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Rivian patent reveals R1T auxiliary battery that pushes range beyond 400 miles
Rivian CEO RJ Scaringe previously mentioned that his electric truck company is developing an auxiliary battery that acts as a “digital jerry can” for its vehicles, allowing them to travel beyond their listed range. Thanks to a recently published patent application, more details on this auxiliary battery system are now available.
The patent, titled “Electric Vehicle With Modular Removable Auxiliary Battery With Integrated Cooling,” describes an external battery module that can be fitted to an electric vehicle, thereby providing it with additional range. This is especially important for Rivian’s trucks, since they are designed to go off-road. Thus, the company notes that there is a need for an “auxiliary battery system for an electric automotive vehicle to increase the range of the electric vehicle, and in particular, an auxiliary battery system that can be carried by the electric vehicle.”
As could be seen in the patent application, the auxiliary battery system would be installed on the cargo area of a truck. In the case of the R1T pickup, for example, the battery module would be fitted on the truck’s bed. The entire module also includes latching mechanisms and connectors, which are designed for easy installation and removal.
- Illustrations depicting Rivian’s auxiliary battery system. (Photo: Rivian Automotive)
- Illustrations depicting Rivian’s auxiliary battery system. (Photo: Rivian Automotive)
- Illustrations depicting Rivian’s auxiliary battery system. (Photo: Rivian Automotive)
- Illustrations depicting Rivian’s auxiliary battery system. (Photo: Rivian Automotive)
Illustrations depicting Rivian’s auxiliary battery system. (Photo: Rivian Automotive)
Perhaps more impressively, Rivian’s design for its auxiliary battery utilizes the cooling systems of the vehicle itself. Upon installation of the battery unit, Rivian notes that the vehicle’s systems would perform necessary adjustments, ensuring that ride quality and driveability do not get compromised or unnecessarily changed. Rivian outlines this process in the following section:
“When outfitted with the auxiliary battery, the electric vehicle can detect the fact that the auxiliary battery is attached to (e.g., mounted in) the electric vehicle (e.g., in cargo bed) and automatically set one of multiple predetermined feature sets, e.g., that pertain to driving performance of the electric vehicle. Such feature sets may set, for example, certain suspension characteristics appropriate for the attachment of the auxiliary battery, such as, e.g., a setting for firmness of ride of the vehicle, braking performance/sensitivity, nominal suspension height, effective steering ratio, etc.”
It should be noted that the auxiliary battery module design outlined in Rivian’s recently-published patent appears to be optimized for the R1T pickup truck. Based on the illustrations provided by the company, the external battery seems to take up a substantial amount of space in the all-electric pickup’s bed. With this in mind, it remains to be seen how the company would design a similar battery solution for the R1S SUV, which does not have a bed like the R1T. Nevertheless, considering Rivian’s polished approach to its designs, it is quite exciting to see how the company would equip a seven-seater SUV with a range-extending battery module.

RJ Scaringe noted in a previous interview that one of the reasons behind Rivian’s extra large battery packs (offered at 105 kWh, 135 kWh, and 180 kWh configurations) is to ensure that drivers would have enough range for their adventure needs. This certainly appears to be the theme with Rivian’s vehicles, as could be seen in its top-tier variants’ range of 400 miles per charge. Coupled with an auxiliary battery system, the company’s trucks could very well close in or even exceed the 500-miles per charge mark.
Similar to other new automakers such as Tesla, Rivian’s first vehicles are made for the luxury niche, not the mass market. As noted by RJ Scaringe in an interview with Green Tech Media, Rivian’s target demographic are the people who are “spending $70,000 or $80,000 on a GMC Denali or a Chevy Suburban or a Land Rover Discovery or a fully loaded Ford F150.” For these potential customers, the company can tolerate no compromises, and in Scaringe’s words, “under-promise and over-deliver.” This is especially true with regards to the R1T and the R1S’ range.
Rivian’s patent application for its auxiliary battery system could be accessed here.
News
Ford CEO favors Waymo’s LiDAR approach over Tesla’s vision-only self-driving
Farley stated that Waymo’s LiDAR-based approach made “more sense.”

Ford CEO Jim Farley shared some skepticism about Tesla’s camera-only approach to self-driving during a recent appearance at the Aspen Ideas Festival. When asked to compare Waymo and Tesla’s autonomous driving systems, Farley stated that Waymo’s LiDAR-based approach made “more sense,” citing safety, consumer trust, and the limitations of camera-based models.
Waymo’s LiDAR vs. Tesla’s Vision-Only Approach
Farley was speaking with author Walter Isaacson when he made his comments about Tesla and Waymo’s self-driving systems. As they were conversing about autonomous cars, Isaacson asked Farley which approach to self-driving he preferred.
“To us, Waymo,” Farley said, though he also stated that both Tesla and Waymo have “ made a lot of of progress” on self-driving, as noted in a Fortune report. He also confirmed that he has had conversations about the matter with Tesla CEO Elon Musk. Despite this, he said that Ford still considers LiDAR as a pivotal part of autonomous driving.
“When you have a brand like Ford, when there’s a new technology, you have to be really careful. We really believe that LiDAR is mission critical… Where the camera will be completely blinded, the LiDAR system will see exactly what’s in front of you,” the Ford CEO stated.
Tesla and Ford’s self-driving plans
Tesla recently launched a limited Robotaxi service in Austin, which uses autonomous cars with safety monitors in the front passenger seat. While controversial, Musk has maintained that Tesla’s vision-only approach will ultimately prove safer and more cost-effective in the long term. Tesla seems to be making headway towards this goal, with Musk stating recently that the first Model Y has been delivered autonomously to a customer in Austin.
Ford, for his part, is not pursuing its own fully autonomous, urban-driving system anymore. Instead, the company is focusing on “high-speed, eyes-off” experiences like BlueCruise. Ford does plan to partner with a company that has achieved true autonomous driving in the future, as soon as the technology is available.
Elon Musk
A Tesla just delivered itself to a customer autonomously, Elon Musk confirms
Tesla CEO Elon Musk says the first self-delivery occurred today, one day ahead of schedule.

Tesla CEO Elon Musk has confirmed that a vehicle has, for the first time ever, delivered itself to a customer autonomously, one day ahead of the company’s original schedule.
To date, this is the first car to ever roll off a production line at a factory and transport itself to a customer for delivery.
Late last month, Musk announced that the first-ever fully autonomous delivery of a Tesla would take place on June 28. The plan was to have the car roll off the production lines at Gigafactory Texas and drive to a local customer without the assistance of anyone on board or remotely controlling the car through teleoperation.
Teslas will self-deliver to customers, Elon Musk says: here’s when
Musk said on Friday that it has officially happened:
🚨 Elon Musk confirms the first Tesla to self-deliver to a customer has happened, one day ahead of schedule! https://t.co/Zvb9y4m0uu
— TESLARATI (@Teslarati) June 27, 2025
The vehicle traveled as fast as 72 miles per hour, according to Ashok Elluswamy, Tesla’s Head of AI and Autopilot.
Musk continued on X:
“There were no people in the car at all and no remote operators in control at any point. FULLY autonomous! To the best of our knowledge, this is the first fully autonomous drive with no people in the car or remotely operating the car on a public highway.”
He said a video of the delivery would be uploaded soon.
We have seen cars autonomously transport themselves from production line to logistics lot at Gigafactory Texas, but this is a whole new level.
Tesla’s Giga Texas vehicles now drive themselves to outbound lot
Tesla just recently launched its Robotaxi for the first time in Austin on Sunday. Opened to a limited number of people, the company rolled out an Early Access Riders Program, but has been expanding it to more people in recent days. These cars featured a Safety Monitor in the passenger’s seat to ensure safety.
This seems to be something Tesla would like to perform more frequently in the coming months, especially locally. Eventually, it seems that Tesla will plan to have every vehicle it manufactures self-deliver, as a hauler would transport it to local delivery centers, then the car would drive itself to the customer’s house.
This is likely a few years off, but Tesla has already completed one self-delivery, which is an incredible accomplishment.
Yesterday, I wrote about Tesla’s two big milestones that are still planned for launch before the end of Q2. This was one of them. One to go: unveiling of the affordable models.
News
Tesla dispels reports that it hired ex-Cruise Autonomy head Henry Kuang
Tesla has denied reports that it hired former head of GM’s Cruise Henry Kuang.

Tesla has dispelled reports that it has hired ex-Cruise Head of Autonomy Henry Kuang.
This morning, several media outlets reported that Tesla had filled the position of Director of AI and Deep Learning for Autonomous Driving with Kuang, who was the Head of Autonomy at General Motors’ failed autonomous vehicle company, Cruise.
The rumor then circulated to X, but Tesla has now denied that those reports are true.
Tesla’s Head of Autopilot and AI, Ashok Elluswamy, revealed that the reports are false:
fake news
— Ashok Elluswamy (@aelluswamy) June 27, 2025
It would be easy to see how the hire might have been construed as real. Someone appears to have created a fake LinkedIn profile for Kuang, listing the new role at Tesla as their latest career move. The account appeared legitimate and bore all the hallmarks of a genuine page for Kuang, but it has since been removed from the site.
Additionally, there has been some rather high-level turnover at Tesla in recent days. The company recently let go of Omead Afshar, who was widely recognized as CEO Elon Musk’s right-hand man. Afshar assumed the role of North American sales head and European operations head late last year. He has been relieved of his duties, according to a Bloomberg report.
Tesla’s Omead Afshar, known as Elon Musk’s right-hand man, leaves company: reports
Alongside the loss of Afshar, Tesla’s Human Resources Head in Austin, Jenna Ferrua, also left the company this week.
This past week, Tesla launched its Robotaxi platform to a handful of people, marking the first time the company has given driverless rides to members of the public.
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