There are plenty of car batteries and not all of them will work for your car. Certain vehicles with larger or more complex electric systems require durable batteries instead of little cars with no whistles or bells. In addition, your car should be suitable for the dimensions and the placement of the positive and negative. You need a battery that fits in literally. The selection of the right battery ensures a forceful beginning and easy substitution every time.   Even if they were designed for a different vehicle, batteries with the same designation can be used interchangeably. H6 or 21R are common industry-standard designations for group sizes that are used to classify various types and sizes of automobile batteries that can be swapped out. In most cases, the only information you will need to receive your new VARTA battery in UAE is a suitable CCA value and the correct car battery size group.