What type of battery cells does Tesla use?

[VanessaAnn]

Tesla uses 18650 battery cells, whose function is to provide strong current to the starter when starting the engine. Taking the 2021 Tesla model as an example, it belongs to the mid-to-large SUV category with the following dimensions: length 5037mm, width 2070mm, height 1684mm, wheelbase 2965mm, minimum ground clearance 137mm, and curb weight 2473kg. The 2021 Tesla model is equipped with a front permanent magnet dual-motor system, delivering a total power of 395kW and total torque of 755Nm, paired with a 1-speed fixed gear ratio transmission.

[AveryDella]

I've always been fascinated by Tesla's battery choices, which I think are quite smart. Tesla primarily uses cylindrical lithium-ion cells, starting with the early 18650 specification, such as in the Model S and Model X. Later, they upgraded to the 2170 type in the Model 3 and Model Y, which has higher energy density and improved range performance. Now, newer models like the Cybertruck have switched to Tesla's self-developed 4680 cells, which are larger, more space-efficient, and can optimize thermal management systems to reduce overheating risks. These cells enable faster and more stable charging, though manufacturing costs remain somewhat high, requiring continuous improvements in production processes. I understand they aim to balance performance and cost through these designs, driving the entire electric vehicle industry forward. This innovation not only extends the range of the cars but also reduces maintenance hassles, making it a significant advantage for Tesla.

[Joanna]

As a Tesla Model 3 owner, I deeply appreciate the convenience brought by the 2170 battery cells. These cylindrical battery packs make daily driving smoother – a single charge can last for hundreds of kilometers, eliminating range anxiety during long trips. Charging stations can replenish a significant amount of power in just minutes, making life much more comfortable. I feel the battery lifespan is better than that of fuel-powered cars, with minimal degradation noticeable after several years of use. Moreover, Tesla keeps upgrading its technology, and I've heard the new models use more efficient 4680 cells that further reduce charging time. Although I can't see the internal components directly, from a user perspective, these cells are made with reasonable material choices, reducing the risk of combustion and providing peace of mind while driving. They also come with intelligent systems that automatically manage temperature and power, saving me the hassle of maintenance. In short, high-quality battery cells significantly enhance the driving experience.

[AustinFitz]

Looking back at Tesla's battery evolution, I recall they adopted 18650 cells since the Roadster era, which were representative of early lithium-ion batteries. With the launch of the Model series, they transitioned to the 2170 specification, achieving roughly a 50% increase in energy density, fueling a surge in sales. Now, the 4680 cell has emerged as the new highlight—larger in size but with better integration, reducing component count and simplifying manufacturing. These changes reflect Tesla's pursuit of efficiency—through iterative design, optimizing range and reliability. From my observations, each upgrade stems from market demands and technological breakthroughs, such as the dry electrode process announced on Battery Day. This drives the entire industry forward, not just isolated improvements. History has proven that smart cell selection is key to success.