Bollinger Motors announced the development of Class 4 and 5 electric platforms, adding to its existing development in Class 3 electric truck engineering.

The full range of Chass-E platforms are the result of more than six years of electric-vehicle engineering. It began in 2017 with the original Class 3 Bollinger B1 SUV, the company said in a statement.

"We started from day one working on Class 3 all-electric trucks. We've proven our chops over the years with multiple prototypes, and our own battery development," said CEO and founder Robert Bollinger. "Now we're proud to take that hard work and provide electric-chassis solutions for OEMs and commercial customers in Classes 3, 4 and 5 -- where large payloads, sufficient range, and long-life durability are practically mandatory."

The electric-platform collection consists of Chass-E-3 with a payload of up to 8,000 lbs. The Chass-E-4 has a payload up to 9,000 lbs. and the Chass-E-5 has a payload up to 11,500 lbs.

All three platforms get their energy from Bollinger Motors 700-volt battery packs.

"The variety of battery packs available to all three vehicle-class sizes means that the end customers can choose their payload, wheelbase, price point, and mile-range targets that best suit their fleet," said Frank Jenkins, commercial sales director for Bollinger Motors.

The all-electric truck platforms are powered by solid rear axle E-Drives built for commercial use.

"Solid rear axles are the cornerstone for commercial fleets. They are stronger and more durable than alternative ways to electrify trucks," said David Cripps, chief engineer at Bollinger Motors. "It's the most efficient way to switch to electrification, while keeping what works best for commercial."

The Chass-E platforms include:

• Chassis Cabs

• Last-Mile Delivery Vans

• Freight Trucks

• Bucket Trucks

• Airport Tugs

• Autonomous Vehicles

"We're excited to broaden our expertise in Class 3 engineering to include Class 4 and 5," said Bollinger. "Our full range of hard-working trucks will give customers a ton of options."