What is Scout's "Harvester range extender?"
Scout is still working on building the Traveler SUV and the Terra pickup truck, both of which will be powered exclusively by a battery electric system. While we don't know the battery size yet, the Scout Traveler SUV is supposed to have an 800-volt battery architecture with a 350 kW DC fast charging and bidirectional capability.
The pickup and SUV, both capable of an estimated 350-mile range, will share many of the same components, including one that helps extend the models' range. The so-called "Harvester" range-extending system (REX) claims to extend the Traveler and Terra's range to approximately 500 miles, but how does it work?This is not a new idea in the EV world. A while back, the BMW i3 used a scooter motor paired with a tiny gas tank to power an optional REX system hidden in the rear of the vehicle. This system allowed the vehicle to roughly double its range.
"To account for different work needs, we're planning to offer the choice of two energy systems: an all-electric system, or a gas-powered range extender called Harvester. The Harvester Range Extender is a generator packaged in the vehicle platform that will recharge the vehicle's high voltage battery. It will extend the expected range to over 500 miles (based on manufacturer estimates, EPA estimates will be provided when available)," Scout Motors said.
Scout's parent company Volkswagen has yet to release any technical information about the REX system, but we know they are looking for a cost-effective, lightweight, and rugged setup. This is not an easy ask.
Still, it's the best of both worlds. Not only can it truly overland, charge itself, and tow up to 7,000 lbs, the system is bi-directional, an incredibly useful resource that can power just about anything that needs electricity.One of the biggest enemies of any EV is weight. It's hard enough keeping the weight off when you are dragging a massive battery around, let alone heavy off-road accessories, drag-inducing tires, and boxy shapes. All of these factors hinder an EV's range.
A REX system will be heavy, too, which will further affect the range figure. There is also the added complexity of having the REX system. Suddenly, you're back to changing fluids, oiling, and fueling something that creates carbon waste.
Perhaps the next focus of EV manufacturers should be how to keep REX systems clean and reliable.
Despite these few downsides, I would suspect that Scout's Harvester range extending system will be a popular choice. For many, they will barely use it, while others will rely on it often. I personally like the idea of massive range to not only go way off the beaten path, but also to have the power to return to civilization and/or power up a campsite.
We're excited to learn the technical details of the REX system and see improved iterations of it in future EVs.
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