Tesla 12V Battery Replacement


If your Tesla 12V battery still has a warranty, it will replace it at no cost to you. If, on the other hand, your warranty has expired, you have a few choices, such as buying a new battery from approved retailers like Amazon.com, Mountain Pass Performance, or ohmmu.com. “Tesla 12V Battery Replacement”

These batteries are designed to last longer and offer better performance compared to the standard lead-acid battery. We will explore the process of replacing the 12V battery in a Tesla and discuss the different options available for replacement.

Tesla 12V Battery Types

Tesla typically uses a lead-acid battery for the 12V system in its vehicles, including the Model S, Model 3, Model X, and Model Y. The lead-acid battery is a conventional and reliable choice for supplying power to the auxiliary systems in the car, such as lights, infotainment, and other electronic components. However, it’s worth noting that the field of automotive technology is dynamic, and Tesla, being a company at the forefront of innovation, may explore different battery technologies in the future.

As of my last knowledge update in January 2022, lead-acid batteries have been commonly used for the 12V systems in Tesla vehicles. It’s advisable to check with Tesla or their latest documentation for any updates on the battery types used in their vehicles.

Tesla 12V Battery Size

As of my last knowledge update in January 2022, Tesla’s 12V battery size is commonly reported to be a Group 48 battery. Group 48 is a standard battery size classification, and it specifies the physical dimensions of the battery, such as length, width, and height. Keep in mind that specific battery sizes can vary by model and production year, so it’s always a good idea to check your vehicle’s manual or consult with Tesla directly for the most accurate and up-to-date information regarding the 12V battery size in your particular Tesla model. Automotive technologies may evolve, and manufacturers may make changes over time, so the latest information is the most reliable source for details about your Tesla’s 12V battery size.

Step-by-step Guide To Replacing Your Tesla 12v Battery

Replacing the 12V battery in your Tesla is a straightforward process that you can do yourself. With a few simple steps, you can have your battery replaced and get back on the road in no time. In this guide, we will walk you through each step, ensuring a smooth and hassle-free battery replacement process. So let’s get started!

Roll Down Windows

The first step in replacing your Tesla 12V battery is to roll down the windows. This will ensure proper ventilation during the replacement process.

Remove Back Seat

To access the battery, you’ll need to remove the back seat. Start by lifting the bottom seat cushion and pulling it forward to release it from its hooks. Then, lift the seat back and remove it from the vehicle.

Remove the Plastic Trim Around the washer Reservoir.

Next, you’ll need to remove the plastic trim around the washer fluid reservoir. Carefully pry off the trim using a plastic trim removal tool or a flathead screwdriver.

Remove the battery Hold Down the Bracket

Once the trim is removed, you can access the battery hold-down bracket. Use a socket wrench to remove the nuts and bolts securing the bracket in place. Save the bracket for subsequent reinstallation.

Remove the metal bracket.

After removing the battery hold-down bracket, you’ll need to remove the metal bracket that holds the battery in place. Use a socket wrench to remove the bolts and gently lift the bracket out of the vehicle.

Release Vent Tube

Before removing the old battery, make sure to release the vent tube. This will prevent any pressure buildup during the battery removal process. Cut the vent tube’s connection to the battery.

Install a battery bracket

With the old battery removed, it’s time to install the new battery. Start by placing the battery into the vehicle and securing it with the metal bracket. Use a socket wrench to tighten the bolts and ensure a secure fit.

Install Air Filter Ducting

After installing the battery, you’ll need to reassemble the air filter ducting. Align the ducting with the intake and secure it in place using the provided clips or screws.

Close Trunk And Power Cycle

Finally, close the trunk and power cycle the vehicle. This will allow the new battery to initialize and ensure proper functionality. Once completed, your Tesla will be ready to hit the road with a fresh 12V battery!

Tesla 12v Battery Replacement Cost

Replacing the 12V battery in a Tesla is an essential but often overlooked aspect of maintenance, akin to changing the oil in a traditional vehicle. The cost of a Tesla 12V battery replacement reflects the brand’s commitment to cutting-edge technology and high-performance components. While specific prices may vary, it’s essential to consider the longevity and efficiency that come with this investment.

Tesla’s 12V battery, despite its seemingly conventional role, plays a crucial role in powering various onboard systems, ensuring a seamless and reliable driving experience. As electric vehicles continue to revolutionize the automotive industry, the replacement cost for components like the 12V battery serves as a testament to the evolving nature of maintenance in a world transitioning from combustion engines to sustainable alternatives.

The cost of replacing the 12V battery in a Tesla can vary, typically falling within the range of $350 to $860. Factors influencing the cost include the specific model of the Tesla and where the replacement is carried out, whether at an official Tesla service center or a third-party repair facility.

Where To Buy A Replacement Tesla 12v Battery

Looking for a replacement Tesla 12V battery? You can find them at reputable online retailers like Ohmmu.com, Amazon.com, and Teslarati. These batteries are essential for optimal performance and can be easily replaced with step-by-step instructions available on Tesla’s official service website.

If you are in need of a replacement Tesla 12V battery, there are several reputable places where you can purchase one. It’s essential to have a reliable and high-quality battery to ensure the smooth operation of your Tesla. Below are some options to consider:


Offering a wide selection of Tesla 12V batteries, ohmmu.com is a trusted online retailer. They offer a battery priced at only $479.00 that comes with a 30-day return policy and is currently in stock.

Mountain Pass Performance

For those looking for a premium option, Mountain Pass Performance offers a Tesla 12V battery priced at $860.00. Their batteries are known for their durability and superior performance.


A popular online marketplace, Amazon.com, also offers a range of Tesla 12V batteries. You can find a battery priced at $499.00, making it a reliable and cost-effective option.

Reel Deal Ev

Reel Deal EV is another trusted retailer offering a Tesla 12V battery for $479.00. They also provide a helpful video tutorial on their website, guiding you through the replacement process.


Teslarati offers a Tesla 12V battery priced at $479.00. They often provide discounts, with their current offer giving you 10% off, bringing the price down to $538.

Tesla Accessories By Evannex

Known for its high-quality Tesla accessories, Tesla Accessories by Evannex also offers a Tesla 12V battery for $479.00. Tesla enthusiasts worldwide trust their products.

ECS Tuning

ECS Tuning provides a Tesla 12V battery priced at $459.00. With their commitment to quality, you can trust that their battery will meet your needs.


For those looking for a premium option, ducatism.com offers a Tesla 12V battery priced at $645.00. They prioritize performance and reliability in their products.


eBay is a popular marketplace for various products, including Tesla 12V batteries. You can find a range of options, some priced as low as $350.00.

Regardless of where you choose to purchase your replacement Tesla 12V battery, it’s crucial to ensure that it’s compatible with your specific Tesla model. Always consult with a professional or refer to the manufacturer’s guidelines to make an informed decision.

Tesla Model 3 12V Battery Replacement

When it comes to the Tesla Model 3, the 12V battery replacement is like giving a reliable companion a fresh set of wings. Much like the heartbeat of the car’s intricate electronic system, the 12V battery plays a pivotal role in powering essential components such as lights, infotainment, and other auxiliary systems. Replacing the 12V battery is akin to a rejuvenating spa day for your Tesla, ensuring that every journey is embarked upon with a surge of vitality.

It’s not just a routine maintenance task; it’s a thoughtful investment in the longevity of the electric symphony that is the Tesla Model 3. As the new 12V battery takes its place, it’s as if the car is being gifted a fresh breath of energy, ready to propel its driver into the future of sustainable and exhilarating transportation.

Tesla 12v Battery Replacement Model Y

Embarking on a Tesla Model Y 12V battery replacement is like orchestrating a harmonious upgrade for the heartbeat of innovation. As the 12V battery serves as the nerve center for auxiliary functions within the Model Y, swapping it out is not merely a maintenance routine but a transformative act. The process can be likened to providing a cutting-edge power source to a sophisticated electronic brain, ensuring that every detail of the driving experience remains seamless and efficient.

It’s a subtle yet significant ritual that speaks to Tesla’s commitment to excellence in sustainable transportation. The Model Y, with its sleek design and forward-thinking technology, deserves nothing less than the precision and care involved in a 12V battery replacement, setting the stage for countless electric adventures to come.

Tesla Model S 12V Battery Replacement

In the realm of Tesla’s groundbreaking technology, the Model S 12V battery replacement is a meticulous dance of innovation and reliability. Much like changing the core of a powerful cosmic engine, swapping out the 12V battery is a gesture that ensures the symphony of electric brilliance continues seamlessly. The Model S, with its sleek lines and futuristic prowess, depends on the 12V battery to power essential components, making the replacement not just a routine task but a crucial act of maintenance artistry.

It’s refreshing the life force of the vehicle, granting it renewed vigor for the road ahead. As the new 12V battery takes its place, it’s as if the Model S is being fortified for another chapter of emissions-free, exhilarating travel—a testament to Tesla’s commitment to pushing the boundaries of sustainable and high-performance driving.

Tesla 12v Battery Warranty

Within the realm of Tesla’s commitment to pioneering excellence, the 12V battery warranty emerges as a testament to the brand’s unwavering confidence in its technological prowess. Tesla, always at the forefront of innovation, stands firmly behind the reliability of its 12V batteries. The warranty serves as a shield of assurance, enveloping drivers in the confidence that their electric journey is safeguarded by the meticulous engineering synonymous with the Tesla name.

It’s more than a guarantee; it’s a pledge to accompany drivers on their sustainable adventures, promising a seamless and electrifying experience. This warranty not only reflects Tesla’s dedication to customer satisfaction but also underscores their confidence in the longevity and resilience of the cutting-edge technology embedded in every aspect of their electric vehicles, setting a new standard in the automotive landscape.

Frequently Asked Questions For Tesla 12v Battery Replacement

How Much Does It Cost To Replace A Tesla 12V Battery?

The cost to replace a Tesla 12V battery can range from $350 to $860. It’s recommended to check prices from various sources like Ohmu.com, Amazon, and Teslarati for the best deal. Additionally, Tesla provides free battery replacements within the warranty period.

What Happens If the 12V Battery Dies in a Tesla?

If the 12V battery dies in a Tesla, the company will replace it for free if the car is still under warranty. They offer mobile service, so there is no need to go to a shop. Alternatively, you can replace the battery yourself with a lithium replacement option that lasts longer.

When Should I Replace My Tesla 12V Battery?

Replace your Tesla 12V battery if it is no longer functioning correctly or if it has reached the end of its lifespan. Tesla typically replaces these batteries for free while they are still under warranty. Consider upgrading to a longer-lasting lithium battery for improved performance.

Can I Buy A 12v Battery From Tesla Service Center?

No, you cannot buy a 12V battery from the Tesla Service Center. They provide mobile and free replacement if your car is still under warranty. Other than that, you can find replacement options from third-party sellers.

How Long Does A Tesla 12v Battery Last?

The Tesla 12V battery usually lasts around 3-5 years, depending on usage and conditions.


Replacing the 12V battery in your Tesla is an essential maintenance task that can prolong the lifespan and performance of your vehicle by following the step-by-step instructions provided by Tesla or reputable sources, such as Ohmmu. Com and Teslarati, you can successfully replace the battery yourself.

Investing in a high-quality lithium battery, like the ones recommended by Ohmmu and Teslarati, can provide longer-lasting power for your Tesla. Feel free to take action and ensure the smooth functioning of your Tesla by replacing the 12V battery when needed.

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