Tesla Shares Details of Its Upcoming Wireless Charger [VIDEO]

October 21, 2024

By Karan Singh

Not a Tesla App

Tesla has confirmed that its upcoming wireless charging intended for the Robotaxi is “well above 90%” efficient. While wireless charging for smartphones tends to be about 70-75% efficient in general, a lot of the inefficiency comes from heat and alignment issues.

Tesla appears to have tackled both of these key problems to make wireless charging efficient enough for electric vehicles. Let’s take a look at how, but before we do that, let’s take a look at SAE J2954, the wireless EV charging standard from nearly half a decade ago.

SAE J2954

SAE’s wireless charging standard was created in October 2020. Engineers from SAE and car manufacturers collaborated to build a standard that would work across all EVs. In the end, they figured out a grid-to-battery efficiency of up to 94%. The NACS connector itself is only slightly more efficient—98.55% or so, depending on the temperature of the connector, the cable, the battery pack, and the transformer. That sets a benchmark for what Tesla aims to meet with its wireless charging standard.

What were their key challenges for efficiency? Heat and alignment.

Autopark for Wireless Chargers

Tesla’s Autopark will receive special support for its wireless chargers. Autopark will automatically locate the wireless charging pad and park the vehicle in the best spot for the charging session to begin. As long as the vehicle can accurately place itself over the wireless charger, this solves one of the key issues with wireless charging. It’s not clear whether Tesla is building in any other technology to help the charger find its optimal position. In theory, magnets, like the newer Qi2 standard or Apple’s MagSafe, can help the charger lock in millimeter-perfect positioning.

Having the vehicle locate and park itself over the charger will be far easier than humans trying to accomplish the same feat without software assistance.

Heat Management

A major problem with cell phones and wireless charging is that most do not have active heat dissipation. Instead, they dissipate heat passively into the atmosphere around them. This is especially true due to the small surface area of a cell phone.

In a car, you can transfer heat efficiently to outside the vehicle or into the vehicle’s cabin if it needs heat - the heat pumps on a Tesla are 200-300% efficient at most temperatures. Conversely, on cell phones, battery heat must be limited due to the critical and heat-sensitive components (screen, chips, cameras, sensors) that are all tightly packed into the phone’s battery.

Due to Tesla’s BMS (battery management system), Tesla can keep the vehicle’s batteries and surrounding components in a much more ideal range than cell phones. The system will not only cool down batteries, but also warm them up to produce efficiency and faster charging.

Robotaxi wireless charging

No hands required pic.twitter.com/XL746DkGhb
— Tesla (@Tesla) October 18, 2024

Beam Steering

The final trick under the charge mat is beam steering. In a recent patent, Tesla explained that they intend to steer the beam of wireless energy by altering the induced current across the wireless charging pad’s coils. This will allow them to solve both the alignment and heat issues.

The alignment's precision can be achieved by steering the beam into the optimal position, while it dynamically adjusts between 'cool zones' on the receiving vehicle to prevent overheating—ensuring a steady and efficient rate of charging.

Tesla has thought out the wireless charging problem pretty deeply ever since they bought out Wiferion, and this achievement has been years in the making. We’re hoping they’ll eventually bring wireless charging compatibility to the rest of the lineup. The Cybertruck itself already has the connector prongs to be retrofitted with a wireless charging adapter, and with the Model Y Juniper Refresh around the corner, what better way to prove wireless EV charging works than to include it in the world’s best-selling car?

Tesla’s First Public Megacharger Site Is Coming

February 19, 2025

By Karan Singh

Not a Tesla App

Tesla has officially filed construction permits for its first Semi Megacharger site located near the 405 and 110 freeway corridors in California. This location is just outside Carson, CA, near the Port of Long Beach—one of the busiest ports in the U.S.

The site, located at 19300 S Hamilton Avenue, will primarily feature Megachargers designed to support Tesla’s electric truck fleet. Additionally, Tesla plans to include a small lounge facility with vending machines, restrooms, and other amenities for drivers.

Semi-Public

This site is considered “public” because it’s the first Megacharger location built on publicly accessible land, conveniently situated off a major highway. Previous Megacharger sites have been installed at private corporate facilities, making them inaccessible to the general public.

Despite being in a public location, Tesla plans to keep these Megacharger units exclusive to the Tesla Semi, unlike Superchargers, which are gradually opening to other EV manufacturers. While the Megacharger standard—MCS—is an open standard like NACS, Tesla’s Megachargers will remain off-limits to other trucks.

Megacharger

The Megacharger features a large, square-shaped connector, a sharp contrast to the NACS design. This is due to the unique operating specifications of the MCS connector, which supports charging between 750kW and 1,000kW. This incredible power could potentially add up to 400 miles (of the Semi’s 500-mile range) in just 30 minutes of charging.

With such rapid charging capabilities, the Tesla Semi’s downtime will be drastically reduced, allowing for more efficient operations and less time spent charging.

Since Tesla’s Semi factory is now underway, we expect to see additional Megacharger sites being built in the future. The Semi has also been receiving ongoing improvements, including a specialized European Development Platform.

With volume production expected to begin in late 2025 or early 2026, the Tesla Semi is poised to become one of the company’s biggest products. We’re excited to see more Semis on the road—and hopefully, many more Megacharger sites in the near future.

Tesla Cybertruck Earns 5-Star Safety Rating in NHTSA Crash Tests

February 19, 2025

By Karan Singh

Sawyer Merritt

The Cybertruck has finally received an official crash safety rating—and to the surprise of many critics, it’s outstanding. Tesla has announced that the Cybertruck earned a 5-star Overall Crash Safety Rating from the NHTSA.

Even more remarkable, the Cybertruck holds the lowest overall probability of injury and the lowest rollover risk of any pickup truck ever tested by the agency. Skeptics have long questioned its safety, arguing that its rigid design lacks crumple zones and could endanger occupants. But these results prove otherwise. Let’s break it down!

The Test

Sawyer Merritt

The 2024 and 2025 Tesla Cybertruck—both the AWD and Cyberbeast variants—were tested under the New Car Assessment Program (NCAP) standards, which evaluate vehicle crashworthiness and restraint systems through various types of impacts.

Tesla has long prioritized safety, not only through advancements in active safety with FSD but also by designing vehicles with robust structural protection. The Cybertruck incorporates the Cybercell structural battery and internal crash cans to improve crash performance.

Its front and rear Gigacastings are engineered to channel impact forces into internal structures that collapse, functioning similarly to crumple zones in traditional vehicles. This design directs energy away from occupants and critical components. First, the internal crash cans absorb the force, and if needed, the Gigacasting collapses—both of which are replaceable, making the Cybertruck more repairable when compared to other modern vehicles.

Euro NCAP

Sawyer Merritt

While the Cybertruck has now earned a North American NCAP rating, it has yet to receive a Euro NCAP rating. Tesla has not submitted the Cybertruck for testing in Europe, as its sharp-edged stainless steel panels do not currently meet European regulations.

Tesla does plan to bring the Cybertruck to Europe eventually, but doing so will likely require significant exterior modifications to soften its edges and comply with safety standards. Once those changes are made, the Cybertruck should have no trouble acing the Euro NCAP tests.

After such a long wait, it’s great to finally see the Cybertruck’s crash test results—and with a 5-star rating, Tesla deserves credit for its impressive engineering. Safety has always been a cornerstone of Tesla’s design philosophy, and the Cybertruck continues that tradition as one of the safest vehicles on the road.