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Tesla’s liquid-cooled charging connector patent paves way for the Semi’s Megachargers
A recently published patent application from Tesla suggests that the electric car maker is continuing in its efforts to improve its already-stellar Supercharger Network. The design outlined in the document, which features a liquid-cooled charging connector, can potentially pave the way for a more ambitious charging infrastructure, perhaps one that can specifically cater to the all-electric Semi’s Megacharger Network.
During the all-electric truck’s unveiling, CEO Elon Musk mentioned that the Semi will be able to replenish as much as 400 miles of range in as little as 30 minutes thanks to a network of Megachargers. Neither Musk nor Tesla provided the specs of the Megacharger during the vehicle’s unveiling, though speculations were high that network might provide a power output that is several times more powerful than the company’s Supercharger V2 Network, which had an output of around 120 kW then (Supercharger V2 stations have since been improved to 150 kW).
Being a large vehicle, the Semi requires a lot of power for its charging needs, involving the rapid transfer of mass amounts of electricity in a very short period of time without encountering any heating issues. This is a key concept outlined by Tesla in its recently published patent, titled “Liquid-Cooled Charging Connector,” which involves the use of a liquid cooling system on a charging connector itself. Tesla describes its concept in the discussion below.
“To transfer energy faster and decrease charging times, the cable and charging connector must be capable of withstanding high current loads. Current charging connectors are limited in the current loads that they can support as their ability to dissipate heat is limited. Thus, there is a need for a new charging connector to solve the aforementioned problems.
“The present disclosure related to a new charging connector. The charging connector has a first electrical socket and a second electrical socket. A first sleeve is concentrically coupled to the first electrical socket and a second sleeve is concentrically coupled to the second electrical socket. A manifold assembly encloses the first and second electrical sockets and the first and second sleeves, such that the first and second sleeves and manifold assembly create a hollow interior space there between. The manifold assembly has an inlet conduit and an outlet conduit such that inlet conduit, interior space, and outlet conduit together create a fluid flow path.
“Cooling fluid flows through the fluid flow path and cools the charging connector. During operation, the cooling fluid bifurcates into a first fluid stream which flows around the first sleeve, and a second fluid stream which flows around the second sleeve. The first and second fluid streams combine upstream of the outlet conduit. The first sleeve encloses the first electrical socket, and the second sleeve encloses the second electrical socket. The cooling sleeves are made from a thermally conducting material such that heat generated by electrical sockets can be removed by the cooling fluid. In embodiments, this thermally conducting material is a thermally conductive plastic material.”
Tesla notes that its liquid-cooled supercharger connector does not only allow faster charging; it also makes the routing of wires in a charging connector much more efficient. This means that Tesla’s Supercharger connectors could eventually be smaller and more compact despite being capable of greater output. An example of this appears to be hinted at by Supercharger V3’s liquid-cooled cables, which are smaller and more compact than those used in Tesla’s V2 Network.
“Cooling fluid absorbs thermal energy from heat in the electrical sockets 404, 406. Sleeves 410, 412 are made of a thermally conducting, electrically insulating material. Heat from the electrical sockets 404, 406 is transferred to cooling fluid through sleeves 410, 412. After flowing around hollow interior space 416, the first fluid stream 804 and the second fluid stream 806 combine together upstream of outlet conduit 514 and flow outside of manifold assembly 414 through outlet conduit 514. Cooling fluid flowing out of manifold assembly 414 through outlet conduit 514 may be received by a reservoir (not shown) which may provide for heat exchanging arrangements. A heat exchanger may be provided to take away heat absorbed by cooling fluid. After rejecting absorbed heat, the cooling fluid may be recirculated back to inlet conduit 512 for further cooling of charging connector 210.
“FIG. 9 shows another component included by charging connector 210. A Printed Circuit Board Assembly (PCBA) 902 is thermally coupled to charging connector 210. In embodiments, PCBA 902 is a two-part structure. A first part of PCBA 904 is coupled to charging connector 210 such that the first part of PCBA 904 sits on top of electrical sockets 404, 406. A second part of PCBA 908 is connected to the first part of PCBA 904 through a rigid-flex PCB construction, or other similar interconnects. The two-part structure of PCB A 902 allows for a more efficient routing of electrical wires of charging connector 210, and overall size of charging connector 210 may be conveniently reduced.”
Tesla’s Superchargers are among the fastest and most expansive electric vehicle charging infrastructures in the auto industry. In keeping with its spirit, the company has made it a point to never stop innovating, as exhibited by the company’s debut and ongoing ramp of its Supercharger V3 Network. This could ultimately pay off for Tesla, whose lead in the electric vehicle race might potentially increase even more.
Such innovations appear to be required of the company, especially with the rollout of ambitious EVs such as the Semi, a vehicle with a different charging infrastructure compared to Tesla’s existing lineup of electric cars. That being said, Tesla nevertheless deserves credit for pushing the envelope and staying on top of its innovations. In the electric vehicle race, after all, a liquid-cooled charging connector could end up making the difference between the fast-charging capabilities of the Tesla Semi and rivals from Daimler and Nikola.
A link to the full text of Tesla’s liquid-cooled charger connector patent could be accessed here.
News
Tesla rolls out new life-saving feature for kids in Europe
On average, 37 children die every year from being left in vehicles unattended.

Tesla is rolling out a new life-saving feature in the European market, one that has been available in the United States for some time and can be considered potentially invaluable.
One of the most preventable causes of death for children is being left in cars unattended. On average, 37 children die every year after being left in hot vehicles. The cause of death is usually heatstroke, and it is incredibly avoidable.
Tesla rolls out new crucial safety feature aimed at saving children
However, there are instances where kids are left in vehicles and lose their lives, something that many companies have tried to fight with alerts and features of their own.
Tesla is one of them, as it has rolled out features like ultrasonic sensors to detect heartbeats, interior cameras to detect movement, and alerts to notify parents if they leave someone in the car.
A few months ago, Tesla rolled out a new feature called “Child Left Alone Detection” in the United States. It was described as:
“If an unattended child is detected, the vehicle will flash the exterior indicator lights, play an alert tone, and send a notification to your Tesla app. This will repeat at regular intervals until you return to your vehicle. Cabin data is processed locally and is not transmitted to Tesla.
This feature is enabled by default. To disable, go to Controls > Safety > Child Left Alone Detection.”
This feature was only rolled out in the U.S. at the time. It is now making its way to the European market, according to Not a Tesla App, which detected the rollout in the 2025.32.6 software update.
The rollout of this feature could specifically change many unfortunate situations. For many of us, it seems hard to think about leaving something as precious as another human life in a hot car. Many of us won’t leave our vehicles without our cell phones, so it seems unlikely that someone would do it without a child.
News
Tesla gets another NHTSA probe, this time related to door handles
“Although Tesla vehicles have manual door releases inside of the cabin, in these situations, a child may not be able to access or operate the releases even if the vehicle’s driver is aware of them.”

Tesla is facing another investigation into its vehicles by the National Highway Traffic Safety Administration (NHTSA), this time related to an issue with its door handles.
In a new Open Investigation named “Electronic door handles become inoperative,” the NHTSA says that it has received nine complaints from owners of the 2021 Tesla Model Y stemming from “an inability to open doors.”
These issues were reported after “parents exited their vehicle after a drive cycle in order to remove a child from the pack seat or placing a child in the back seat before starting a drive cycle.” Parents said they were “unable to reopen a door to regain access to the vehicle.”
Tesla door handles become unlikely hero as they stump road rager
Four of the nine complaints ended with having to break a window to regain access to the cabin.
🚨 Model Year 2021 Tesla Model Y vehicles are under a preliminary investigation by the NHTSA due to a potential issue with door handles, with nine owners reporting an inability to open doors from the outside
“The most commonly reported scenarios involved parents exiting the… pic.twitter.com/u0qBBiu9LT
— TESLARATI (@Teslarati) September 16, 2025
The NHTSA goes on to explain that, while Teslas do have a manual door release inside the cabin, a child may not be able to access it:
“Although Tesla vehicles have manual door releases inside of the cabin, in these situations, a child may not be able to access or operate the releases even if the vehicle’s driver is aware of them. As a result, in these instances, an occupant who remains inside a vehicle in this condition may be unable to be rapidly retrieved by persons outside of the vehicle.”
It appears that the agency is attributing the issue to a low voltage in the vehicle’s 12V DC battery. This would mean there needs to be some sort of notification to the driver that the battery is running low on power and should be replaced to avoid this issue.
The NHTSA estimates that 174,290 vehicles are potentially impacted by this issue. It plans to assess the scope and severity of the condition, the agency says. The NHTSA also wants to see what approach Tesla uses to supply power to door locks and the reliability of the applicable power supplies.
News
Tesla won’t implement strange Grok character as Musk dispels rumor
It is nice to see that Tesla is not forcing this kind of character upon owners of their vehicles, especially considering that many people had a real problem with it.

Tesla is not going to implement a strange character as a Grok assistant in its vehicles, as CEO Elon Musk dispelled the rumor, which seemed to truly invoke some quite polarizing reactions.
Yesterday, there was some controversy within the Tesla community as rumors of a Grok assistant, named Mūn (pronounced like Moon), being implemented into the vehicles started to circulate.
It had some legitimacy. It was initially posted by an employee, and it appeared to be a relatively confirmed development.
However, it really did rub some people the wrong way. Mūn was an Anime-style female dressed in promiscuous clothing, so it was not everyone’s style, and I’m sure not everyone’s significant other’s cup of tea. It seemed a very strange decision to add it, especially considering that, at the time, there was no confirmation to dispel the arrival of the Grok assistant.
That was until Tesla CEO Elon Musk stepped in to put the speculation to bed once and for all.
🚨 Elon has confirmed the Grok assistant rumor with the character Mūn is untrue https://t.co/EC7absBZSj pic.twitter.com/1Skhvy9USQ
— TESLARATI (@Teslarati) September 16, 2025
It was somewhat strange that this type of issue arose in the first place, but given that it was initially released by an employee, the entire situation is self-explanatory.
It is nice to see that Tesla is not forcing this kind of character upon owners of their vehicles, especially considering that many people had a real problem with it. Many owners did not shy away from the fact that they would like the option to opt out:
I want something family friendly…like an Optimus avatar or something.
— FSD (Unsupervised) Test Pilot (@j32pmxr) September 16, 2025
For now, Grok remains a part of Tesla vehicles, and personally, it is very nice to have in my Model Y to answer some quick questions I might have or even to entertain some people in the car.
Nevertheless, I am relieved I won’t have this character forced upon me in my vehicle.
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