What is the direct and reverse polarity of the battery

Purchase of parts or various equipment for a car imposes certain obligations on the car owner. It is important to properly deal with this issue, especially if it concerns the electrical part of the machine. Going to the store, it is worthwhile to clarify in advance which battery polarity is direct or reverse. An error in the choice can cost quite expensive in the future.


  • 1 Relevance of choice
  • 2 Applicable standards
  • 3 Problems with reversal

Relevance of choice

When going for a new battery, usually motorists are interested in several main parameters of the product:

  • capacity;
  • voltage;
  • dimensions.

The fact that such a direct and reverse polarity of the battery, they can think, just trying to use the wrong product. Although visually such a difference is not evident to an unknowing person.

what is the direct and reverse polarity of the battery

Understanding what the battery polarity means is direct or reverse, it must be borne in mind that this phenomenon does not apply to physico-chemical parameters, but lies in the plane of the structural difference.

Inside, most standard batteries consist of several small batteries separated by special barriers. Usually modules 6 pieces in a 12-volt product. In each of them there are positive and negative plates, and under normal conditions, all modules produce a voltage of about 2-2.2 V, and all of them are connected to each other in series. All of them are arranged in a predetermined sequence relative to the front wall of the finished product.

what does the polarity of the battery direct or reverse for Russia

Applicable standards

Installed in passenger cars, batteries on the outside are equipped with a pair of external terminals, which are called “positive” and “negative”. Traditionally, they are labeled with mathematical symbols "+" and "-". It is necessary to take into account that according to the international classification, the designations are made exclusively in a relief way (convexity / concavity). Thus, they can be disassembled in any conditions, including night time.

Specifying the reverse polarity of the battery, what it is, it is necessary to take into account the position of Clem in relation to the motorist. First you need to set the battery accordingly. We turn its wide side towards us so that the contacts are as close as possible to the viewer.

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Top label will be readable. In a similar position on the right hand there will be a “plus”, and on the left - a “minus”. This position will be reversed. It is typical for the vast majority of modern European manufacturers. Opening the hood of any popular foreign cars such as BMW, Audi, Skoda or others, you can find exactly this type of device.

What does the battery look like with reverse polarity?

battery with reverse polarity

In the case of domestic auto drivers should be interested in the question of another, the direct polarity of the battery, what it is. This is due to the specifics of our cars. In them from the VAZ 2107 and "Moskvich" to "Kalina" and "Vesta" used a direct type of mounting terminals. In some sources there is a variant of the name - “Russian type”.

There are also other, less popular forms of installation of remote contacts, in which they are located, for example, diagonally or at the short sides of the battery. However, these individuals are rarely found on completely exotic car brands. The most frequent "foreigners" with us is a battery with reverse polarity.

It is important to know that there is a structural difference between the "Asian" and "European" version of the battery.

what does the polarity of the battery direct or reverse

Traditionally, in European batteries, the contacts are “recessed” below the main upper plane. Products of South Korean or Japanese companies are equipped with batteries with protruding terminals. They also differ slightly in diameter, so it is necessary to take into account this fact when zagryagivaniya contacts, so as not to fly off the bumps.

Reversal problems

Incorrectly selected batteries can lead to disastrous results. Replacing the poles on an expensive machine can cause a short circuit. This fact entails the failure of the main electronics (“brains”), without which the car will not budge.

It is also possible a more negative outlook, according to which sparks under the hood will cause a fire. A fire in the garage can lead to disastrous results.

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Helping the driver in such a situation, not bringing to a negative scenario, caring car engineers. They mark the wires with contacts with the color and the Sami outputs on the battery with colors: red + and black -. This should stop the attentive driver. Also, if the wrong battery is installed, the length of the wires to the corresponding contacts may not be enough. It is necessary to take into account that the traditionally positive terminal has slightly larger dimensions in both the Asian and European versions.

It is important to know that it is necessary to be guided to determine the polarity only by the relief pattern, as the stickers may be randomly confused.

Some drivers twist the battery with the wrong polarity 180 degrees, but do not do it, even if you use extension cords for the terminals. It is problematic to calculate the cross-section of wires, as well as excessively long contacts can come into contact with undesirable places with other equipment. Categorically it is also impossible to prevent the crossing of the wires.