Where Is The Battery In A BMW

by Phil Borges // in Car

If you're wondering where the battery is in a BMW, don't worry – you're not alone. A lot of people are curious about this and with good reason. After all, the battery is an important part of any car. It's responsible for starting the engine and providing power to all the other components. So, where is the battery in a BMW? Let's take a look. This blog post will discuss everything you need to know about the BMW battery.

Where is the car battery in a BMW 3 Series?

In a BMW 3 Series, the car battery is located in the trunk. The battery is housed in a black box that is typically located in the right corner of the trunk. If you need to replace the battery, you'll need to open up the box and remove the old battery.

The placement of the battery in the BMW trunk is a strategic decision that offers several benefits. 

-To improve weight distribution and handling. The battery's centralized weight can cause the car to feel top-heavy and unstable, especially when turning or braking. Placing the battery in the trunk helps to balance out the weight of the car and improve its driving performance.

-To create more storage space in the cabin. The trunk is a valuable storage area, and by placing the battery there, BMW frees up more space in the cabin for other items.

-It is more convenient for the driver to have the battery in the trunk. 

-It's also easier to access and replace if necessary. And finally, placing the battery in the trunk helps to distribute weight evenly and improve balance and handling.

-Placing the battery in the trunk helps to keep it cool and protected from heat and weather conditions.

-Another benefit is that it can help to keep the engine cooler, as it will have less heat to dissipate. This can improve performance and extend the life of the engine.

Knowing where the battery is in your car can be helpful if you ever need to replace it. If you're not sure where it's located, consult your owner's manual or take your car to a mechanic for assistance.

How do you jump-start a BMW?

Now that you know where the battery is in a BMW, the next thing you would need to do is to how to jump-start it if needed.

Jumping a car is a way of providing an alternative source of electricity to the battery in order to start the car. When the battery dies, you can use another car to jump-start it by running cables from the other car's battery to the dead battery. This provides a surge of electricity that can be used to start the car.

It's important to note that jumping a car should only be used as a last resort because it can damage the battery or even cause a fire if not handled properly. If you're stranded with a dead battery, however, it may be your only option. Be sure to consult your owner's manual for more information on how to jump-start your specific make and model of car.

You will need another working vehicle and some jumper cables to jump-start your BMW. Once you have those things, follow these steps:

1. Locate the accessibility posts under the hood.

BMW has its battery in the trunk, and you are not accessing it from this panel, but you need to locate the posts to which the jumper cables will attach from under the hood.

Simply open the hood, and you will find the posts on the left side of the engine bay. The positive terminal is usually covered by a red cap, and the negative terminal is a black one (somewhere near it). There are also signs next to each post that will indicate which one is positive and negative.

These posts are very accessible and easily visible. You can use these posts to jump-start your car, charge your battery, or test it with a multimeter if you think it might be faulty.

If you cannot find the posts or are unsure of their location, consult your owner's manual for further assistance.

Once you have located the posts, it is time to move on to step two.

2. Connect the jumper cables to the correct terminals.

Attach one end of the red jumper cable to the positive terminal of the dead battery. Then, attach the other end of the red jumper cable to the positive terminal of the donor car. Next, attach one end of the black jumper cable to the negative terminal of the working battery and attach the other end of the black jumper cable to a negative post surface on the car with a defective. This will ground the black jumper cable and prevent any sparks from flying.

Make sure that the cars are not touching each other and that all of the cables are securely attached before moving on to step three.

3. Proceed with jump-starting the car.

Now that you have everything connected properly start the donor car and let it run for a minute or two. Then, switch off the donor car and start the BMW. It should start right up. Once it has started, drive it around for a few minutes to keep the battery charged.

If the car doesn't start, there may be a problem with the jumper cables or the donor car. Try again with another set of jumper cables or another working car. If you are not comfortable jump-starting your car, take it to a professional mechanic. They will be able to do it safely and correctly for you.

Just a friendly reminder, always consult your owner's manual before attempting any kind of repairs or maintenance on your car. It is the best source of information when it comes to taking care of your vehicle.


The battery in your BMW is the key to starting your car and running all of the electrical systems. By knowing where it is and how to access it, you can be ready to jump-start your car in case of a dead battery or simply replace the battery if it fails. BMW is at the forefront of electric car technology with its battery in the trunk design. This new construction not only provides a lot of convenience to the driver, but it also has a safety feature built-in. The battery is less likely to be harmed in the event of a rear-end collision.

About the author, Phil Borges

Phil Borges is a battery aficionado. He's written extensively about batteries, and he loves nothing more than discussing the latest innovations in the industry. He has a deep understanding of how batteries work, and he's always on the lookout for new ways to improve their performance.