Different Battery Sizes – Introduction and Shapes

Jul 21, 2021   Pageview:28

Batteries are very important in our lives today. They are used in powering almost every electronic device in the world.

These sources of power have come a long way. And yet, many people still don’t know the differences that exist when purchasing and using batteries.

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In this article, we will be dealing with different sizes and shapes of batteries. Understand that each type is dedicated to a specific use, which makes the biggest differences.

Come along.

Different Battery Sizes for Cars

Have you been wondering what types and sizes of car batteries are out there? Or perhaps you only have one type, which is in your current car.

Well, you will be surprised to know that there are many other types. When you are looking for a new car battery, you will need to consider some of the features you will need to consider. Leading brands offer these different products to help you get the right batteries at any given time.

Before we look at the sizes of car batteries, let us start with types.

Car Battery Types

How do you know the right battery type for your vehicle? Or do you just choose anything that fits in the battery compartment? We are here to answer this question for you.

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Wet Cell Batteries

Wet cell batteries are also known as flooded batteries. They are lead-acid cells made explicitly for vehicles. This is probably the battery inside your car right now.

It is the fast rechargeable battery ever created. It contains a liquid electrolyte. Some may require maintenance by changing the water in the diluted acid. Modern wet cell batteries come with a semi-solid electrolyte.

These batteries come in two variations:

SLI. Starting, Lighting, and Ignition (SLI) batteries are specifically designed for starting your car. They use quick, short bursts of energy to power the motor.

Deep cycle. This type is also known as a marine battery. They last longer than the SLI type and are used for extended energy delivery.

VRLA Battery

Valve-regulated lead-acid cells are sealed batteries without any ventilation. They are sued in small spaces where ventilation is not possible. They are easy to store because they are sealed.

VRLAs come in two types too:

Gel Cell batteries: These batteries do not contain a liquid electrolyte. Instead, it features a jellified electrolyte. They are tough and very resistant to hot temperatures.

Absorbed Glass Mat batteries: The electrolyte is held inside glass mats instead of free-flooding the plates. The mats are made from thin fibers, meshed together into an electrolyte-absorbed glass mat.

Car Battery Sizes

Car batteries come in group sizes, which show the actual physical size of the battery. This information also includes the polarity of the battery. Vehicle manufacturers consider this when designing solutions for different types of vehicles.

These sizes make sure you get a simplified, industry-standard battery for your needs. You can replace the batteries from anywhere with ease.

These battery sizes include:


Side-post Batteries

These are specific group sizes for certain vehicles. They are common in General Moto vehicles. The batteries feature cable ends that screw into the battery’s side. The batteries are sizes 41, 42, 47, 48, and 49.

Standard Top Post Batteries

This is the most common battery size group. You will find them in Japanese vehicles, most imports, and American-made vehicles. You need to find the most appropriate size to keep it secure in your car.

For instance, you will find a specific group with the width and length as another group but is different in height. If you choose a taller battery for your care, it will not fit in the battery trail properly. If it’s too tall, it can even touch the car’s hood, causing a spark that will set your car on fire.??

If you are not sure about the right size, consult with a specialist. You can always find someone who understands your car to help.

Most common sizes in this group include 24, 24F, 25, 34, 35, 51, 51R, 52, 58, 58R, 59 and 65.

Another common type of car battery today is the Electric car battery used in EVs. They are much larger and heavier than those standard batteries, and their capacity is even higher.

Different Battery Sizes and Shapes

There is a wide range of battery types and sizes on the market today. Each type is designed for specific services.

The most common shapes include:

Custom Shape Batteries

Many people have believed that polymer batteries are different. And yet, they are one of the most common lithium-ion batteries you will find out there. Custom shape batteries are assembled and packaged in a flat, bag-like shape. There are designed based on the li-ion battery type.

Polymer batteries can come in any custom size or shape. Hence, they are suitable for mobile devices.


These are standard cylinder 18mm batteries with 65mm height. Their shape and size have made them unique and cheap. They are common in laptop battery packs and similar products.

Prismatic Shape Batteries

These batteries are very similar in nature to polymer batteries. However, they are packaged in solid casings or tanks made from aluminum alloy. Hence, they offer better mechanical protection and safety.


Battery Sizes

The most common battery sizes include:

The custom sizes. These come from polymer batteries

AA batteries


C batteries

D batteries

9V PP3 Batteries

6LR61 Batteries

LR Clock batteries

CR123 CR123A






Button cell

Lithium coin

Lithium AA AAA

Specialist size batteries

Understand these sizes will help you pick the most appropriate battery for your device. Car batteries are much large and different from common consumer batteries.

Which are bigger, C or D batteries?

Size C and size D are among the most common battery sizes on the market today. They are both 1.5Vs, but with different sizes and energy storage.

Size C batteries measure 50mm in length and 26.2mm in diameter. Considering this, size C is much bigger than the size D battery. Also, a size D battery is neither rechargeable nor non-rechargeable.

There you have it, everything concerning battery size and shapes. Now you are ready to pick the right one.


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