A Breakthrough in Battery Technology Poised to Transform Electric Vehicle Range, Charging Speed, and Cold-Weather Performance
Northborough, MA – March 18, 2025 – 24M, a leading US-based battery cell developer, today announced a significant expansion of its groundbreaking Eternalyte electrolyte technology. Initially developed to unlock the full potential of lithium-metal batteries, Eternalyte is now proven to deliver transformative performance enhancements across a wider range of battery chemistries, including silicon- and graphite-based batteries – the workhorses of today’s electric vehicles and energy storage systems. This expansion promises to redefine battery performance, offering dramatically improved charging speeds, extended range, and exceptional cold-weather operation.
Eternalyte represents a fundamental shift in battery electrolyte design. Traditional electrolytes often limit battery performance, particularly in demanding conditions. 24M’s Eternalyte addresses these limitations through a novel chemical composition and architecture, resulting in a suite of benefits that directly address key challenges facing the electric vehicle industry and beyond.
Unprecedented Charging Speed and Range Extension
The most immediate and impactful benefit of Eternalyte is its ability to drastically reduce charging times. According to 24M’s internal testing, a typical electric vehicle equipped with Eternalyte can achieve an 80% state of charge (SOC) from 15% in under four minutes, adding an estimated 200 miles (320 kilometers) of range. This represents a paradigm shift in EV ownership, alleviating a major barrier to wider adoption – the perceived inconvenience of lengthy charging stops.
This remarkable charging speed is underpinned by Eternalyte’s exceptional ionic conductivity, which is reportedly three times higher than that of conventional electrolytes (~26mS/cm at 25°C, ~0.6 Li+ transfer number). This enhanced conductivity facilitates the rapid movement of ions within the battery, enabling faster charging without compromising battery health or lifespan.
Exceptional Cold-Weather Performance
Beyond rapid charging, Eternalyte demonstrates unparalleled performance in cold temperatures – a critical factor for EV users in regions experiencing harsh winters. Conventional lithium-ion batteries suffer significant capacity loss at low temperatures, leading to reduced range and diminished performance. This is a common complaint among EV owners in colder climates.
Eternalyte’s high ionic conductivity maintains battery performance even at extremely low temperatures. In comparative cell-level testing, Eternalyte cells retain over 80% of their capacity at a 1C discharge rate and a cell temperature of -20°C. In contrast, cells utilizing conventional electrolytes typically experience a capacity loss exceeding 80% under the same conditions. This translates to a near-elimination of range reduction for EVs powered by Eternalyte in cold weather, a stark contrast to the 20-30% or greater capacity loss often experienced by vehicles with current-generation electrolytes.
A Versatile Solution for Diverse Battery Chemistries
While initially conceived for lithium-metal batteries, 24M’s research quickly revealed the broader applicability of Eternalyte. The company recognized the transformative potential of the technology and proactively expanded its development to encompass silicon- and graphite-based batteries, which are widely used in electric vehicles, energy storage systems, and portable electronics.
“Originally designed for lithium metal batteries, we quickly realized that the transformative nature of Eternalyte has far-reaching benefits for all types of batteries,” stated Naoki Ota, CEO of 24M. “We are excited to introduce the expanded Eternalyte family, one of the few chemistry innovations that can be implemented immediately to radically improve the performance of today’s batteries.”
Strategic Partnerships and Continued Investment
24M’s innovative technology has attracted significant interest from industry leaders. In early 2022, Volkswagen secured a 25% stake in the company, recognizing the potential of Eternalyte to revolutionize battery technology. While Volkswagen did not participate in the most recent financing round, the company continues to monitor 24M’s progress.
The September 2024 financing round, led by Nuovo+, a battery subsidiary of the Thai energy and petroleum company PTT Group, raised $87 million and valued 24M at $1.3 billion. This investment underscores the growing demand for advanced battery technologies and the confidence in 24M’s ability to deliver on its promises. The funds are being used to scale up production of Eternalyte and to further develop next-generation battery solutions.
Looking Ahead
24M is committed to accelerating the adoption of Eternalyte and to driving innovation in the battery technology space. The company is actively collaborating with battery manufacturers and automotive OEMs to integrate Eternalyte into next-generation battery packs. The expanded applicability of Eternalyte positions 24M to play a pivotal role in shaping the future of electric mobility and energy storage. The company anticipates further announcements regarding partnerships and product integrations in the coming months.
About 24M
24M is a US-based battery cell developer focused on creating innovative battery technologies that enable a sustainable future. The company’s proprietary Eternalyte electrolyte technology delivers transformative performance enhancements across a wide range of battery chemistries. 24M is committed to driving innovation and accelerating the adoption of advanced battery solutions.
