Proterra Unveils Innovative Battery Pack Optimized for Heavy-Duty Truck Applications

Launch of H2-23 Battery Pack and the New Onyx Series Signals a New Era for Proterra

Proterra Powered LLC, a leading innovator in commercial vehicle electrification technology, today announced the debut of its H2-23 battery pack as part of the Company’s new Onyx Strata series. Engineered for Class 8 trucks and other demanding commercial applications, the new form factor expands Proterra's reliable battery technology portfolio, setting performance benchmarks in heavy-duty transportation electrification.

This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20250424688334/en/

Proterra Unveils Innovative Battery Pack Optimized for Heavy-Duty Truck Applications

The H2-23 battery pack is Proterra’s most energy-dense battery pack with a gravimetric density of 176 Wh/kg and volumetric density of 270 Wh/L, enabling a 750kWh energy system for Class 8 applications and up to 2MWh of total system energy. Engineered to power and transform heavy-duty trucks, it provides an optimal balance of range, durability, and performance. In addition, the H2-23 battery pack comes with software compliant to SAE J1939 and ISO26262, enhanced with improved security features. Designed to exceed the industry's most rigorous safety standards, the H2-23 underscores Proterra’s commitment to sustainability, American innovation, and advanced manufacturing at scale.

"The new H2-23 battery pack represents more than just a technological advancement — it embodies our renewed focus on powering the shift to a sustainable future," said Claire McConnell, Chief Business Officer at Proterra. "We've created a solution that delivers unparalleled performance even in the most challenging conditions. Every mile driven with our technology helps bring our customers closer to their zero-emission goals."

Debuting at the ACT Expo, this new battery technology will be showcased in multiple OEM vehicles and booths throughout the show, giving attendees a firsthand look at our latest innovation.

Alongside the H2-23 launch, Proterra is unveiling the Proterra Onyx Series that will include its H- and S-Series platforms.

• Onyx Slate: Single-layer battery configurations optimized for longer, larger commercial vehicles, offering flexible installation below or within frame rails, as well as roof-mounted options.
• Onyx Strata: Compact battery configurations designed to maximize energy storage in tight spaces, seamlessly integrating into both on- and off-highway applications.

Helping customers achieve their zero-emission goals, Proterra remains a leader in battery reliability and safety, driving new standards for performance and durability in the heavy-duty transportation and industrial EV sectors. With the H2-23 and the Onyx Series, Proterra continues to set new benchmarks in sustainable, high-performance energy solutions, ensuring commercial vehicles can transition to zero emissions without sacrificing power, efficiency, or durability.

About Proterra

Proterra is the proven electrification partner for heavy-duty transportation and equipment manufacturers, enabling the shift to zero-emission products. By providing innovative battery solutions that perform in the toughest environments, we power our customers to build a safe and sustainable future. Proterra products are proudly designed, engineered, and assembled in America, with offices in Silicon Valley and South Carolina. For more information, please visit www.proterra.com.

View source version on businesswire.com: https://www.businesswire.com/news/home/20250424688334/en/