Farasis Energy, based in Ganzhou, China, has announced the successful testing of its pioneering battery cells, achieving a significant milestone in the development of a million-mile battery, a feat attained by only a select few companies globally. The achievement was realized through rigorous testing of its NCM chemistry cells, the P75 and P73, developed since 2018.
These tests, spanning 24 to 36 months of accelerated conditions, have demonstrated that battery packs utilizing these cells can last a million miles over a 15-year span while maintaining over 70% of their original capacity.
The testing process took into consideration real-world conditions, including fast charging, high depth of discharge, and fluctuating temperature and pressure conditions reflective of those in major automotive markets such as the US, Western Europe and mainland China. Farasis emphasized the importance of testing under conditions that closely mimicked actual usage to ensure the reliability and durability of their battery cells under typical consumer usage scenarios.
The company credits the longevity of its cells to the use of advanced materials and charging strategies, including semisolid gel-coated separators and optimized cathode, anode and electrolyte materials. These innovations contribute to reduced lithium plating, minimized heat generation during charging, and overall enhanced performance and stability of the cells. These cells also offer high-energy density, quick-charging capabilities and robust safety features, including thermal propagation mitigation technologies.
Currently, these cells are being mass-produced for use in high-end passenger vehicles, including those from Voyah and Mercedes-Benz, as well as in commercial vehicles and other applications requiring long-lasting battery solutions. The cells promise to provide significant environmental and financial benefits, especially for commercial vehicles such as buses and heavy-duty trucks, which traditionally rely on diesel engines but can now benefit from the lower operating costs associated with electric powertrains.
Additionally, Farasis' cells have drawn interest from major players in the electric vertical takeoff and landing (eVToL) vehicle market for their durability, with independent evaluations showing that the cells can last over 10,000 flight cycles, making them preferable to cylindrical and prismatic cells for this application. This development underscores Farasis' contribution to advancing battery technology for a wide range of automotive and aerospace applications, highlighting the company's pivotal role in the transition toward more sustainable and reliable electric mobility solutions.
