At the Cybertruck event, Tesla showed off the Cybertruck’s extended battery, an optional accessory permanently mounted to the truck’s bed. This was Tesla’s solution to keeping the truck price as low as possible while also giving owners a chance to get close to the truck’s original range of 500 miles.
The Range Extender is engineered to boost the Cybertruck's mileage substantially, increasing the truck’s total range by about 35%.
Tesla's Range Extender is a departure from traditional range-extending methods, often involving gasoline generators. Its design, occupying roughly a third of the truck bed, strikes a balance between added functionality and maintaining the truck’s cargo space. It addresses range limitations and makes the Cybertruck more suitable for towing and long-range trips.
Range / Battery Size
The Ranger Extender extends the Cybertruck total range by 120 miles (193 km). For the Cyberbeast, it’ll take the truck’s range from 320 miles up to 440, whereas for the AWD version, the range will be increased from 325 miles to 445 miles.
These are Tesla’s latest numbers, which have been reduced slightly from Tesla’s original estimates that the Ranger Extender pegged at adding 130 miles.
The Ranger Extender uses a huge 47 kWh battery pack, which explains why it takes up a significant portion of the truck’s bed. For comparison, Tesla’s Standard Range+ Model 3 has a 54 kWh pack, capable of driving about 260 miles.
Price
Though official pricing for the Range Extender has yet to be officially announced, it looks like it’ll be priced at a hefty $16,000 USD. The night the Range Extender was revealed, code was found on Tesla’s website that showed off the $16,000 price tag. However, it’s not clear whether this price was a placeholder or if the price will change before it becomes officially available.
Size & Weight
The Ranger Extender fits perfectly alongside the back of the Cybertruck’s bed. Instead of being laid evenly across the bottom of the bed, it’s nestled up against the cabin, making it easier to load items into the truck.
Elon Musk elaborated on the Range Extender's functionality: "It's an optional pack that fits in about 1/3 of the truck bed. There is still room for plenty of cargo. It's meant for very long trips or towing heavy things up mountains."
With a battery pack of 47 kWh, the Range Extender isn’t going to be something light. The Cybertruck’s “battery pack” is estimated to weigh about 600 to 650 lbs (272 kg to 294 kg), which also means that it’ll reduce the truck’s towing capacity by that much.
Installation
A few Cybertruck owners have discussed a marketing idea for the range extender would be to rent it out. Cybertruck owners could rent it for a weekend trip or an extended holiday camping. It's unlikely that Tesla will take on that business, but it is an idea for when more Cybertrucks are around and need that extra range.
Unfortunately, the Cybertruck Range extender is not something that could be easily removed or added, mostly due to its weight. Tesla has said that the Range Extender will need to be installed by Tesla Service and it’s a “permanent” install. We imagine it could also be removed at a later date, but it’s not something you could just do on your own when you don’t need it.
Unfortunately that means that owners will have to choose between additional range or cargo room. If you use the truck mostly for towing, the reduced cargo space may not be a big deal, but for other owners that use their truck for a variety of tasks, it could be a deal breaker.
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Some Cybertruck owners have suggested renting the Range Extender for weekend trips or extended camping holidays.
However, the Cybertruck’s range extender isn’t designed for easy removal or installation, primarily due to its weight and high-voltage connections. Tesla has stated that installation must be performed by Tesla Service and is considered a “permanent” modification. While removal may be possible later, it won’t be something owners can easily swap in and out as needed.
This means Cybertruck owners will have to choose between additional range or cargo space. For those who use the truck primarily for towing, the reduced cargo capacity may not be a major issue, but for owners who use their truck for a variety of tasks, it may not be an easy decision.
Availability / Release Date
The Range Extender was initially expected to be available for pre-order customers in early 2025, but that timeline has now slipped to mid-2025. Given Tesla’s ambitious production goals this year, it wouldn’t be surprising if it gets pushed even further, possibly into 2026.
One potential reason for the delay is Tesla’s ongoing work on perfecting its dry-cathode battery process. Since the Range Extender is a low-volume product, Tesla may be prioritizing it as a testbed for dry-cathode cells before scaling them to full vehicle production. Unlike an entire truck, a battery pack like the Range Extender is easier to replace or refine if necessary.
In the meantime, Tesla is likely focused on the Cybercab and its next-generation vehicle. The Ranger Extender is expected to use the same 4680 battery cells as the Cybertruck, so Tesla will also want to ensure it has sufficient supply for vehicle production before producing the Range Extender.
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Tesla’s Dan W Priestley attended the Advanced Clean Transportation (ACT) Expo in Anaheim, California, and provided an update on Tesla’s Semi truck program. The presentation covered several key developments on the status of Tesla’s Nevada Semi Factory, refinements to the Semi, and Tesla’s plans for charging and ramping production through 2026.
Let’s dig in and take a look at everything that was captured by the Out of Spec team at ACT Expo. The original video is embedded below if you’d like to watch it.
Semi Factory & Production Ramp
Priestley reaffirmed the timelines mentioned during Tesla’s Q4 2024 Earnings Call that Tesla will scale Semi production in 2026. To achieve this, Tesla has been actively building and expanding the Gigafactory Nevada site, specifically to support the production of the Tesla Semi. The dedicated Semi facility will have a targeted annual capacity of 50,000 Semi trucks.
Following the beginning of production, Tesla will utilize the initial trucks to integrate into its own logistics operations. This will serve as both a final real-world testing ground as well as an opportunity for Tesla to gather data internally. Tesla plans to begin subsequent customer deliveries throughout 2026 as the ramp-up continues.
Reuters also reported that Tesla is hiring over 1,000 new employees at the Semi Factory to begin the rapid ramping of the program.
Semi has already amassed 7.9 million miles with Tesla’s current testing and operational fleets, providing some real-world data and testing. Feedback for the truck has been exceptionally successful, with many drivers praising the Semi’s performance and comfort.
New Tesla Semi Features
Of course, it wouldn’t be a Tesla keynote without showing off some new things. The Semi will be available in 500-mile and 300-mile range configurations, now featuring updated mirror designs and a drop-down glass section to improve visibility and allow easier interaction with external elements—such as control panels at ports, for example.
New Electric Power Take-Off (e-PTO)
The Tesla Semi will also feature a new capability called Electric Power Take-Off, or e-PTO system. Similar to the PTO systems found on other vehicles, this will allow the Semi’s high-voltage battery to power auxiliary equipment at variable voltages. That includes being able to power things like climate-controlled reefer trailers, potentially replacing the noisy and polluting diesel generators traditionally used for this purpose.
Charging and Batteries
Out of Spec BITS/YouTube
Tesla is also working on an updated battery pack design for the final production design of the Semi. This new pack is designed to be more cost-effective to manufacture. The battery pack itself is slightly smaller than before, but the truck maintains the same level of range through efficiencies. Dan also confirmed during his keynote that the battery cells for the Semi will be sourced domestically inside the United States, helping to alleviate potential burdens due to tariffs.
On the charging front, Tesla is using MCS - the Megawatt Charging System - capable of 1.2MW - and designed specifically for Semi. The system uses the same V4 charging hardware found at Supercharger sites but focuses on that larger power output. Alongside a smaller physical footprint, Tesla will be able to configure these V4 cabinets for either dedicated Semi charging or for shared power scenarios with regular Superchargers. Tesla is also working on an integrated overnight charging product, but Tesla isn’t ready to talk about it yet.
46 Semi Charger Sites Coming
The 46 new MCS sites coming soon.
Out of Spec BITS/YouTube
Finally, Tesla has made substantial investments in a public charging network for the Semi. There are currently 46 sites in progress throughout the United States, and plans for significant expansion throughout 2026 and 2027. These sites are strategically located alongside major truck routes and within industrial areas to support long-haul and regional operations. Tesla is aiming to offer the lowest possible energy costs to operators to help incentivize adoption.
This was one of the best updates to the Tesla Semi we’ve received since its initial unveiling. It seems that the Semi will receive a big portion of Tesla’s attention in 2026, while Robotaxi and FSD Unsupervised take the stage this year.
The Tesla Semi has the potential to transform transportation even more dramatically than EVs already have, serving as a testament to Tesla’s mission to electrify the world.
Sentry Mode is an invaluable tool for owners - capable of keeping the vehicle safe and secure even when you’re not around. This is especially true in recent times, with the misguided and unfortunate incidents surrounding Tesla ownership, including damage to Tesla vehicles, showrooms, and Superchargers.
B-pillar Camera Recording and Dashcam Viewer
With the 2025 Spring Update on 2025.14, Tesla is expanding Sentry Mode’s functionality for certain vehicles with some much-needed changes. Sentry Mode and Dashcam can now record footage from the vehicle’s B-pillar cameras. These cameras are located on the side pillars of the vehicle, between the front and rear doors.
This adds two crucially needed viewpoints, making Tesla’s Sentry Mode a truly 360-degree security system. These cameras also provide the best angles for capturing license plates when parked, so they will be greatly appreciated by owners in the event of an incident.
These vehicles are also receiving an improved Dashcam Viewer, which now displays the six camera feeds along the bottom and a new grid view. It also allows users to jump back or forward in the video in 15-second increments.
However, to the disappointment of many owners, not all vehicles are receiving these updates due to the additional processing power needed.
Limited to Hardware 4 Vehicles, Ryzen Isn’t Enough
We have confirmed that Tesla is only adding the additional camera recording and improved Dashcam Viewer on hardware 4 (HW4 / AI4) vehicles. The newer hardware presumably has the additional processing power and bandwidth needed to handle recording and saving the two additional video streams during Sentry Mode and Dashcam.
For the time being, owners of HW3 vehicles are not receiving this feature. This includes all vehicles with HW3, even those with AMD Ryzen infotainment systems. If you’re not sure whether your vehicle has HW3 or HW4, you can refer to our FSD hardware guide.
While there’s no doubt that recording two additional camera streams would be more computationally intensive, we hope that Tesla adds the improved Dashcam Viewer to HW3 vehicles in a future update.
Cybertruck Also Missing Improved Sentry Mode
Surprisingly, and most confusing for many - is the fact that the Cybertruck is also not receiving the improved Dashcam Viewer and B-pillar camera recording with this update. This struck us as odd, especially since the Cybertruck is currently the only vehicle with the improved, more efficient version of Sentry Mode.
Every Cybertruck is equipped with HW4 and AMD Ryzen infotainment units, so this clearly isn’t a hardware restriction. It’s possible the more efficient Sentry Mode is playing a role here due to the infrastructure changes. However, we expect Tesla to address this in a future update and eventually release these features for the Cybertruck as well.
Given the Cybertruck’s high visibility and its status as a frequent target for both positive and negative attention, many owners hoped that the Cybertruck would be one of the vehicles to receive this feature.
Adaptive Headlights
Tesla finally started rolling out its adaptive headlights in North America. While the new Model Y already came with the feature when it was released last month, other vehicles with matrix headlights are now receiving the feature in the Spring Update.
All vehicles with matrix headlights are receiving this feature, which includes the new and old Model 3, first-gen Model Y, and the new Model S and Model X.
If you’re not sure if your vehicle includes matrix headlights, check out our guide. What’s interesting here is that older vehicles that were retrofitted with matrix headlights due to an accident or user replacement are also receiving the adaptive headlights feature.
Legacy Model S & Model X
As with most updates, the older legacy Model S and Model X are not receiving all the features included in this update. Unfortunately, some of the features, which include the Blind Spot Camera on the instrument cluster, Save Trunk Height Based on Location and Keep Accessory Power On are limited to the new Model S and X.
Legacy S and X models will receive the Alternative Trip Plans feature, Avoid Highways (Requires Intel MCU) and the Keyboard Languages feature.
These vehicles are also receiving all the features in the Minor Updates section except for the visualization showing how far the door is opened, which is exclusive to the Cybertruck. These additions include improved music search results, contact photos in the phone app, automatic connecting to hotspots, the ability to show third-party chargers, view Supercharger amenities, and various improvements to music services.
While many users will be disappointed not to receive the B-pillar camera recording and Dashcam Viewer improvements, it’s important to remember that Tesla typically does a great job at bringing features to older vehicles, at least with the Model 3 and Model Y. If a feature isn’t added, it’s usually due to a hardware limitation.
![Tesla Semi Keynote: New Features, 46 Charging Sites, Upgraded Battery & More [VIDEO]](https://www.notateslaapp.com/img/containers/article_images/semi/semi-new-features.jpg/c7df4e0d32f8cb0beee080ad201e943b/semi-new-features.jpg)
