Why Do My Golf Car Batteries Smell Like Rotten Eggs? (Gas, Burning, Sulfur)

It’s not a good feeling when you go to start your golf car and it smells like rotten eggs. Why do my golf car batteries smell like rotten eggs? Why does this happen, and more importantly, how can you fix it?

In this blog post, we will discuss the cause of this problem and how to take care of it. We’ll also provide some tips on how to keep your golf car batteries in good condition so that this doesn’t happen again.

The cause of this problem is sulfuric acid. This corrosive substance is used in lead-acid batteries to help them produce power. When the battery starts to wear down, it can leak out of the cells and mix with the water that’s used to cool the battery. This creates hydrogen sulfide (H2S) gas, which smells like rotten eggs.

If your golf car batteries start to smell like rotten eggs, the first thing you should do is check the water level. If it’s low, add some water to the battery. This will help dilute the sulfuric acid and get rid of the bad odor.

You should also check for any leaks in the battery casing. If you find a leak, you’ll need to replace the battery.

Why Do My Golf Car Batteries Smell Like Rotten Eggs?

The smell of rotten eggs is caused by the release of hydrogen sulfide gas. When you charge a battery, sulfuric acid reacts with the lead plates in the battery to create this gas. While it’s not harmful in small doses, too much hydrogen sulfide can cause nausea and vomiting.

If you’re experiencing this smell when charging your golf car battery, there are a few things you can do to fix the problem.

First, make sure that the battery is properly sealed and that there are no cracks or leaks. If it is leaking, replace the battery immediately.

You can also try adding a water sealant to the battery terminals to help keep the gas from escaping. If none of these solutions work, it may be time to replace your battery.

Is the Rotten Egg Smell from a Golf Car Battery Dangerous?

No, the smell from a golf car battery is not dangerous. It just smells bad! The rotten egg smell is caused by sulfuric acid and it can be corrosive to metals. If you come in contact with sulfuric acid, it will cause skin irritation or burns. Always use caution when working around a golf car battery.

If you are experiencing a rotten egg smell from your golf car battery, there is most likely something wrong with the battery.

The acid may be leaking out of the battery or the sulfuric oxide may be building upon the battery terminals. In either case, it is important to fix the problem as soon as possible to prevent any further damage.

Is Hydrogen Sulfide Gas Harmful?

The hydrogen sulfide gas that is emitted from golf car batteries can be harmful if you are exposed to it in high concentrations. It can cause difficulty breathing, headaches, and even unconsciousness. If you experience any of these symptoms after being around a golf cart battery, seek medical attention immediately.

However, in low concentrations, hydrogen sulfide gas is not considered harmful. It has a strong smell that can be easily recognized and it will cause you to quickly move away from the battery.

So, why does this gas smell like rotten eggs? Well, that’s because hydrogen sulfide is made of sulfur and water. And when these two chemicals combine, they form the gas we know as hydrogen sulfide.

How Do I Get Rid of the Awful Smell?

The easiest way to get rid of the smell is to allow fresh air to circulate around the battery. This will help dilute the gas and get rid of the bad odor.

There are a few things that you can do to get rid of the smell and prevent it from happening in the first place.

First, make sure that your golf car is parked in an open area where air can circulate around it. If possible, park it outside or in a garage with the door open. You can also try airing out the battery box by removing the battery cover and blowing air into the battery compartment.

If you have an electric golf car, you can also try using a fan to blow air onto the batteries.

Finally, you can sprinkle baking soda litter over the top of the batteries to help absorb any gas that may be present. Be sure to clean up the baking soda litter when you’re done.

Will My Golf Car’s Batteries Always Smell Rotten Eggs?

No. New golf car batteries produce more hydrogen sulfide gas during the first few charging cycles, but it quickly dissipates. If you have an older set of golf car batteries and they start to smell like rotten eggs, then it is likely time for a new set.

If you have an older set of golf car batteries and they start to smell like rotten eggs, it is likely time for a new set. You can give your batteries an “equalization charge” to produce more hydrogen sulfide gas, but this is not necessary and will be discussed in another article.

Why Do My Golf Cart Batteries Smell Like Burning?

The initial step in trying to figure out the reason behind a noticeable burning smell from a golf cart is checking on the batteries.

First of all, you’ll need to ensure that there’s actually a problem with them and determine if this is really what’s causing the distinctive odor.

Once you’re able to confirm that your car battery is indeed emitting the smell, then it’s time to move on to determining the cause.

1. Lacking Water Level

One of the most common causes is that the water levels are too low, which could be caused by an improper sealant or dirt in the compartment. As a result, you should always check this first since this problem will lead to lots of issues.

2. Failing Regulator

Another possible reason is a failing regulator, which could contribute to the cells becoming dry and overcharging each other.

Lacking water doesn’t only mean that there’s not enough in there; it also means that the electrolytes are gone (which produces the distinctive smell).

Therefore, if you can clearly detect that the water levels are okay, but there’s still this burning smell, then the regulator might be faulty.

3. Corroded or Faulty Wiring

Finally, since golf cart batteries are within a closed compartment (which has vents), problems with corrosion can occur. This includes wiring which should protect against short circuits; however, you’ll notice the smell of burning at this point.

4. Other Causes

The smell from sulfation is definitely an issue, but it’s more complicated to detect since there are some other reasons for playing a role as well. If you’re not entirely sure if that’s what’s causing the problem or just want to be on the safe side, then you might want to check with a professional.

How To Fix It?

The procedure for fixing this issue is fairly straightforward and easy, which includes:

Adding distilled water (only distilled water should be used) Checking the electrolyte levels Replacing the battery If these don’t work and it’s still giving off an unpleasant smell, then it’s time to contact a professional who can help you properly diagnose any further issues.

Why Your Golf Cart Smells Like Sulfur?

Golf cart batteries contain many lead plates, which generate sulfate when they are charging. When the battery discharges, the sulfate is converted back to lead and sulfuric acid.

Batteries, in general, emit a sulfur smell. This is because batteries contain lead and sulfuric acid to produce electricity.

If your cart smells like rotten eggs or even worse, it means that there may be something wrong with the battery itself.

In most cases, this could be due to an old or low water level in the electrolyte of the battery. The sulfur smell is the result of the electrolysis of water inside the cells.

Why Does Your Golf Cart Smell Like Gas?

It is important to note that this smell is not the same as your car, it won’t produce black smoke and does not come from diesel fuel. This stink is the result of raw hydrogen sulfide evaporating from the sulfuric acid inside your battery.

First, there are several types of smells that may come from your battery. There is the rotten egg smell that comes from sulfuric acid, a metallic odor due to corrosion at the terminals, and even chlorine gas which means your battery cable connections have started to melt.

You should also note that these three odors don’t occur all at once so if you are smelling more than one, there are multiple problems.

The first thing to do is identify the type of smell coming from your golf cart batteries. Once you have done that, you should be able to treat your issue or call your local golf cart mechanic for further help.


In conclusion, there are many reasons why your golf cart batteries can smell like rotten eggs. The solution is rather simple, but it’s important to know what the problem is in order to solve it quickly.

If left untreated for too long, your batteries may suffer permanent damages which will require replacement later on down the road. If you keep a close eye on your batteries and replace them when necessary, you should be able to avoid these problems from happening in the first place.