Tesla research group shows that new battery could last up to 100 years

May 28, 2022

By Alex Jones

Teslas, in the future, may have a century of battery life if Tesla’s research group in Canada can turn their recent research paper into reality. Dr. Jeff Dahn and his team at Dalhousie University in Halifax, Canada have been working exclusively with Tesla since 2015 to develop new Li-ion batteries.

Tesla described the partnership in 2015 as, “Jeff Dahn is helping to develop Li-ion batteries with improved lifetime, increased energy density, and lower cost. This collaboration is a natural fit.” While it remains to be seen if the research team’s dream will be developed into a working production battery, the partnership appears to have paid off.

Tesla recently renewed their contract with Dahn’s team, ensuring a partnership through 2026. In addition, Dahn has added Dr. Chongyin Yang and Dr. Michael Metzger to his team in order to further enhance the research group’s ability to file for battery patents on behalf of Tesla. Dr. Yang is actually Tesla Canada’s Research Chair. He’s worked in energy storage and conversion for over thirteen years, having come from the University of Maryland in the United States. Dr. Metzger, a former Bosch scientist, brings an interesting background in battery design with an emphasis in desalination uses.

The team recently wrote a research paper called “Li[Ni0.5Mn0.3Co0.2]O2 as a Superior Alternative to LiFePO4 for Long-Lived Low Voltage Li-Ion Cells” in the Journal of the Electrochemical Society. The paper focuses on using a nickel-based battery (NMC) to allow for a greater number of charging cycles. The researchers specifically state, “NMC cells, particularly those balanced and charged to 3.8 V, show better coulombic efficiency, less capacity fade and higher energy density compared to LFP cells and are projected to yield lifetimes approaching a century at 25 °C.”

Maintaining a temperature of 25 °C (77 °F) may be unrealistic in real-world conditions. But, Teslas do have the best battery thermal management systems currently available on the market. It has long been known that relatively stable temperatures result in a prolonged battery life expectancy.

Many prospective EV owners wonder about the life expectancy of Tesla batteries, noting that the replacement cost for a car’s battery pack can range from $12,000 - $22,000. There isn’t a consistent answer to the life expectancy question.

Current Tesla battery life can be affected by factors including temperature, discharge activity, Fast Charger use, and driving habits. It is believed that Tesla batteries typically last approximately 1,500 charge cycles. If Tesla’s research team can implement the new battery design in the future, Tesla battery life expectancy would indeed increase (becoming an heirloom for us to pass on to our children’s children.)

Tesla Q1 Update on Optimus, Batteries, and Tesla Energy

May 1, 2025

By Karan Singh

Not a Tesla App

The 2025 Q1 Earnings Call gave us the opportunity to learn about a lot of things, from Unsupervised FSD, to the Robotaxi program, to the update on the more affordable model. There was a lot of news to unpack, but there’s still more.

In this article, we’ll cover Tesla’s updates on Optimus, batteries, and Tesla Energy.

Optimus

Tesla has been working away on their humanoid robot and continues to make progress in software and hardware.

First, Tesla is preparing the Fremont factory for the Optimus pilot production line, which is scheduled for completion later this year. Once it is, wider deployments of Optimus for internal use within Tesla’s facilities are expected as well. Tesla aims to have several thousand Optimus units working in its North American factories by the end of the year once the pilot production line is operational.

Tesla’s goals for production remain extremely lofty - 1 million units per year by 2030. However, they could face some challenges when ramping production.

Key components like the shoulder actuators use specialized permanent and rare-earth magnets, which are currently sourced from China. Due to recent Chinese restrictions on the overseas sale of these magnets, Tesla is seeking an exemption or alternative suppliers. They have not yet looked into modifying the shoulder actuator but will likely do so if they cannot obtain the necessary materials.

Batteries

Batteries are another item that Tesla’s teams have been working on behind the scenes for years now. The second generation of the 4680 - the Cybercell - has been IRA-compliant for some time now. This means that the Cybertruck is eligible for the US Federal EV rebate.

Tesla also achieved the lowest cost-per-kWh of any of its cells with the 4680 battery - and it is potentially one of the cheapest cells being manufactured by any vehicle battery manufacturer at this point. With dry-cathode still being worked on, Tesla may be able to squeeze more optimizations and cost efficiencies from the 4680 cells.

Additionally, Tesla is progressing with its plans for lithium refining and cathode production in the US, both of which are scheduled to commence in 2025. While the company says they’re no longer supply-constrained for non-LFP vehicle batteries, on-shoring production and sourcing critical minerals from nations outside of China will be key.

LFP batteries continue to be supplied-constrained - namely for the Tesla Energy division. LFP batteries and their materials are sourced from China. Due to tariffs and limited exports, Tesla is can’t obtain enough and is considering potentially building an LFP production facility in North America.

Energy

Tesla’s energy division is still experiencing some of the highest growth of any of its divisions. Year over year, Tesla saw a 154% increase in energy storage deployments, including both Megapack and Powerwall - for a total of 10.4 GWh deployed in just Q1 2025. While deliveries in energy storage remain volatile due to the nature of Megapack installations, Tesla expects growth to continue rapidly in this segment.

Tesla also deployed 1GWh of Powerwall 3 residential storage this quarter, marking its strongest quarter. Powerwall 3 has received positive feedback from customers, many of whom appreciate its new capabilities with its built-in inverter for solar.

Megapack is continuing to see demand increases, currently highlighted by utility-scale Megapack systems, as well as data centers requiring stable power delivery. Megafactory Shanghai is also online now and producing Megapacks - with an annual production capacity of 20GWh today and up to 40GWh in the future. The site has also produced over 100 Megapacks this quarter, which are all awaiting delivery.

There was a lot of interesting news from Tesla’s Q1 2025 Earnings Call, covering everything from FSD and Robotaxi - to the less glamorous but equally important Megapack and Powerwall.

Tesla Introduces AI-Powered Phone Support for Tesla Insurance, Reducing Wait Times and Cutting Costs

May 1, 2025

By Karan Singh

Not a Tesla App

Tesla is heavily leaning into artificial intelligence, and its insurance offering is just another example of how it’s improving its product or lowering costs by leveraging AI.

Tesla recently started offering an insurance discount in select states when drivers use FSD for at least 50% of their drives and now it’s introducing an AI to help handle customer claims.

Tesla has developed an in-house voiced AI agent that can assist customers in handling simple support requests for Tesla Insurance.

Although Tesla Insurance is currently available in just 12 U.S. states, its voice AI assistant is accessible via phone across all supported states.

What the AI is Doing

For customers calling in from those states, the new AI agent provides a unique way to address the most common support calls. And it’s not just answering common questions but actually making requested changes to the owner’s account.

Policy Changes

The first key item is that it automates policy changes. Simple policy updates, including adjusting your deductible or coverage limits, are now done via AI. For policyholders who are simply looking to make quick changes and don’t have any questions, this makes the process a lot quicker by not having to wait for a representative. Tesla isn’t eliminating representatives, but this could reduce the number of representatives required or reduce wait times.

Continue Where You Left Off

The second item here, highlighted by Raj Jegannathan from Tesla’s internal IT team, is that Tesla’s AI agent is able to offer summaries of the user’s last interaction with Tesla Insurance. It will summarize your last interaction and provide assistance on that particular topic if you need to continue it. That means that you don’t have to wait for a human to review your file - the AI will kick off right where you left off.

Tesla appears to be focused on improving efficiency and making support more accessible. While actual items like claims are left up to humans due to their inherently complex nature, this helps free up employees to handle more complex items. While there’s no doubt Tesla will continue to develop this AI like they do everything else, we may soon see it take on even more tasks.

More AI

This isn’t the first AI agent that Tesla has demoed - there is now a chat-based AI sales agent available on the front page of Tesla’s website, which is able to answer common questions on Tesla vehicles.

Tesla has also been improving their AI support tool available in the Tesla App is able to provide feedback on common issues and also guide users towards either solving the problem or placing a support request.

Tesla has recently updated this AI to offer personalized support, allowing you to ask questions such as ‘What are my vehicle service alerts?’ or ‘Does my vehicle have a heat pump?’

Tesla’s strategy here is to influence the cost-heavy areas associated with having humans address simple requests and instead leverage AI, which can offer instant answers and reduce support costs.

Roll Out to More States

While this new AI is currently limited to just 12 states, it is likely to follow Tesla Insurance’s expansion. Insurance seems to have been at a bit of a standstill lately. Tesla continues to improve features such as the improvements to Safety Score V2.2, but we haven’t seen Tesla roll out support to new states since it added Minnesota in November of 2022.

Tesla may be looking to lower costs and refine the experience before it expands to additional states.