Tesla opens up it's charging connector to other manufacturers
Tesla
Tesla removed all the patents in the lobby of its Palo Alto headquarters prompting Elon Musk to explain in a blog, "They have been removed, in the spirit of the open source movement, for the advancement of electric vehicle technology." The post is from 2014; he continued, "Tesla Motors was created to accelerate the advent of sustainable transport." That policy has been held, but some designs have not been for public consumption, including its industry-leading charging connector — until now.
A new post on the Tesla website reiterates Musk's words from eight years ago. "In pursuit of our mission to accelerate the world's transition to sustainable energy, today we are opening our EV connector design to the world," states the company. "We invite charging network operators and vehicle manufacturers to put the Tesla charging connector and charge port, now called the North American Charging Standard (NACS), on their equipment and vehicles."
Strategic Play
It is a generous move but also a clever, strategic play. There is no doubt that electric vehicles are here to stay. The question is, what will the nozzle be on the gas pump of the future? With more private companies getting into the EV charging game, this move makes it easy for them to add the Tesla connector to their equipment. Tesla has already been in discussions with some of those companies. The post states, "network operators already have plans in motion to incorporate NACS at their chargers, so Tesla owners can look forward to charging at other networks without adapters.
The company says that its connector, the NACS, is North America's most common charging standard. Tesla states, "NACS vehicles outnumber CCS two-to-one, and Tesla's Supercharging network has 60% more NACS posts than all the CCS-equipped networks combined." EV owners who don't have NACS will have fewer options to charge up. Car manufacturers are already racing to get into the EV game and don't also need to try to play catch up to Tesla's already well-established charging network. Tesla states, "we look forward to future electric vehicles incorporating the NACS design and charging at Tesla's North American Supercharging and Destination Charging networks."
It's ingenious to drop the Tesla brand off and name it the North American Charging Standard. It will make it much easier for competing brands to swallow their pride and use superior technology. The system is the most tested EV charger in the world, and the company reports it has "20 billion EV charging miles to its name." It is also far better than the Combined Charging System (CCS 1), offering twice the power in half the size.
A petition to the U.S House of Representatives was started in July 2022, asking for the Tesla connector to be the charging standard for the U.S. A solar-powered car company named Aptera is behind the Change.org petition that has more than 40,000 signatures. It links to reports showing the Tesla connector wins in every category tested.
While CCS 2 has become the charging standard in Europe, the market is wide-open in North America where the CCS 1 connector has not yet taken off.
There is a comment on the Change.org website worth noting. Eric Stewart posted, "The Tesla connector is what engineers would choose if politics didn't make these things about ego." Now, if NACS is not the standard, it will be crystal clear that Stewart is right.
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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.
