ACT Expo 2025, Proterra unveils new battery pack conceived for heavy-duty vehicles
"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."
U.S.-based battery maker Proterra Powered LLC unveiled new battery pack conceived for heavy-duty vehicles at ACT Expo 2025. The H2-23 battery pack, part of the company’s new Onyx Strata series, was engineered for Class 8 trucks and other demanding commercial applications.
Proterra at ACT Expo 2025
In technical terms, 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, according to the manufacturer 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. “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.”
Alongside the H2-23 launch, Proterra is showcasing the Proterra Onyx Series that will include its H- and S-Series platforms. In particular, the Onyx Slate is a single-layer battery configurations optimized for longer, larger commercial vehicles, offering flexible installation below or within frame rails, as well as roof-mounted options. On the other hand, the Onyx Strata is a compact battery configurations designed to maximize energy storage in tight spaces, seamlessly integrating into both on- and off-highway applications.
