Onyx
Strata 
Ideal for use in
- Class 8 Trucks
- Off-Highway Equipment
- Specialty Vehicles
Onyx Strata
Engineered for tight spaces where space is limited but the need for energy is high, Onyx Strata powers zero-emission performance for Class 8 trucks, industrial equipment, and specialty vehicles.
The Proterra Onyx Strata features a compact battery configuration designed for space efficiency, offering seamless installation and integration for new builds and upfitted vehicles.
The Onyx Strata series offers three space-efficient solutions for vehicles and equipment with tight packaging constraints and high performance demands.
Onyx Strata
H2-23
Our highest energy pack, perfect for large enclosures, designed to fit within frame rails
Energy
125 kWh
Voltage
460V — 675V — 773V
Length
2185mm
Width
620mm
Height
345mm
Weight
725kg
Onyx Strata
S2-15
High-density packaging. Ideal for large engine bays of on- or off-highway applications
Energy
123 kWh
Voltage
450V — 660V — 756V
Length
1475mm
Width
860mm
Height
345mm
Weight
710kg
Onyx Strata
H4-15
Flexible design fits between frame rails or in engine bays of on- or off-road vehicles
Energy
82 kWh
Voltage
450V — 660V — 756V
Length
845mm
Width
660mm
Height
735mm
Weight
470kg
The Onyx battery delivers confidence, performance, and efficiency.
Space-Optimized Design
With volumetric density reaching 300 Wh/L, Onyx Strata maximizes energy storage in confined spaces without compromising vehicle design.
Flexible Integration
Compact, modular packs allow for creative placement in space-restricted areas, preserving ground clearance and operational capacity.
Proven Safety
Every Proterra battery is tested and certified to meet or exceed UN38.3, ECE R100.03, and SAE J2929 safety protocols for heavy-duty applications.
Rugged Durability
We need to update this description: Built with ruggedized aluminum housings that shield each pack from impact, vibration, and extreme environments, these batteries maintain reliable performance.
Operational Efficiency
Exceeding 178 Wh/kg gravimetric energy density, our batteries extend range and increase payload capacity without compromising performance.
Passive Propagation Resistance
Cell-level PPR isolates any thermal event within a single cell, preventing it from affecting neighboring cells while providing safe, controlled venting.
Battery Management System
Embedded sensors and battery management software enable real-time diagnostics and performance calibration at the sub-pack level for safe operation and faster servicing. No additional hardware required.
Active Thermal Management
An integrated liquid cooling and heating system maintains uniform cell temperatures, optimizing performance and reliability in any operating condition.
Serviceable Components
Fuses, contactors, controllers, and pre-charge circuitry are easily accessible so the battery can be serviced without being removed from the vehicle.
Interested in integrating the Onyx Strata?
We're ready to power your shift to zero emissions.
Have Questions? Need Support? Talk to an Expert
Get Started
Complete the form below, and we'll contact you shortly to discuss how we can work together to electrify your vehicles.
We use cookies on the Proterra website to ensure the best possible experience for our visitors. By clicking “I Accept” or continuing to browse, you accept the use of cookies on this site. Please visit our Privacy Policy and Cookies Policy to learn more.
Accept Cookies