How Much Does a Car Battery Weigh? Average Weigh Explained

As we look for the weight of everything we buy, batteries of the car we buy during replacement of the previous one are also bought according to their weights. People who want their car to be lighter and think that it can work better with lighter components look for a lighter one and one who feels heavier components can give solidity to their cars go for heavier ones. But in case of weighing batteries for your car, you have to know that you cannot put any weight in your car.

The weigh of the battery you are putting is important because it decides the amount of power your car will get, which in turn decides its performance. So here we will tell you the importance of using a correct battery, why we have to check the weigh while buying it, classifications and importance of size.

But before moving further one should know that when we talk about the battery’s weight the weight of the body of the battery is not included in it. The difference in weight of the batteries arrives because of the volume of liquid electrolytes and the number of plates present inside is responsible for generating electricity.

As the amount of electrolytes and the number of plates inside the battery increases the battery becomes heavier since it’s an obvious thing that as the amount and quantity of a particular matter increase the weight of that thing automatically increases.

How Much Does a Car Battery Weigh?

Classifications Of Battery Weigh


Batteries having lightweight are 10-20 pounds. People use these lightweight batteries in small cars which have less power requiring devices, smaller lighting system, less power AC, less power Windows extra. Most importantly they take less power in starting the engine as their engine sizes and weight are also less. In a lightweight battery, the amount of electrolyte and number of plates present for the current generation is less therefore their weight is also less and the energy they provide to the vehicle is also less.


The standard weight of a car battery is 40-60 pounds. Well, this long-range contains many different models of car batteries.


These batteries as by name contain used electrolytes and plates. So, the only weight they have is of their bodies. The weight of these empty batteries is 7 pounds for a lightweight battery and about 15 pounds for a standard or some much heavier kind of batteries.

How to Know your Battery’s Weight?

You can easily get to know your battery’s weight by finding out the label on it. The label put up by the manufacturer tells about the weigh and some other important aspects like how much voltage potential difference it creates, Ampere current needed to charge it and current it provides for giving power to the engine.
Also, you can know the weight of your battery or any car battery by searching the BCI group size number. This is an alpha-numeric number that contains the group of cars with a similar weight of the battery in one group.
The reserve capacity is another code that tells the weight of the battery.

Types of Battery

The hybrid type of batteries nowadays found in the market have lithium-ion chemistry instead of previously used lithium-acid chemistry, this kind does not have heavy weighing plates for the making of energy, therefore, these are lighter and weigh less. This hybrid battery weighs 28 pounds. These types of batteries are best suitable for the ones who want lighter weight batteries for their cars.

Why Does the size Matter?

As the size of the battery increases the number of plates and the volume of electrolytes also increases which in turn increases its weights. Similarly, as it decreases weight also decreases. For this very same reason, it’s important to check the size of the battery you are purchasing. As it directly affects the power generated by the battery that should be according to the power your engine needs.

Why does the Weight of the Battery Matter?

The weight of the battery matters because by this the primary work to start an engine will also be affected Ex: If you should have a high power battery and you use a low power battery, how will your engine start with low power given to it? Similarly, a high power battery can damage a low power requiring an engine due to providing extra unwanted power to the engine. By this mistake the first work of a battery cannot be done properly then how can we do all other works using a wrongly chosen battery?

So, You must be wondering if we are talking about the power of the battery, “how does this relate to the weight of the battery?”

Here is the answer to this question

The amount of power that a battery generates depends upon the volume of electrolytes and the number of plates it contains in itself. As the amount of these two things increases and decreases in a battery, the weigh of the battery also varies inversely. And also according to this as there will be more plates and more volume of electrolytes, more power will be generated with the increase of the weight of ingredients (indirectly).


We should choose the correct weight battery for our cars. Select the one which is close in weight to the battery which is replaced.

Leave a Reply