1. Polarity
It is necessary to purchase a battery with the same polarity as the standard battery. Understanding the terminology is simple: turn the battery with the terminals facing you. If the plus is on the right, it is a reverse polarity battery. Such batteries can be found on most modern foreign cars. If the plus is on the left, it is direct polarity. These were installed on domestic models – up to and including Grants, Niva and Niva Travel. In terms of electrical parameters, they are the same, but it is often impossible to attach a battery with a “strange” polarity: there is not enough cable length.
2. Asians and Europeans
European and Asian batteries differ in size and housing type, but the main difference is in the current output. Typically, Asian-made batteries are higher than European batteries of the same capacity. Therefore, some “European” batteries can be put in cars from Asia, but not vice versa. In modern cars, the positive wire is often overgrown with a bunch of fuses. And on Crete, for example, with a normal Asian battery, this device does not fit in the recess of the European battery.
The case of an Asian battery can look like a parallelepiped, the poles of which stick out at the corners (they are both round and flat). European batteries always have two round poles – they are recessed in niches. Therefore, the disadvantage of “Asian women” is a high probability of closing the battery terminals in an accident. We also note that for small cars, such as key cars, “Asians” may have smaller diameter pole cables. They have no European alternative.
3. Attachment to the body
The “lower” mounting is usually used on European cars. These batteries have a ridge on the body, which clings to the clamp bar, which holds the battery in place. Most Asian batteries have a “top” holder. The bar runs along the top face of the battery. It is attracted by two studs coming out of the bottom of the platform below the battery. With such a top bar you can usually also pull a European battery – as long as there is enough wire on the studs. But the “Asian” without a lower flange in the engine compartment of a European car simply cannot be repaired. Consider that a loose battery vibrates strongly and dangles, while the active mass of the plates quickly crumbles. Such a battery can become unusable after several months of use.