Comparison Atlas Dupex LX80D23L vs Varta Blue Dynamic 570413063

The form factor describes the general design features of the battery, primarily the way the terminals are installed and their dimensions, as well as the dimensions of the battery itself.

— European. A distinctive feature of European batteries are the terminals, somewhat recessed into the case. Due to this, this form factor is considered safer than the Asian form factor — the risk of a short circuit is lower when the battery falls on a conductive surface or when a metal object hits it. In addition, the terminals themselves are usually made in the form of Euro cones (see below for more details). As for the dimensions, European batteries have more depth and less height than Asian ones. As the name implies, this form factor is found in cars of European manufacturers, mainly passenger cars.

— Asian. Asian batteries are easy to identify by the terminals protruding from the top of the case; also, these terminals can be noticeably thinner than European ones, because. many models use JAP cones (although not all). If compared in size, then the "Asians" are taller and thinner than the "Europeans" (more precisely, they have less depth). This option is popular with Japanese and Korean automakers, and is also quite widespread among trucks.

— American. A rather rare form factor on our roads — due to the fact that cars from American manufacturers are most often delivered to us in the form...of modifications adapted to Europe or Asia; original versions are rare. Lightweight batteries of this form factor have "USA" screw terminals (see "Terminals"), located not on the cover, but on the front wall of the case. At the same time, both “purely American” and combined batteries are produced, which, in addition to a pair of USA terminals on the front wall, also have contacts on the cover that are more familiar to east european drivers. And in cargo batteries of this form factor, the terminals are usually installed on the cover, in the left side location.

When choosing a battery, it makes sense to clarify which form factor is optimal for your car: a discrepancy in this parameter can cause compatibility problems up to the complete impossibility of installing a battery.

In this case, polarity refers to the location of the terminals on the battery. Traditionally, it is named after the location of the “+” terminal when looking at the battery from the front side (or, in the case of side terminals, from the side closest to which they are located).

— + on the left. With regard to passenger cars, such polarity in the CIS countries is often called “direct” or “ours”, because. the left location of the "plus" is typical for cars of the Soviet and Russian design. At the same time, in trucks (see "Destination") the situation is opposite — the left "plus" is the European standard.

— + on the right. In passenger cars, the right “plus” is typical mainly for European models, for which this polarity in the CIS countries received the unofficial name “euro”, or “reverse” (as opposed to the east european “direct”). The opposite is true for truck batteries.

— + right / + left. This marking means that this battery model is available with both right and left "plus" (see above), and you can choose the option depending on the car model.

Note that the above division into “direct” and “reverse” polarity is not absolute, and anyway, before buying a battery, this parameter in your car should be clarified separately.

Battery starting current measured in accordance with EN (Uniform European Standard). According to this standard, the starting current is the maximum current that a battery at an electrolyte temperature of -18 °C can produce for 30 seconds without a voltage drop below a certain level (for standard 12 V batteries — not lower than 7.2 V). The term "starting" appeared because this mode of operation is similar to starting the engine, when the battery has to supply a high power current to the starter for a short time.

The recommended value of the starting current is generally related to the weight category of the machine: the heavier it is, the more powerful current is usually needed to start. And many manufacturers directly indicate the recommended values \u200b\u200bin the characteristics of a particular model of transport. If the battery is bought as a replacement, then the general rule is that its starting current must be no less than that of its predecessor.

Note that in fact there may be designations of starting current according to 3 more standards: SAE (USA), DIN (Germany) and TU (GOST 959-91, Russia). The first one is practically identical to EN, while DIN and TU are quite easy to convert to EN and vice versa: they are similar to each other, and each of them gives a number approximately 1.7 times less than NE. That is, for example, to replace a battery with 200 A according to specifications, you should look for a model with a current of at least 340...A (200 * 1.7) according to EN.

Has a charge indicator on the battery.

Such an indicator displays the current charge level and allows you to generally assess the state of the battery literally at a glance, without additional actions and diagnostic equipment. In some models of serviceable batteries, the indicator can signal not only the need for charging, but also the need to add water to the electrolyte (for more details, see "Maintenance").