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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.
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- Illustrations depicting Rivian’s auxiliary battery system. (Photo: Rivian Automotive)
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- Illustrations depicting Rivian’s auxiliary battery system. (Photo: Rivian Automotive)
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- Illustrations depicting Rivian’s auxiliary battery system. (Photo: Rivian Automotive)
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- 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.
Elon Musk appeared on the Moonshots podcast with Peter Diamandis today to discuss AGI, U.S. vs. China, Tesla, and some other interesting topics, but there was some discussion about the upcoming unveiling of the Roadster, the company’s electric supercar that will arrive several years after it was initially slated for release.
Musk made some pretty amazing claims about the Roadster; we already know it is supposed to be lightning-fast and could even hover, if Tesla gets everything to happen the way it wants to. However, the car has some pretty crazy capabilities, some of which have not even been revealed.
On the podcast, Musk said:
“This is not a…safety is not the main goal. If you buy a Ferrari, safety is not the number one goal. I say, if safety is your number one goal, do not buy the Roadster…We’ll aspire not to kill anyone in this car. It’ll be the best of the last of the human-driven cars. The best of the last.”
🚨 Elon on the Roadster unveiling, scheduled for April 1:
— TESLARATI (@Teslarati) January 6, 2026
Musk makes a good point: people who buy expensive sports cars with ridiculous top speeds and acceleration rates do not buy them to be safe. They hope they are safe in case of an emergency or crash, but safety is not at the forefront of their thoughts, because nobody buys a car thinking they’ll crash it.
The Roadster is truly going to push the limits and capabilities of passenger vehicles; there’s no doubt about that. Tesla plans to show off the new version car for the first time on April 1, and Musk has only hinted at what is possible with it.
Musk said back in November:
“Whether it’s good or bad, it will be unforgettable. My friend Peter Thiel once reflected that the future was supposed to have flying cars, but we don’t have flying cars. I think if Peter wants a flying car, he should be able to buy one…I think it has a shot at being the most memorable product unveiling ever. [It will be unveiled] hopefully before the end of the year. You know, we need to make sure that it works. This is some crazy technology in this car. Let’s just put it this way: if you took all the James Bond cars and combined them, it’s crazier than that.”
Production is set to begin between 12 and 18 months after the unveiling, which would put the car out sometime in 2027. Hopefully, Tesla is able to stay on track with the scheduling of the Roadster; many people have been waiting a long time for it.
News
Tesla launches hiring for Robotaxi program in its twentieth country
Overall, the hiring signals Tesla’s aggressive timeline for global dominance in autonomous mobility.
Tesla has launched a hiring initiative for its Robotaxi program in its twentieth country, as the company posted two new jobs in Thailand this week.
Tesla is hiring in Bangkok and Kowloon for the Vehicle Operator position, which is related to data collection, and is the first in Thailand, but the twentieth country overall, as the company tries to expand into other markets.
🚨 BREAKING: Tesla is hiring additional full-time Vehicle Operators in Bangkok, Thailand.
Previous openings were 6-month, part-time roles. These are equivalent to AI Safety Operator roles in the U.S. pic.twitter.com/R6LzoU1bos— Tesla Yoda (@teslayoda) January 5, 2026
Tesla has had active job postings for Vehicle Operator positions in the United States, India, Israel, Taiwan, Germany, the Czech Republic, Hungary, the UK, Finland, Switzerland, Sweden, the Netherlands, Austria, Spain, Norway, Italy, and Turkey in past listings.
These postings are not all currently available, likely because the roles have been filled.
Thailand is the most recent, and broadens the company’s potential path to expanding its ride-hailing program, which is only active in the United States in Austin, Texas, and the California Bay Area, so far.
These roles typically involve data collection, which assists in improving Autopilot and Full Self-Driving operation. Tesla’s self-driving programs utilize real-world data that is accumulated and stored, observing vehicle and traffic behavior, as well as tendencies that are performed by human drivers to help increase safety and overall performance.
Overall, the hiring signals Tesla’s aggressive timeline for global dominance in autonomous mobility. Although the company has several high-profile rivals and competitors in the field, it has established itself as a main player and a leader in the development of autonomous technology, especially in the U.S., as its FSD suite is refined on almost a weekly basis.
The Full Self-Driving suite is available in seven countries and territories currently, including the U.S., Canada, China, Mexico, Puerto Rico, Australia, and New Zealand. Its biggest goal for expansion is currently the European market, where regulatory hurdles have been the main bottleneck prolonging its launch on the continent.
Tesla has performed months of testing in various European countries, including France and Spain, and does have support in some areas from various regulatory agencies. However, the company is hoping to get through this red tape and offer its suite in Europe for the first time, hopefully this year.
News
Tesla China rolls out Model Y upgrades, launches low-interest financing
These strategies are aimed at improving the ownership experience and keeping vehicle pricing competitive in the world’s largest electric vehicle market.
Tesla has rolled out minor updates to the five-seat Model Y in China, upgrading the vehicle’s center display to a higher-resolution 16-inch 2K screen. The electric vehicle maker also introduced attractive financing options, including 7-year low-interest rates, to offset the new purchase tax on EVs.
These strategies are aimed at improving the ownership experience and keeping vehicle pricing competitive in the world’s largest electric vehicle market.
Five-seat Model Y gets larger, better display
With its recent update, all three variants of the five-seat Model Y now feature an upgraded 16-inch 2K resolution center display, which replaces the vehicle’s previous 15.4-inch 1080p panel. This screen was already used in the six-seat Model Y L, and it offered improved visual clarity. Tesla China has also updated the Model Y’s headliner to black, giving the vehicle a sleeker appearance.
Prices of the five-seat Model Y remain unchanged at RMB 263,500, RMB 288,500, and RMB 313,500 for the respective trims. This update enhances the cabin experience as domestic rivals are already adopting high-resolution screens. As noted in a CNEV Post report, some domestic automakers have begun rolling out vehicles equipped with 3K-resolution displays.
New financing offers
Tesla also launched ultra-long-term financing offers for its locally produced models in China, which include the Model 3 sedan, the five-seat Model Y, and the six-seat Model Y L, through January 31, 2026. The 7-year option features an annualized fee rate as low as 0.5%, which is equivalent to 0.98% interest. This is expected to save customers up to RMB 33,479 ($4,790) compared to standard rates.
A 5-year zero-interest plan is also available, and it has been extended to the Tesla Model Y L for the first time. These incentives help offset China’s new 5% purchase tax on New Energy Vehicles (NEVs) in 2026-2027. Some of Tesla’s rivals in China have announced in recent months that they would be covering the purchase tax owed by buyers early this year.
Elon Musk just said some crazy stuff about the Tesla Roadster
Tesla launches hiring for Robotaxi program in its twentieth country
