Tesla has confirmed its V4 Superchargers will be capable of 350kW. Currently, V4 Superchargers are limited to 250kW, the same as its V3 counterparts.
Tesla confirmed this information in a planning submission for a charging site in Swindon, UK. The submission also contained images of the charging stalls, which confirmed a payment screen and an oval base. The submission also states, “All charging units are universal and can be used by an EV user.” EV owners that want to use Tesla’s “ultra-rapid” V4 Superchargers will be able to take advantage of them, despite not having the Tesla app or account.
Maximum Charging Speeds For V4
V4 Superchargers are currently limited to 250kW, but with the increase to 350kW, we'll see much higher burst speeds. Charging at 350kW could allow Teslas to charge at up to 1,400 miles per hour, or 115 miles in just five minutes. While these are tremendous speeds, your vehicle will not charge the entire time at these high speeds.
To achieve the full 350kW speed, your battery will need to be pre-conditioned and at a low state of charge. For Teslas, this is between about 5 to 30 percent. If those criteria are met, your vehicle will ramp up to its maximum charging speed for a short period of time.
As your vehicle gets closer to finish charging, the speeds will slow down to preserve battery health and longevity.
Faster Future Charging
Tesla doesn't plan to stop at 350kW. At the Tesla Semi unveiling event, CEO Elon Musk and Dan Priestley, Tesla Semi program manager, confirmed that the Cybertruck will use the same charging technology as the Tesla Semi, allowing it to accept 1MW of DC fast-charging. This will apparently be possible because of Tesla’s innovative “immersion cooling technology.”
V4 Superchargers Make Appearance at Goodwood Festival
A few weeks ago, the V4 Superchargers were on full display at the Goodwood Festival of Speed in the UK. The Tesla Owners UK Twitter account shared close-up images of the new Superchargers, which interestingly had space for a screen and contactless payment terminal.
Tesla allows owners to seamlessly pay for their charging sessions. Their car is linked to their Tesla account and credit card, which is charged upon the completion of a session. When Tesla started opening Superchargers to non-Teslas, these owners needed a way to pay for their EV juice. They added the “Charge Your Non-Tesla,” which guides non-Tesla owners to create a Tesla account and add their payment information.
However, the addition of the contactless payment device in V4 removes the need for an app entirely. Non-Tesla owners may be able to simply pull up to a Supercharger, swipe their card, and charge.
First V4 Supercharger Opens
Tesla opened its first V4 Supercharger in Harderwijk, Netherlands earlier this year. The site has 16 stalls and includes longer charging cables to make it easier for non-Teslas to charge. The first V4 site was originally going to be in Danvers, Massachusetts.
European regulations state that an app shouldn’t be required to use an EV charging station, which is likely why V4 stations will have the contactless payment terminal.
Tesla’s been on a roll with Supercharger improvements lately, from the 325kW charging update for the Cybertruck, to 500kW with V4 Superchargers coming next year. While those improvements have been limited to the Cybertruck, Tesla didn’t put all their focus on their new flagship vehicle, but looked at their more affordable vehicles as well.
LFP Battery Heating
Tesla’s Superchargers can now heat LFP Batteries - those that are in the Model 3 and Model Y Rear Wheel Drive variants. This applies to Long Range and Standard Range models, which saw a limited run. This is another update included as part of the 2024 Tesla Holiday Update - which really arrived with a lot of unannounced new features and capabilities.
The change is pretty interesting - Superchargers of the V3 and V4 variety can now pre-heat batteries for Model 3 and Model Y vehicles equipped with LFP battery packs. That means those vehicles are able to get back on the road faster when it's extremely cold. Of course, Tesla still advises you to precondition before you arrive, saving drivers time and money.
Max de Zegher, Tesla’s Director of Charging, also commented on the new feature. Essentially, Tesla is inducing an AC (alternating) ripple current through the battery to warm it up. Keep in mind that Superchargers are DC charging. That means it is possible to get a cold-soaked LFP vehicle on the road 4x faster than before, assuming that it didn’t precondition at all and that it is in the worst-case scenario (below 0ºF).
In essence, Tesla is using some engineering magic to turn the circuits inside the LFP battery into an electric heater - and powering that heater through the Supercharger. An AC ripple current is a small oscillation in the DC charging current that generates heat through electrical resistance, warming up the battery. Those ripples are a byproduct of converting AC to DC and back - so Tesla is using the onboard charger to induce those ripples to warm up the battery. Definitely an innovative technique that’s really only possible with the versatility of the NACS connector.
We’re hoping Tesla can implement this across their full lineup of vehicles, but we’ll have to wait and see how it is trialed across LFP vehicles first and if it is even possible on vehicles with 2170 or 4680 battery packs.
Tesla launched two FSD updates simultaneously on Saturday night, and what’s most interesting is that they arrived on the same software version. We’ll dig into that a little later, but for now, there’s good news for everyone. For Hardware 3 owners, FSD V12.6.1 is launching to all vehicles, including the Model 3 and Model Y. For AI4 owners, FSD V13.2.4 is launching, starting with the Cybertruck.
FSD V13.2.4
A new V13 build is now rolling out to the Cybertruck and is expected to arrive for the rest of the AI4 fleet soon. However, this build seems to be focused on bug fixes. There are no changes to the release notes for the Cybertruck with this release, and it’s unlikely to feature any changes when it arrives on other vehicles.
FSD V12.6.1 builds upon V12.6, which is the latest FSD version for HW3 vehicles. While FSD V12.6 was only released for the redesigned Model S and Model X with HW3, FSD V12.6.1 is adding support for the Model 3 and Model Y.
While this is only a bug-fix release for users coming from FSD V12.6, it includes massive improvements for anyone coming from an older FSD version. Two of the biggest changes are the new end-to-end highway stack that now utilizes FSD V12 for highway driving and a redesigned controller that allows FSD to drive “V13” smooth.
It also adds speed profiles, earlier lane changes, and more. You can read our in-depth look at all the changes in FSD V12.6.
Same Update, Multiple FSD Builds
What’s interesting about this software version is that it “includes" two FSD updates, V12.6.1 for HW3 and V13.2.4 for HW4 vehicles. While this is interesting, it’s less special when you understand what’s happening under the hood.
The vehicle’s firmware and Autopilot firmware are actually completely separate. While a vehicle downloading a firmware update may look like a singular process, it’s actually performing several functions during this period. First, it downloads the vehicle’s firmware. Upon unpacking the update, it’s instructed which Autopilot/FSD firmware should be downloaded.
While the FSD firmware is separate, the vehicle can’t download any FSD update. The FSD version is hard-coded in the vehicle’s firmware that was just downloaded. This helps Tesla keep the infotainment and Autopilot firmware tightly coupled, leading to fewer issues.
What we’re seeing here is that HW3 vehicles are being told to download one FSD version, while HW4 vehicles are being told to download a different version.
While this is the first time Tesla has had two FSD versions tied to the same vehicle software version, the process hasn’t actually changed, and what we’re seeing won’t lead to faster FSD updates or the ability to download FSD separately. What we’re seeing is the direct result of the divergence of HW3 and HW4.
While HW3/4 remained basically on the same FSD version until recently, it is now necessary to deploy different versions for the two platforms. We expect this to be the norm going forward, where HW3 will be on a much different version of FSD than HW4. While each update may not include two different FSD versions going forward, we may see it occasionally, depending on which features Autopilot is dependent on.
Thanks to Greentheonly for helping us understand what happened with this release and for the insight into Tesla’s processes.
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