What Size Battery Does My Car Need? Informative Guide

Choosing the accurate sized battery for your car is one of the best things you can do for your vehicle. It’ll make the automobile much more responsive and give you a better overall driving experience.

Besides the dimensions, you need to be careful about picking the correct type of charging cell for your van as well. That way, you’ll get the best results and a hassle-free drive.

If you don’t know the question of what size battery does my car need, we have got you covered. Below, we’ll cover everything you need to know about battery sizes, types, interesting facts, tips to make this product charging remaining longer etc.

car battery size


What Size Battery Does My Car Need?

Different cars come with different body shapes and loads. That means the power requirement also varies from model to model. That’s why the battery length is also different for ranges of vehicles, and you need to learn about it. For instance, an automobile battery size is different from a tractor.

Different charger cells exist so that the customers can easily get the right battery for their automotive. These universal sizes will easily fit their car and won’t create any mismatch or misalignment, which is a vital thing.

Also, if you learn about these dimensions, you’ll be able to tell which size is right for which car, and that’s quite a handy skill to master. However, you need to remember that the dimensions can get pretty confusing quickly as there are many options available out there.

But some of the most common ones are 24, 24F, 25, 34, 35, 51, 51R, 52, 58, 58R, 59, and 65, and these are more than enough to learn about as they’ll cover most of the vehicles easily, and you don’t have to worry about other stuff right away.

Battery Group Size Chart

There are many battery measurements divided into groups so that the consumers can easily find the right one for their automobiles and get the perfect fit. That allows you to instantly recognize which car battery size is suitable for which vehicle and that’s pretty amazing.

Below, we’ll look at a group chart that will help you learn about it. You can also take a look at the battery sizes chart and get information about the measurement of popular groups at a glance. Let’s check out the chart without any further ado.

Battery Group 21 24 27 30H 31 4D 8D
Voltage 12v 12v 12v 12v 12v 12v 12v
Length (Inches) 8.19 10.25 12.06 13.5 13 20.75 20.62
Width (Inches) 6.81 6.81 6.81 6.81 6.72 8.75 10.95
Height (Inches) 8.75 8.87 8.75 9.25 9.44 9.88 10.17

Car Battery Types

After seeing all the different sizes of batteries and finding out what battery fits my car, it’s easy to tell that there are different types of car batteries available there as well. In fact, many types of batteries are currently used for automotive that provide specific uses to the users, which is excellent.

Let’s check out 8 different types of batteries below. Among various options, these are the most common ones that you’ll see out there the most and it’s enough to learn about these rather than the other ones.

  • Absorbent Glass Mat Battery (AGM)
  • Wet Cell Lead Acid Battery
  • Silver Calcium Battery
  • Deep Cycle Battery
  • Lithium Ion Battery
  • Nickel Metal (NiMH) Hydride Battery
  • Enhanced Flooded Battery (EFB)
  • Dry Cell Battery

Among them, the AGM, the EFB, and Lead Acid batteries are the most commonly used batteries in the automobiles of modern time. That’s because they are quite powerful, reliable, and last for a very long time, unlike other batteries like the wet cell car batteries. So, these are preferred by all the users who want a battery that’ll give them the best performance for their money.

What Happens If You Install the Wrong Sized Battery?

Most people wonder if choosing the right sized battery even does any good to the vehicle or if it’s just being picky for no reason at all. Well, it’s essential to get the measurement as it can have many impacts on the cell and the car if you don’t get it right. Now that you know what size battery I need, let’s discuss the wrong dimension batteries in greater detail.

First, you need to understand that a wrong-sized battery will put your vehicle at risk. The item is very likely to mismatch and generate a very high temperature. That will definitely compromise the health of the battery, and it can die after a very short while.

Besides just a shortened life, it can cause many other issues when you’re driving your van, such as trouble with the cold cranking amps. That’s why it’s wise not to go down this route and pick the right length battery when you go to buy it. That way, you won’t have to deal with any of the mentioned issues, and you’ll get the best performance.

So, take the advice of getting the measurement of the battery correctly for your car when you still have the time for it. It’ll save you a lot of trouble in the future, and you should not ignore the importance of a proper installation of the cell in your vehicle.

Additional Car Battery Preventive Tips

As you probably know, your car battery has a limited life span. And as the lifespan expires, you’ll have to replace the battery to be able to enjoy a smooth ride.

However, if you follow some simple tips and tricks, you can enhance the longevity of your car’s charger cell, which can help reduce the cost as you won’t need a frequent replacement. Below, we’ll go over a handful of tips for all sizes batteries that’ll help you achieve that very easily.

  • Always try to buy brand-new batteries for your cars. They perform much better and last for a long time. But if you’re absolutely short on cash, then you can buy used ones after checking the battery.
  • Warranty is your friend when you’re buying a battery for your vehicle. So, be mindful of that when you go to the store and decide to spend your money to purchase the product.
  • A regular maintenance check is a must for your auto batteries. Check the cables, terminals, and connectors and see if they’re functioning correctly. You want to keep them corrosion-free.
  • Once the battery starts to create shutters the performance of your vehicle, you know it’s time to replace the old item with a new one. You should not wait around for it to completely die as it’ll give you a constant headache operating the car every day.
  • Take expert help if you don’t feel confident doing something on your own. Remember, wrong wirings or stuff like that can damage the battery. So, it’s best to spend a little money on expert services rather than ruining it for the long term.

battery size for my car

How Long Does a Battery Last?

Many things come into play when you ask how long does a car battery last. It’s going to be a different answer for every case as there are no fixed answers for that.  However, most batteries last anywhere from 3 to 4 years without any hiccups.

But as you can already tell, it’s an average estimation, and there are a lot of things that can change that number. For instance, if you buy a premium battery that’s super high quality, it’s very likely to last you a very long time. Buying batteries from a reputed brand also ensures that they will have a better overall lifespan.

Also, if you do proper maintenance and charge battery regularly, it is very likely to last you a long time. So, in the end, there are tons of factors influencing how long it will last for you. Get a good quality one for your car and follow proper maintenance to have the best results possible.


Hopefully, after reading the in-depth discussion, you got the answer to your question of what size battery my car needs. As you saw, having the correct sized parts installed in your car is super crucial for the best performance.

Make sure to use the charts and guides to help you pick the correct dimensions and type of battery for your car. Also, don’t forget to apply the tips, which will make your car charger cell last a very long time. If you follow these properly, you’ll know the answer to know what kind of battery do I need and have a much more hassle-free and smooth experience with your vehicle.


Mr. Rubel is an Engine Mechanic. He has more than 15 years’ experience on repair and maintenance of different kinds of vehicles. He is also providing training to mechanics and works as a Senior Mechanic of a well-known organization. He is sharing his knowledge to support the car lovers to solve the vehicle issues.

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