Cuberg is a leading innovator in next-generation battery technology, specializing in the development of high-performance lithium metal batteries. Founded in 2015 as a spin-out from Stanford University, the company has established itself as a key player in the battery industry, focusing on applications in electric aviation and high-performance electric vehicles. Cuberg’s technology is designed to deliver superior energy density, enhanced safety, and compatibility with existing manufacturing infrastructure, making it a compelling solution for industries demanding advanced energy storage.
In 2021, Cuberg became a subsidiary of Northvolt, a prominent European battery manufacturer, which provided the resources and expertise to accelerate its commercialization efforts. However, in late 2024, Cuberg’s production facilities were acquired by Lyten, a lithium-sulfur battery manufacturer, marking a new chapter in its evolution.
Battery Technology
Cuberg’s core innovation lies in its lithium metal battery technology, which replaces the traditional graphite anode with a lithium metal anode. This design significantly increases energy density, enabling batteries to store more energy in a smaller and lighter package. Combined with a proprietary non-flammable liquid electrolyte, Cuberg’s batteries address critical safety concerns associated with conventional lithium-ion batteries, such as thermal runaway and fire risks.
The company’s batteries have demonstrated impressive performance metrics, achieving energy densities of up to 369 Wh/kg and power outputs of 2,000 W/kg. These advancements make Cuberg’s technology particularly well-suited for high-demand applications like electric aviation, where weight and energy efficiency are paramount. Additionally, the compatibility of Cuberg’s technology with existing lithium-ion manufacturing processes allows for rapid scaling and cost-effective production, reducing barriers to market entry.
Cuberg’s focus on system-level integration and safety has positioned it as a leader in the development of next-generation batteries. By combining high energy density with enhanced safety features, the company is paving the way for the widespread adoption of electric aviation and other high-performance mobility solutions.
Recent Projects
In November 2024, Cuberg’s production facilities were acquired by Lyten, a San Jose-based lithium-sulfur battery manufacturer. Lyten plans to invest up to $20 million to convert Cuberg’s San Leandro facility for lithium-sulfur battery production, targeting an annual capacity of 200 MWh by the second half of 2025. This acquisition marks a strategic shift for Cuberg’s assets, aligning them with Lyten’s mission to advance sustainable battery technologies.
Prior to this acquisition, Cuberg achieved significant milestones under Northvolt’s ownership. In 2022, the company extended the cycle life of its lithium metal cells from 370 to 672 cycles with 80% capacity retention, demonstrating their competitiveness with state-of-the-art lithium-ion cells. These advancements underscore Cuberg’s commitment to improving battery performance and safety for applications in aviation, electric vehicles, and beyond.
Investors
Cuberg has attracted support from a range of notable investors, reflecting the strong potential of its technology. Key backers include Boeing HorizonX Ventures, Activate.org, the California Energy Commission, and the U.S. Department of Energy. These partnerships have provided Cuberg with the resources and validation needed to advance its lithium metal battery technology.
In 2021, Cuberg was acquired by Northvolt, which played a pivotal role in scaling its operations and integrating its technology into broader battery manufacturing processes. Following the acquisition by Lyten in 2024, Cuberg’s assets are now part of a new strategic initiative focused on lithium-sulfur battery production, supported by Lyten’s investors, including Stellantis, FedEx, and Honeywell.
Business Details
Location: San Leandro, California, USA
Website: https://cuberg.net
LinkedIn: https://www.linkedin.com/company/cuberg/
