufacturer BMW initially installs the battery in the trunk of its models.

Among domestic cars, the VAZ 2107 is distinguished by this type of battery placement, under the hood of which there are two wires - positive and ground. This was done by the designers specifically to reduce losses during vehicle operation. In other words, two cables are suitable for the “seven” engine. The mass is attached next to the battery to the nearest bolt in the car body. This is done for the purpose of weight distribution of the body, although the bodies of cars of the VAZ family are not so heavily weighted.

Transferring the battery to the trunk of a VAZ 2107

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Re: Moving Akum to the trunk

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Unread message VodolAZ » Fri Apr 10, 2009 11:34:40

What to tear: minus or plus is a question for everyone. Usually there was a minus on old cars, so it’s easier to make it. One of the powerful contacts on the case. If the power contacts of your relay do not “sit” on the body, I would prefer plus. You can connect music, clocks and other equipment (so that the settings are not lost) (through your fuse next to the battery terminal) directly, bypassing the relay. For what? I think it's obvious to everyone. But in general, there is no fundamental difference. As for the powerful relay, I find it difficult to answer. The only thing that comes to mind is the solenoid relay from any starter. Its disadvantages are obvious: - Extra contacts in a powerful circuit - voltage loss of a fraction of a volt during startup - Current consumption (with the ignition on) is not cheap

I suggest another option:

Two wires go from the “+” battery: thick (only to the starter) and thin (the rest of the circuit)

Tear off a thick one and insert a 250. 300 Ampere fuse (tanks have 200 and 400). This will protect the starter circuit. And run the thin one according to the agreed circuit through a regular 70 A relay (and there are such in GAZelles). 70 And that's enough for the eyes. And run another wire to the battery (already told) for consumers who need constant power.

How do you like this option?

Added after 8 minutes 19 seconds:

Expert053i

There is no question here: it is possible or not. Everything is possible! BUT. If we want to leave the characteristics of our started wire in the same form, then in proportion to the length it is necessary to increase the cross-section of the wire. Then his resistance will remain the same.

Standard wire is about 50 cm and 35 sq. mm in cross-section. So? Accordingly, the length to the trunk will increase by about 4 times. That is, you need 140. 150 sq. mm. Or stretch four 35 in parallel. In general, you can experiment in winter. Set up 50 sq. mm wire is long and, when starting it in the cold, measure the voltage drop (i.e., the voltage between the battery terminal and the solenoid relay terminal). It is quite possible that 50 square meters will be enough.

Report: Moving the battery to the trunk

We transfer the battery to the trunk of a Toyota Ipsum body ACM26. Prologue. As a digression, I would like to say that moving the battery to the trunk of a Toyota Ipsum is almost irrelevant, because... There is plenty of space under the hood. But! As a result of tuning or installing an additional battery (together with this device), a situation may arise when there is not enough space under the hood and then the question of freeing up free space will arise. And first of all, you can free it by removing the battery from under the hood. I also encountered a similar problem while working on this project.

For this we will need: socket wrenches 10, 12; insulating tape; knife (will be used for stripping wires); hammer; drill; metal drill 10mm; bolt 1 pc. with nuts 2 pcs. turnkey for 10; bolt 1 pc. with nut 1 pc. turnkey for 12; Battery terminals – 2 pcs.; Terminals for connecting the cable to a bolted connection – 2 pcs.; Cable – 11m, marked 4AWG, cross-section 18mm2;

1. We cut the cable 5.5 meters long and crimp it on one side with terminals for a bolted connection; 2. Lay the cable: to do this, remove the glove compartment on the passenger side, insert the cable with terminals into the engine compartment through the hole for the computer cable (upper); 3. Lay the cable: remove the plastic sill trim on the passenger side; unscrew the lower bolt securing the second row passenger's seat belt, unscrew the bolt in the third row passenger's armrest, unclip the interior trim from the second row to the trunk, cut a hole in the trunk for the cable; 4. Install the battery: bend the edge of the standard battery mount, mark a hole on the plastic panel (there is a free hole on the body behind the panel that you can attach to),

we drill the plastic, install a pin through the plastic, drill another hole in the bottom, fasten a bolt to the bottom (with one nut all the way so that the bolt does not fall when we unscrew the second nut holding the mount), secure the battery;

5. If the wires are the same color, then to determine we do the following: we connect the negative terminal of the laid wire to the battery, which is still under the hood, and check for continuity between the body and the laid wires in the trunk; there is conductivity, which means the minus has been found; 6. Connect “-” under the hood (I screwed it to the standard one on the machine)

and do the same with “+” (in my case - directly to the starter)

7. Connect the terminals in the trunk;

Let's check. I did 2 tests. The first, when the battery was still under the hood: minus as usual, and plus after 11 meters of wire, the temperature on the 12.7V battery is about 0. Result: it starts without problems, at warm-up speed I measure the voltage (on the battery - 14.4V, at the standard terminals in front 11m – 14.5V).

Second, after installation. Voltage 12.4V, temperature 0. Result: it starts, while warming up, 14.4V here and there, during start the voltage dropped to 10.1V.

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.

Transferring the battery to the trunk of a VAZ 2107

You will learn about the topic of transferring the battery into the trunk of a VAZ 2107 - we are waiting for you to come to us, go ahead. Techniques and technologies for car repair in garage conditions. How to repair a car yourself at home. We will help you with repairs and repair the car yourself. We know how to restore a car with minimal investment. I have attached video instructions.

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If we talk about
the standard location of the battery in the luggage compartment , then BMW can be an example. For the "seven" the battery is located in the right niche of the trunk. From there, under the hood, 2 wires are laid through the entire car: positive and ground. This is done to eliminate losses during vehicle operation (starting, charging). That is, there are 2 cables going to the engine, and in addition to this, the “ground” is screwed to the nearest body bolt near the battery. In this case, one of the reasons for placing the battery in the trunk is the weight distribution of the body.

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.

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.

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In the case of a Russian car, there is no need to talk about ideal weight distribution of the body, so when moving the battery into the trunk, other goals are pursued:

More space under the hood. If you decide to do tuning under the hood, then there will be no wasted space.
The battery is inside the car, which prevents it from freezing too much in cold weather, and therefore makes it easier to start the engine in winter.

The disadvantage is the inaccessibility of the battery. For example, the battery is dead and the trunk is full to capacity.

Also, do not forget about harmful fumes. If the battery has liquid electrolyte, then it is covered with a plastic casing on top and an outlet tube is made, which is led outside the passenger compartment. Or a battery with AGM technology is used.

If you decide to make such changes, then be sure to follow the following rules:

Electrical connectors must be insulated. The battery and its terminals must be covered on top with a solid rubber or plastic cover.
The battery should be placed on a metal tray with edges covering the bottom of the battery on the sides;
The battery must be secured with at least two steel straps, measuring at least 20 x 0.8 mm, covering it and secured to the body with bolts with a diameter of at least 10 mm; in places where the tapes are attached, the body must be reinforced with metal plates with an area of at least 20 sq. cm and a thickness of at least 3 mm;
The top of the battery and its fastenings (strips) must be covered with a solid plastic or rubber casing to prevent leakage of electrolyte into the passenger compartment in any position of the car;
the fastening of each of the listed elements (pan, battery, casing) must be independent: the destruction of any element should not weaken the others;
It is necessary to install a ventilation system that removes vapors from under the battery casing into the space outside the car.

To transfer the battery you will need:

Wires with a cross section of 1*16, about 6 m.
Battery terminals, 2 pcs.
Terminals to screw to the body and engine, 2 pcs.

Now about how to connect the battery in the trunk : We stretch two wires from the engine compartment into the trunk, through the hole that was previously used for the headlight range control. We lay the wiring under the threshold on the driver's side, next to the standard wiring, only between layers of sound insulation, so that there is no contact with the standard wiring and metal.

We install a fuse on the positive cable (for example, from an audio system, it is just right). We are modifying one of the niches in the trunk so that the battery is installed according to all requirements.

Actually, from the title of the post it is clear what will be discussed. Since it is planned to install additional power consumers in the future, I decided to install a larger capacity battery. Quite by chance, I was given a 90 Ah battery, a little used, but in good condition. It did not fit into the engine compartment and it was decided to install it in the trunk. The second argument for installing the battery in the trunk was the irresistible desire to make the engine compartment beautiful, remove everything unnecessary, and hide the wires.

How to move the battery to the trunk of a car

On some car models, the battery is installed in the trunk as standard. Why put it there? What advantages does this provide and what are the disadvantages? We are trying to move the battery into the trunk of a VAZ 2110 .

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In the case of a Russian car, there is no need to talk about ideal weight distribution of the body, so when moving the battery into the trunk, other goals are pursued:

More space under the hood. If you decide to do tuning under the hood, then there will be no wasted space.
The battery is inside the car, which prevents it from freezing too much in cold weather, and therefore makes it easier to start the engine in winter.

The disadvantage is the inaccessibility of the battery. For example, the battery is dead and the trunk is full to capacity.

If you decide to make such changes, then be sure to follow the following rules:

Electrical connectors must be insulated. The battery and its terminals must be covered on top with a solid rubber or plastic cover.
The battery should be placed on a metal tray with edges covering the bottom of the battery on the sides;
The battery must be secured with at least two steel straps, measuring at least 20 x 0.8 mm, covering it and secured to the body with bolts with a diameter of at least 10 mm; in places where the tapes are attached, the body must be reinforced with metal plates with an area of at least 20 sq. cm and a thickness of at least 3 mm;
The top of the battery and its fastenings (strips) must be covered with a solid plastic or rubber casing to prevent leakage of electrolyte into the passenger compartment in any position of the car;
the fastening of each of the listed elements (pan, battery, casing) must be independent: the destruction of any element should not weaken the others;
It is necessary to install a ventilation system that removes vapors from under the battery casing into the space outside the car.

Transferring the battery to the trunk of a VAZ 2107

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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.

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.

Stories from our readers

“Fucking basin. "

In the case of a Russian car, there is no need to talk about ideal weight distribution of the body, so when moving the battery into the trunk, other goals are pursued:

More space under the hood. If you decide to do tuning under the hood, then there will be no wasted space.
The battery is inside the car, which prevents it from freezing too much in cold weather, and therefore makes it easier to start the engine in winter.

The disadvantage is the inaccessibility of the battery. For example, the battery is dead and the trunk is full to capacity.

If you decide to make such changes, then be sure to follow the following rules:

Electrical connectors must be insulated. The battery and its terminals must be covered on top with a solid rubber or plastic cover.
The battery should be placed on a metal tray with edges covering the bottom of the battery on the sides;
The battery must be secured with at least two steel straps, measuring at least 20 x 0.8 mm, covering it and secured to the body with bolts with a diameter of at least 10 mm; in places where the tapes are attached, the body must be reinforced with metal plates with an area of at least 20 sq. cm and a thickness of at least 3 mm;
The top of the battery and its fastenings (strips) must be covered with a solid plastic or rubber casing to prevent leakage of electrolyte into the passenger compartment in any position of the car;
the fastening of each of the listed elements (pan, battery, casing) must be independent: the destruction of any element should not weaken the others;
It is necessary to install a ventilation system that removes vapors from under the battery casing into the space outside the car.

To transfer the battery you will need:

Wires with a cross section of 1*16, about 6 m.
Battery terminals, 2 pcs.
Terminals to screw to the body and engine, 2 pcs.

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Published by Lekha, November 25, 2008

Despite the advantages, there are also negative aspects of this rearrangement.

The main disadvantage is that the battery is located in a hard-to-reach place. It will be quite troublesome to remove a discharged battery from the bottom of the luggage compartment, especially if the latter is filled with cargo - you need to unload the trunk, remove and charge the battery, install it in place and load the trunk again.

Important! In addition to this inconvenience, there is another drawback - evaporation

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If the battery is filled with liquid electrolyte, then it is better to cover it with a plastic outlet tube so that during the evaporation process the toxic fumes do not harm people inside the car. Interestingly, the battery can be used in conjunction with AGM technology.

If you still decide to move the battery in your car into the luggage compartment, then you must follow certain rules:

All connectors on cables and wires must be carefully insulated, the battery on top must be covered with a rubber cover or plastic sheet;
The battery must be positioned so that its bottom touches the metal surface;
the battery must be secured with at least two steel straps measuring at least 20x0.8 mm, and the fastening bolts must have a diameter of at least 10 mm;
to avoid leakage of harmful substances, the battery together with the tapes securing it must be covered with rubber or plastic material;
To remove harmful vapors from the car, it is recommended to install special batteries.
In order to move the battery into the luggage compartment, you will need: about 6 m of wire with a cross-section of 1X16, two battery terminals and two fastening terminals.

How to connect a battery installed in the trunk

The power cables will enter the luggage compartment directly from the engine compartment. They will go through the hole for the optical corrector. The wiring is attached to the sill next to the standard wiring on the driver's side. Wires located between the layers of sound insulation will not contact each other. A fuse is installed on the positive cable. In addition, in order to install the battery in accordance with all safety standards, some modifications will have to be made in the luggage compartment. In the corresponding section of our website you can find an article about the modernization of VAZ 2110 generators.

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