Batteries Designed for Heavy-Duty Electric Vehicles
Proterra batteries are purpose-built for commercial applications, proven on the road through 40+ million service miles in heavy-duty applications for mass transit. Designed from the cell level up for commercial usage, Proterra batteries have industry-leading energy density for maximum range, a flexible design to fit within a wide variety of vehicles, and a ruggedized commercial grade housing to withstand harsh environments. Designed and manufactured in Proterra’s Silicon Valley and City of Industry battery manufacturing facilities by the best minds in battery engineering, Proterra battery systems are compact, safe and powerful.
Smart
- Active thermal management software ensures optimal charging and operation
- Energy reserve dynamically adjusts over time for maximum performance
- Sensors throughout pack deliver continuous monitoring and diagnostics for faster service
Safe & Durable
- Strong and lightweight ballistic-grade materials withstand toughest conditions
- Battery architecture features built-in safety mechanisms
- Rigorous vehicle testing and validation programs ensure highest standards of safety
Efficient
- Compact design enables industry-leading energy density, by volume and mass
- Efficient energy storage enables record-breaking range capabilities
- Consistent temperature control maximizes battery life in any climate
Flexible. Efficient. Proven.
Scalable, Modular Battery Pack Design
A modular design enables customizable battery pack dimensions that can easily be configured to megawatt-hour scale systems that fit within a variety of heavy-duty vehicle platforms. Battery packs are used as building blocks to create scalable energy storage systems. Up to four packs can be configured in series, and 16 can be connected in parallel, to provide a wide range of capacity and packaging options for different types of electric vehicles. Our flexible design enables Proterra® EV batteries to be the best choice for commercial vehicles ranging from transit buses and trucks to delivery vehicles, construction equipment, and more.
Proven in transit, the Proterra S series batteries already power medium- and heavy-duty transit vehicles on the roads throughout North America. Battery packs in the S series have a width of 860 mm and can contain up to 123 kWh of energy storage per pack.
WIDTH 860 mm
HEIGHT 175 mm / 340 mm
LENGTH Scalable up to 2808 mm
KWH RANGE Up to 123 kWh per pack and up to 6 MWh in application
VOLTAGE RANGE String voltage up to 1200 VDC
Proterra designed the H series batteries for commercial vehicles with space constraints that call for a narrower battery pack. Ideal for packaging between frame rails, battery packs in the H series are more compact, with a width of 620 mm and the ability to hold up to 82 kWh of energy storage capacity per pack.
WIDTH 620 mm
HEIGHT 175 mm / 340 mm
LENGTH Scalable up to 2808 mm
KWH RANGE Up to 82 kWh per pack and up to 4 MWh in application
VOLTAGE RANGE String voltage up to 1200 VDC
DESIGNED TO THE HIGHEST SAFETY STANDARDS
Every Proterra battery operates with state-of-the-art safety features, including cell-level passive propagation resistance (PPR). With PPR, in the rare event of a single battery cell failure with a thermal event, the issue would not spread to neighboring battery cells. Instead, the defective cell would remain isolated from the rest while the battery pack architecture allowed for proper venting away from the occupant cabin and doorways. This approach also enables a slower, more controlled release of energy over a longer period of time for maximum safety.
Rigorous Battery Testing For Highest Safety Standards
Battery Reuse and Recycling
After coming to the end of their useful life in a vehicle, Proterra batteries still retain a significant amount of energy that can be used in second-life applications like stationary energy storage, before the batteries are eventually recycled. Proterra batteries are made with second-life applications and recycling in mind, with pack architecture that allows for a stackable design in storage systems and materials suited for harsh outdoor environmental conditions.
The Proterra battery pack and module architecture also allows for easy separation of components for recycling purposes, allowing for 100% of aluminum used in the battery pack to be recycled. Instead of sending batteries to a hazardous waste incinerator, Proterra works with top-tier recycling companies that specialize in extracting and repurposing materials inside lithium-ion automotive batteries, recovering precious metals used in Proterra batteries.
