Even though Teslas are very efficient, they still need a 12V battery to power things like the lights, windows, doors, and displays. The most critical duty you can do for your battery is to keep it working. Then what about the Tesla 12v battery replacement?

If you want to change the 12V battery in your Tesla Model 3, it would be easiest and most handy to call Tesla’s service center or mobile service. By hiring a repair certified by Tesla, you can change your battery quickly and without risking any damage to your car.


How long will the Tesla 12V battery last?

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Range anxiety is a primary concern for those considering purchasing an electric vehicle. The technology utilized in electric vehicles has undergone significant advancements since the inception of the first EV.

Tesla is now the industry leader in electric automobiles, with most models claiming a range of 300–400 miles. The longevity of a Tesla battery is a common inquiry among potential buyers and EV enthusiasts. The outcome is subject to certain factors.

Tesla vehicles are known for their impressive range, with owners typically enjoying at least 267 miles per charge of their car’s battery. Elon Musk, CEO of Tesla, has said that the batteries in a Tesla are built to last for 1,500 battery cycles or simply 300,000 to 500,000 miles. 

Reports say that Tesla is making a battery that can last one million miles. However, the notion of batteries that can last a million miles will remain unverified until their invention. Your car’s battery may need to be changed sometime during its lifetime.


The batteries installed in Tesla vehicles are intended to have an extended shelf life of 300,000 to 500,000 km, the same as 1,500 battery cycles. It would take anywhere from 22 years to 37 years if you drove 40 miles every day.

When Should I Replace My 12V Tesla Battery?

tesla 12v battery replacement

As part of your Tesla’s regular upkeep, check the battery’s health. It should be changed when the battery has lost 20% of its power. By doing this, you can keep getting the same great speed and driving from your Tesla that you’re used to. Customers of Tesla say that their batteries only lose 5% of their power after going 100,000 miles.

Elon Musk, CEO of Tesla, stated in a post published not too long ago that the battery has a lifespan of 300,000 and 500,000 kilometers. The lifespan of a battery ranges from 21 to 35 years if it is used for driving an average of 273 miles every week. If you want to stop buying a new battery soon, you must recheck and replace the battery in your Tesla. Alternatively, you may get a new electric automobile. You will need to recheck and replace the battery in your Tesla or buy a new electric car before you need a new battery if you want.

Does Tesla replace the 12V battery for free?

Every brand-new Tesla comes with a limited vehicle warranty, which extends to cover the 12-volt battery. For the first 50,000 miles driven or eight years, whichever comes first, Tesla will pay the cost of your battery replacement. Therefore, you should return that child to the dealership since she is guaranteed! An attempt to find a better deal for your auto insurance.

How much does it cost/require to replace the 12V battery in a Tesla?

tesla 12v battery replacement

Throughout the company’s existence, Tesla autos have utilized several distinct lithium-ion battery architectures in their construction. Determining the pricing range might be difficult because there are so few documented instances of battery replacements. There is no standard rate for labor associated with battery replacement, and the battery cost can range from $12,000 to $15,000. To refresh your memory, the average battery replacement cost is around $22,000.

Can I replace the 12V battery myself on the Tesla?

If you show the expertise and skills needed, purchase a 12-volt battery directly from Tesla and perform the installation yourself. Confidence in your abilities is key to completing this task. For the successful execution of the procedure, it is imperative to turn off the motor vehicle completely. This entails the removal of the high-voltage battery.

Step Guide to Tesla 12v Battery Replacement

Here’s what to do once you’ve gathered your supplies:

  1. Turn off your Model S and roll down the windows.
  2. The high voltage must be turned off. In order to prevent electrocution, the high voltage must be turned off. You’ll easily access the high-voltage cable by folding down the rear seats. The black plastic cover must be removed. A strong black wire with a silvery end is what you’ll find. To turn off the high voltage, pull this cord.
  3. Pull up the hood. Once the door is unlocked, the plastic protection over the windshield may be removed.
  4. The air vent on the passenger side of the automobile may be accessed once the plastic cover has been removed. Take off the screws holding the battery brackets in place. First, remove the bolt on the driver’s side, then the bolt on the passenger’s side.
  5. Take out the minus plug. If you want to keep things from sparking, disconnect the negative (black) terminal first.
  6. Join the pieces together. Once the new battery is installed, the central bracket must be fastened to keep it in place.
  7. Reverse the order and connect the positive terminal first, followed by the negative.
  8. Put the battery bolts back on both the driver’s and passenger’s sides.
  9. The plastic cover and vent should be reattached, and reconnect the connection to restore high voltage.

How to Take Care of your tesla Battery

tesla 12v battery replacement

People who have been using smartphones for a long time often notice the battery life worsening, meaning they need to charge their phones more often. In the same way, this also happens to the batteries in electric cars.

Even though it may be cheap to change the lithium-ion batteries in your phone, you can’t say the same about Tesla’s batteries. The cost of a Tesla battery replacement can be steep, leaving many owners financially burdened.

By understanding the proper maintenance techniques for your batteries, you can save significant money over time. Suppose you’re a proud owner of a Tesla model. Here, we have explained to be interested in learning how to maintain your vehicle’s battery capacity and extend the time between charge cycles. 


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