Updated at: 17-04-2022 - By: micdot

As you already know, your battery is an important part of your car that makes it easy to drive.

However, there are a few things you should look for that show that the battery is about to die.

Your battery might leak if it smells like sulfur at all. This should be checked out.

People who have a swollen battery case, a slow turn-over or engine crank, and low fluid levels can have a BMW i3 12v dead battery. These are all things that can happen.

The following are some of the things we will talk about in this post: dead BMW i3 12v battery symptoms, why does the BMW i3 battery charge while the car is stopped, how many years does a BMW last, and how long does a BMW battery last. With that in mind, let’s start.

BMW I3 12V Battery Dead

When your battery smells like sulfur, or if your car’s bonnet smells like sulfur a lot, that means it’s leaking. This should be checked out right away.

All of these things are signs that your BMW i3 12V battery is dead.

A BMW I3 12V battery that is dead will make it hard for your car to start by making you put it in N (negative), which will show up on your dashboard.

I think it’s important to keep your car in shape. You should read the car’s owner’s manual often to see when it needs to be serviced. This will only make the BMW car more reliable.

Why Is BMW I3 Battery Discharging While Stopped?

The engine Start/Stop features on most modern cars are meant to make the car run more efficiently when it’s at a stop light. It helps to shut down the engine, but it doesn’t completely shut down other parts of the car battery that use electricity. Is it because of the following:

Your battery might be older than three or four years, which means it has less capacity.

During the time that your car was not running, a module on your car lost a lot of electricity.

The battery IBS unit might not work. This is what you need to know.

The programming needs to be changed to make the computer more sensitive.

However, the solution is for you to be aware of these problems and change the way you drive so that your battery has time to recharge. Do the following:

Use less short drives and let your car idle for a while when it’s cold.

Make sure you try to get C-Tek battery conditioning charger so you can plug the car in when it needs to be recharged

Try to use as few of the extra features as you can, as much as possible.

Try turning off your car’s auto start and stop feature to save battery power.

Dead BMW I3 12v Battery Symptoms (BMW i3 12V battery dead)

Keep in mind that your car’s battery is an important part that makes it easy to drive.

However, there are a few things you should look for that show that the battery is about to die.

If your BMW i3 12v battery dies, these are the things you should look for, like:

#1. Illuminated Check Engine Light

It’s important to know that your check engine light on the dashboard can mean anything, including that your battery is running out of power.

You can check your car’s manual for information about the check engine light, and then have the battery checked to see if it’s working at its full capacity.

#2. Car Backfiring

Make sure you don’t miss this early warning sign. This is because a dying car battery has the power to make big sparks, which can cause fuel to build up in the cylinders.

When this happens and the fuel is ignited, it has the chance to get more powerful, which makes the car backfire.

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#3. Inability To Start The Engine

One of the signs of a dead battery is that the engine won’t start as it should. Keep in mind that after a while, the battery parts will wear out, which makes them less effective.

Because your battery will take longer to charge for the starter when this happens, you’ll have to wait a while for your car’s engine to start.

#4. Having Dim Headlights

It won’t be able to fully power your car’s electrical system, which includes your headlights. This is because your car battery is going to die at some point.

Your headlights will be less bright and less powerful if you notice this. Because the lights aren’t as bright, this could be dangerous. It also shows that your car battery is almost dead.

#5. Noticing A Clicking Sound Whenever You Turn The Key

There is a part of your car that sends a current signal when you put your key in the ignition and turn it. This part is called the starter solenoid, and it helps start the car.

However, a bad battery might not be able to do its job, and the electrical current that will be sent to the starter will be weaker.

Meaning that when the starter doesn’t have enough or enough power from your car battery, it will make a noise.

#6. Unpleasant Smell

When you open the hood of your car, you might smell something that smells like rotten eggs. This could be a sign that your car battery has leaked. When there is a gas leak in a battery, it can cause damage to the battery or shorts inside.

#7. Slow Crank

Many drivers have become used to the sounds their cars make. If you turn the key and your engine doesn’t start right away, your battery is already dead.

How Many Years Does A BMW Last?

BMW cars can last for about 200,000 to 250,000 miles with proper care.

The electric windows, the coolant system, and the battery should be replaced as the car gets older. Even though it gets regular maintenance, these things should be replaced as the car gets older.

So How Many Years Does A BMW I3 Battery Last?

BMW once said that their batteries are designed to last for as long as 15 years and more.

In addition, they say that the battery in the BMW i3 must be at least 70% full after about 8 years or 100,000 miles of use.


There are times when your car’s battery is dying, but having a completely dead battery will be very dangerous to you and your family!

So if you see any of the above symptoms, get a new battery right away before it’s too late!

To get the battery or to get a free battery test, just go to the store near you.