Study finds that using Superchargers frequently doesn't cause a significant difference on battery life
Recurrent
It has long been believed in the industry that frequent DC fast charging for your Tesla or any EV is terrible for battery longevity. However, a new report from Recurrent, which analyzed data from over 12,500 Tesla vehicles in the US, clearly shows little to no difference in battery degradation between frequent and rare fast charging.
Recurrent studied fast charging on thousands of Tesla vehicles in the US to learn if the software and safety mechanisms in the battery management system (BMS) prevent damage to the battery. With Labor Day travel coming up, this is the perfect time to share what is fact and fiction when it comes to fast charging.
The Recurrent Study: A Comprehensive Analysis
Your electric vehicle battery uses direct current (DC) power. However, the electricity from the grid (or from an outlet) is alternating current (AC). In-home charging, which is AC charging, the car’s onboard charger converts the AC electricity to DC and then sends it to the battery. The onboard charger has a built-in limit on how quickly it can do this. The maximum speed is usually around 11 kW, so AC charging can generally add 20-40 miles per hour, depending on the vehicle.
On the other hand, DC charging happens when the conversion to DC energy happens outside of the car. This is almost exclusively reserved for public charging stations and Tesla Superchargers. Since the electricity going into the car bypasses the onboard converter, it can refill the battery much faster. One of the biggest concerns with fast charging is that it can, theoretically, damage the battery by pushing too much energy into the battery too quickly. This would lead to irreparable, long-term range loss.
Key Findings: No Significant Impact on Battery Degradation
Will fast charging hurt my EV battery? The short answer is that occasional fast charging is fine. The study compared cars that fast charge at least 90% of the time to cars that fast charge less than 10% of the time. In other words, people who almost exclusively fast charge their car and people who rarely fast charge.
The results show no statistically significant difference in range degradation between Teslas that fast charge more than 90% of the time and those that fast charge less than 10% of the time.
Initial analysis by the team at Recurrent suggests that the study findings can be applied across Tesla models and other EV manufacturers. However, detailed research is being conducted on other popular vehicles Recurrent supports. In short, the robust thermal, voltage, and battery management systems that EV makers have invested in protect their batteries from damage with routine fast charger use.
Tesla specifically does an excellent job regulating power to and from the battery based on the temperature of the battery pack, its state of charge (charge percentage), and other environmental factors such as external temperature.
When Fast Charging Can Cause Damage
When is fast charging more likely to cause damage? There are several times when fast charging may impact your EV battery more. Avoid fast charging in extreme heat without preconditioning your battery. Preconditioning is when the car’s thermal management system pre-cools or heats the battery to accept a higher charge rate.
Typically, the battery will be preconditioned if you set your car’s navigation to a fast charge station. Similarly, precondition the battery before fast charging in extreme cold. Driving a bit before fast charging is often enough to warm up the battery or get to the fast charger using your car’s navigation. Avoid fast charging your EV at very low states or very high states of charge since battery resistance will be higher.
Overall, this study adds to the growing body of knowledge regarding EV battery longevity and charging practices. Nonetheless, being mindful of battery health during extreme temperatures is still encouraged.
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Tesla has started offering Enhanced Autopilot (EAP) in China via a subscription starting at 699 yuan per month — equivalent to about $98.5 USD. It’s the first time Tesla owners in the country will have access to features such as auto lane change, Autopark, Smart Summon, and others.
It’s not clear whether Tesla will begin to offer EAP as a subscription in other regions as well.
The move is seen as the first step towards the expansion of Tesla’s full self driving to China as other markets outside North America wait for the arrival of the FSD software. Yesterday, Tesla chief executive Elon Musk said the version 12 is “ready for supervised FSD in LHD countries” while RHD countries such as Australia, UK or Japan “will take a bit longer”.
FSD in China
China giant Baidu announced last Monday that it will provide all Tesla vehicles in China its latest version of Baidu Maps starting in May.
This week, Tesla celebrated its 10th anniversary in the Chinese Market where it has a total of 1.7 million owners — Tesla’s second largest market. Elon Musk recently tweeted that Tesla may soon offer full self-driving in China by saying “It may be possible very soon”.
FSD in Europe
On Friday, the Senior Advisor of the Swedish Transport Transportation, Rikard Fredriksson, shared on LinkedIn that he had been demoed the FSD technology in Germany with a Tesla employee. The moment marks the first official use of the assisted driving software in Europe.
Impressive smooth and natural driving
LinkedIn Post by Rikard Fredriksson after the FSD Demo in Germany
In the recent earnings call, Elon Musk said Tesla has over 300 million miles that has been driven with FSD v12 since it was launched just last month. He added that it's becoming “very clear that the vision-based approach with end-to-end neural networks is the right solution for scalable autonomy”.
Tesla said it has been investing in the hardware and software ecosystems necessary to achieve vehicle autonomy and a ride-hailing service. The company is confident that it can establish a scalable and profitable autonomous driving business by employing a vision-only architecture.
Tesla has recently reduced the pricing of its “Full Self-Driving” software in the US, from $12,000 to $8,000, and in Canada from CA$16,000 to $11,000. This price reduction follows a 50% cut in the subscription fee announced earlier this month.
Electric vehicle maker Rivian Automotive has announced that it will open up its Rivian Adventure Network (RAN) chargers to Teslas and other EVs later this year.
The Rivian Adventure Network is a comprehensive network of fast-charging sites very similar to Tesla’s own Superchargers. According to Rivian, the Rivian Adventure Network is powered by 100% renewable energy.
New Rivian Chargers
In a post on X, Rivian added that it would introduce new chargers with a tap-to-pay experience to support “a wide range of EVs across a variety of battery voltages.”
Expanding RAN chargers and introducing new tap-to-pay chargers is a clear indication that Rivian is trying to increase customer convenience while ratcheting up its brand value.
All Rivian vehicles and most other EVs still use the CCS connector until they transition to NACS in the next few years. These new chargers will likely include a combination of NACS and CCS connectors to support Rivian’s current and future vehicles that will come equipped with an NACS port.
Charging a Tesla at a Rivian Charge
With over 50,000 Supercharger stalls, Tesla operates the biggest fast-charging network in the world. And 25,000 of these are located in the United States alone. The simplicity of charging at a Supercharger is part of the appeal. Tesla takes care of everything from initiating charging to billing. It ends up being no different than charging at home.
Tesla’s Supercharger network has a stellar reputation, mostly due to its high charging speed and reliability, which Tesla closely monitors in real-time. Major electric vehicle makers will start switching to NACS in the next few years and considering that the Supercharger network is highly trusted, one can see more non-Tesla EVs lining up at Superchargers soon. Giving Tesla owners more choice of where to charge may be crucial to combat congestion.
Rivian currently has over 400 charging stalls across 22 states but plans to expand to more than 600 chargers.
Making Rivian Chargers Just as Simple
While Rivian plans to add a tap-to-pay terminal to its new chargers, it’ll be difficult to beat the convenience of Superchargers for Tesla owners. After Rivian opens up its chargers to other EVs, Tesla owners would need to buy and use CCS to NACS adapters to charge at these networks, although not every Tesla supports the adapter. You can check if your vehicle supports the Tesla adapter.
To simplify the process for Tesla owners, Tesla would also need to interface with Rivian’s chargers to make billing as seamless as it is on its own Supercharger network.
Rivians Charging at Superchargers
Rivian has already begun shipping its customers NACS-to-CCS adapters to charge their vehicles at Tesla Supercharger.
Rivian officially got access to Tesla’s Supercharger network in March 2024. For now, only two companies–Ford and Rivian–have received access to charge at more than 15,000 Tesla Supercharger stalls. More companies like GM, Polestar, and Volvo will get access the following spring.
But Rivian is not stopping at NACS-to-CCS connectors. The Tesla rival plans to switch completely to the NACS port in 2025, at which point they’ll provide their owners a CCS to NACS adapter.
TeslaFi logs your drives and charging sessions, letting you keep a log of your vehice's activity. We highly recommend checking them out if you use your car for business trips and would like to keep track of reimbursements, if you like to see how much you spend on charging or if you just love statistics. Visit their site and see everything they have to offer!
Tesla Android Project enables you to run Android apps in your Tesla. The platform is Open Source and you can deploy it on your own Raspberry Pi 4. Consider supporting the initiative by donating or purchasing the Compute Module 4 Bundle that delivers the best experience. Get $20 off by using the code: NotATeslaApp
The official Tesla app only notifies you if your car is broken into. By installing Sentry Pro on your phone, you will be notified for all Sentry Mode events. Stay connected and avoid potential surprises by receiving notifications. Stop constantly checking the cameras to ensure safety. Check only when necessary, save battery and get peace of mind. Get a 7 day free trial here!
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