As the world’s most valuable automaker, Tesla frequently captures headlines for its innovation and leadership in the production of electric vehicles. With a newly revised Model 3 and all-new Cybertruck hitting the roads, the brand continues to refresh and grow its lineup. As electric vehicles, Teslas have a different ownership experience than their gasoline-powered counterparts. EVs use a fraction of the parts required to power an internal combustion engine vehicle, making the battery the most critical component. Thus, it is important to understand Tesla battery replacement frequency and cost.
Before we get to a replacement, let’s talk about the basics. As you may know, gasoline-powered cars have lead-acid batteries, while EVs use lithium-ion battery packs. These are the same batteries you can find in your cellphone or laptop. Compared to regular car batteries, these have greater energy density and tend to hold their charge longer. They are also comprised of many individual cells rather than one massive unit.
The term kWh or kilowatt-hour refers to an electric car’s battery capacity. The more kWh your vehicle has, the longer you can drive around in your ride. So, think of the kWh rating as picking a gas tank size when you choose an EV.
While the kWh rating helps understand how far your vehicle can go, it doesn’t give an idea about how long your battery will last.
Generally, electric vehicle batteries last 10-20 years, but some factors may reduce their lifespan. For instance, batteries may degrade faster in hotter climates as heat does not pair well with EVs. Additionally, charging the battery at a Level 3 station overheats it as the process is too quick. All this negatively affects performance and service life.
But if you want a rough idea of how Tesla batteries degrade, statistics can help. For instance, data collected by NimbleFins from owners shows that all models lose about 1% of range yearly. This means you should be able to charge the battery to 90% capacity after ten years.
Like every other EV sold in the US, Teslas have a substantial battery warranty. However, the duration is model-dependent. Warranty coverage is measured in mileage or time, whichever comes first.
During this period, Tesla will address the vehicle’s battery if it loses 70% of its original capacity. For instance, if the range was originally 400 miles and fell to 250 miles at 6 years and 80,000 miles, then Tesla would repair the vehicle so the range is returned to at least 280 miles (70% of the original battery range). The warranty also applies to used Tesla models under the same mileage and year duration.
Proper temperature management and other preventative measures increase the life expectancy of batteries from Tesla and other manufacturers.
As mentioned, heat directly correlates with your battery’s lifespan. The same goes for cold, but it does not reduce life expectancy, just the range, and performance. All EVs work optimally at 70 degrees Fahrenheit, and because of that, manufacturers started equipping the vehicles with thermal management systems. Their complexity depends on the model and brand, but usually, liquid cooling is involved. It helps to keep the temperature at an acceptable level.
Whenever you replenish the charge, your battery slowly degrades with each cycle. While it is normal for an iPhone to undergo this process often, car owners expect to get more out of their rides than four or five years.
Thus, driver behavior is critical to preserving the battery. It is recommended to charge EVs only when needed to maintain a mid-level charge. For instance, regularly keeping a 20% to 90% charge in your day-to-day commute is better than letting the battery deplete to 0 or constantly charging it to 100%. Either of these behaviors will strain the battery and charging to full should be saved for longer journeys where it is necessary.
Considering EV batteries last 10 to 20 years, you hopefully won’t need to replace the battery. However, if you do need to replace the battery and are outside of Tesla’s warranty period, here are a few price examples, including labor:
No matter the model or manufacturer, all EV batteries last for 10-20 years. They gradually lose capacity, with some factors speeding things up, but you shouldn’t be too concerned. However, if you reach a point where a replacement will be necessary, the procedure will cost a considerable amount of money without insurance.
To slow down battery degradation, avoid fast charging and ensure your car doesn’t heat up in the sun. You can’t fully prevent it, but buying a year or two of service life for your vehicle’s battery is a good idea.
Matt Yantakosol is a lifelong automotive enthusiast and former consultant focused on the consumer aspect of the industry. He has traveled to New York, Detroit, Chicago, L.A., Paris, Geneva, Frankfurt, and Tokyo Auto Shows to track and observe the newest industry innovations. In addition to JDPower.com, Matt's writing has appeared on Pcarmarket.com.
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