Why Do Teslas Make a Popping Noise While Charging?


Why Do Teslas Make a Popping Noise While Charging?

Whether you’re a new Tesla owner or a long-time Tesla owner, you have probably heard a “popping” noise coming from the floor of your Tesla before. This “popping” sound is typically heard when charging or when it’s cold outside in general.

So, why does a Tesla make a popping noise while charging? It is perfectly normal to hear a “popping” noise while charging a Tesla. The “popping” sound is caused by the batteries heating up and expanding quickly during charging. This “popping” noise does not cause any damage to the vehicle or battery.

Now that we’ve covered the short answer, let’s dive a little deeper into this phenomenon.

What Is The Tesla Popping Noise While Charging?

Have you ever put a cookie sheet is the oven and heard it “pop” or “flex” within a few minutes? This is the same thing that happens to your Tesla’s batteries while charging.

Just like all batteries, the batteries in your Tesla heat up while charging. This is especially true when using a Supercharger to charge your Tesla because it charges, and therefore heats up, the batteries the fastest.

  • A standard 120V home outlet will charge your Tesla at a rate of 5 miles per hour of charge.
  • A upgraded 240V home outlet will charge your Tesla at a rate of 40 miles per hour of charge.
  • A Supercharger will charge your Tesla at a rate of up to 1000+ miles per hour of charge.

When Does A Tesla Make Popping Noise?

Since the “popping” noise is caused by the batteries expanding while heating up quickly, there are a few situations that you can expect to hear the noise.

The most common situation you will hear a Tesla make popping noise is while Supercharging.

Since Supercharging a Tesla is the fastest way to charge a Tesla, it also means it causes the batteries to heat up the fastest compared to any other situation.

In short, you can expect to hear a “popping” noise anytime you are Supercharging a Tesla and it is perfectly normal.

A Tesla will also make a popping noise while charging at home.

Even when charging at home, whether with a 120V outlet or 240V outlet, Tesla batteries will still heat up from being charged.

The batteries will not be heating up nearly as fast as a Supercharger, but you can still expect to hear a “popping” sound while charging.

The 240V outlet is more likely to cause a “popping” noise, and the 120V outlet is the least likely, however the “popping” is perfectly normal in both situations and does not cause any damage.

If the weather gets colder, a Tesla will make “popping” noises more often.

Because the popping noise comes from the temperature difference between the batteries and the external temperature, the colder the weather is outside, the more likely you will hear “pops”.

What Causes Tesla Batteries To Heat Up?

Just like all batteries, Tesla batteries heat up any time there is a transfer of energy. This means any time the batteries are being charged, or using charge to power the car, they will heat up.

With that being said, any time you are using a Tesla, whether that is charging, driving, or even parked, the batteries are going to be heating up to some degree.

  • Charging will cause the batteries to heat up the most, especially Supercharging.
  • Driving will cause the batteries to heat up the second most, especially aggressive driving.
  • Parking will cause the batteries to heat up the least, especially if using climate control.

This means a Tesla can make a “popping” noise at any time, especially in cold weather, and it is perfectly normal without causing damage to the car.

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Greg

Hi, I'm Greg. My daily driver is a Tesla Model 3 Performance. I've learned a ton about Teslas from hands-on experience and this is the site where I share everything I've learned.

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