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Tesla Battery Day can mean doomsday for legacy carmakers shifting to electric
Tesla is expected to hold its Battery Day in April as Elon Musk announced during the company’s Q4 earnings call. The chief executive said the company has a “compelling story” to tell about things that can “blow people’s minds.” These statements do not only pique the interest of the electric vehicle community; they also hint of updates that can spell disaster for legacy car manufacturers trying to catch up with Tesla in the electric vehicle market.
Batteries are key to staying on top of the electric vehicle segment and Tesla is the leader of the pack when it comes to batteries and energy efficiency. This has been validated by organizations such as Consumer Reports and even by competitors who go deep into their pockets and go as far as cutting their workforces to catch Tesla in terms of hardware, software, and battery technology.
Come Tesla Battery Day, the obvious would be made more obvious. Tesla could further widen the gap and set itself apart from the rest, not just as the maker of the Model 3, Model Y, Cybertruck or other vehicles in its lineup but as an energy company.
Mass Production Of Cheaper Batteries
Batteries are among the most expensive components of an electric vehicle. This is true for Tesla and other electric vehicle manufacturers. With pricey batteries, car manufacturers cannot lower prices of their vehicles and therefore cannot encourage the mass adoption of zero-emission cars.
Tesla has reportedly been running its “Roadrunner” secret project that can lead to mass production of battery cells at $100/kWh. According to rumors, Tesla already has a pilot manufacturing line in its Fremont facility that can produce higher-density batteries using technology advancements developed in-house and gained through the Maxwell acquisition. With a $100/kWh battery, the prices of Tesla’s vehicles can be competitive even without government subsidies.
Aside from the Roadrunner project, Tesla has also been setting itself up to succeed in the battery game and dominate the market with its partnerships. It has a long relationship with Panasonic that helped it manufacture batteries in Giga Nevada, but has also signed battery supply agreements with LG Chem and CATL in China.
Battery prices have been going down significantly in the last decade. According to BloombergNEF, the cost of batteries dropped by 13% last year. From $1,100/kWh in 2010, the price went down to around $156.kWh in 2019. This is predicted to come close to the target $100/kWh by 2023. If Tesla achieves the $100/kWH cost sooner than the rest, it will give the company a massive advantage over its competitors and that will eventually lead to better profit margins.
Aside from cheaper batteries, the increased battery production capacity is also key in bringing products such as the all-electric Cybertruck and Tesla Semi to life.
“The thing we’re going to be really focused on is increasing battery production capacity because that’s very fundamental because if you don’t improve battery production capacity, then you end up just shifting unit volume from one product to another and you haven’t actually produced more electric vehicles… make sure we get a very steep ramp in battery production and continue to improve the cost per kilowatt-hour of the batteries,” Musk said during the Q4 2019 earnings call.
Enhanced Tesla Batteries
Tesla already has good batteries through its years of research, experimentation, and partnerships with battery producers. It has invested a good amount of money and effort to make sure it’s leading the battery game.
This advantage is made very clear on how Tesla was able to produce the most efficient electric SUV today in the form of the soon-to-be-released Model Y crossover with an EPA rating of 315 miles per single charge versus the Porsche Taycan with a range of around 200 miles.
With the acquired technologies from companies such as Maxwell and recently a possible purchase of a lithium-ion battery cell specialist startup in Colorado, Tesla demonstrates it’s not stopping its efforts to perfect its battery technology. Maxwell manufactures battery components and ultracapacitors and it’s just a matter of time before Tesla makes use of these technologies.
When asked about Maxwell’s ultracapacitor technology during the Q4 2019 earnings call, Musk said, “It’s an important piece of the puzzle.”
Musk also referenced the Maxwell acquisition during an extensive interview at the Third Row Podcast. “It’s kind of a big deal. Maxwell has a bunch of technologies that if they are applied in the right way I think can have a very big impact,” Musk said during a Third Row Podcast interview.
There are rumors out of China claiming that Tesla may come up with a battery that combines the best traits of Maxwell’s supercapacitors and dry electrode technologies. This could mean batteries that could charge faster, pack more energy density, and last longer.
Controlling Battery Supply
Knowing what works and what doesn’t for electric car batteries puts Tesla on top of the game. Of course, add to that what could be the best battery management system that makes Tesla vehicles among the most efficient if not the best in utilizing their batteries. With the advantage on hardware and software fronts, the thought of Tesla becoming a battery supplier is far from being a crazy idea.
Its competitors such as Audi and Jaguar have recently expressed concerns about their battery supplies as they both depend on LG Chem. Tesla– aside from its partnerships with Panasonic, LG Chem, and CATL — pushes the limit to develop its new battery cells in-house and that opens up a lot of possibilities for Tesla as a business.
“It would be consistent with the mission of Tesla to help other car companies with electric vehicles on the battery and powertrain front, possibly on other fronts. So it’s something we’re open to. We’re definitely open to supplying batteries and powertrains and perhaps other things to other car companies,” Musk was quoted as saying.
Recent job postings for a cell development engineer and equipment development engineers suggest that Tesla might actually be considering the idea of introducing a battery line of its own. But of course, the next-generation batteries would be first used for its vehicle lineup. Once it meets that demand and hits economies of scale, one can only imagine how Tesla could play the important role of supplying batteries to other carmakers.
Whether Tesla would announce cheaper batteries, enhanced electric car batteries, or give updates about its efforts, Battery Day in April will most definitely be worth the wait. For other car manufacturers, time would pause during that day as they listen to what Elon Musk and his team will say. And most likely, after the company talk, other car manufacturers will have to go back to their drawing boards once more in an attempt to catch up.
News
Tesla Semi gets new product launch as mass manufacturing hits Plaid Mode
While the 1.2 MW Megacharger handles quick 30-minute en-route boosts, the Basecharger serves as a reliable overnight solution for longer dwell times at warehouses, distribution centers, fleet yards, and even, potentially, homes.
The Tesla Semi is getting a new production launch as mass manufacturing on the all-electric truck is gearing up to hit Plaid Mode.
Tesla has introduced a game-changing addition to its commercial charging lineup with the new 125 kW Basecharger for Semi. Launched this week as part of the new “Semi Charging for Business” program, this compact unit is purpose-built for depot and overnight charging of Tesla Semi trucks.
While the 1.2 MW Megacharger handles quick 30-minute en-route boosts, the Basecharger serves as a reliable overnight solution for longer dwell times at warehouses, distribution centers, fleet yards, and even, potentially, homes.
Our new 125 kW Basecharger is designed for longer dwell times and overnight charging of Semis. It’s the “home charging” for heavy-duty fleets.
It features a fully integrated design that eliminates the need for a separate AC-to-DC cabinet, simplifying installation. The 6 meter… https://t.co/ovy1C4PsRW pic.twitter.com/vBUCNMzs57
— Tesla Charging (@TeslaCharging) May 1, 2026
Delivering up to 60 percent of the Semi’s range in roughly four hours, perfect for overnight top-ups during mandated driver rest periods or while trucks are loaded or unloaded. Its fully integrated design eliminates the need for bulky separate AC-to-DC cabinets.
Tesla engineers tucked one of the power modules from a V4 Supercharger Cabinet directly inside the sleek post, resulting in a compact footprint. It also features a six-meter cable for layout flexibility. This is one thing that must have been learned through the V4 Supercharger rollout.
Installation and operating costs drop dramatically thanks to daisy-chaining. Up to three Basechargers can share a single 125 kVA breaker, slashing electrical infrastructure requirements. The unit outputs 150 amps continuous across an 180–1,000 VDC range, matching the Semi’s high-voltage architecture while supporting the MCS 3.2 standard.
Tesla Semi sends clear message to Diesel rivals with latest move
Priced from $40,000 for a minimum order of two units, the Basecharger is far more affordable than the $188,000 Megacharger setup for two posts. Deliveries begin in early 2027. Buyers also receive Tesla’s full network-level software, remote monitoring, maintenance, and a guaranteed 97 percent or higher uptime—critical for fleet reliability.
This launch arrives as Tesla accelerates high-volume Semi production at its Nevada factory, targeting 50,000 units annually. By pairing affordable depot charging with ultra-fast highway options, Tesla removes one of the biggest obstacles to electrifying Class 8 trucking: infrastructure cost and complexity.
Fleet operators stand to gain lower electricity rates during off-peak hours, dramatically reduced maintenance compared to diesel, and quieter yards at night. The Basecharger isn’t just another charger—it’s the practical bridge that makes large-scale electric semi adoption economically viable.
With the Basecharger handling “home” duties and Megachargers powering the road, Tesla is delivering a complete ecosystem that could finally tip the scales toward zero-emission freight. For trucking companies ready to go electric, the future just got a whole lot more charger-friendly.
News
Tesla revises new Intervention Reporting system with Full Self-Driving
It is the second revision to the program as Tesla is trying to make it easier to decipher driver and owner complaints, but also to make it easier to report issues within the suite for them.
Tesla has revised its new Intervention Reporting system within the Full Self-Driving suite that now categorizes reasons that drivers take over when the semi-autonomous driving functionality is active.
It is the second revision to the program as Tesla is trying to make it easier to decipher driver and owner complaints, but also to make it easier to report issues within the suite for them.
With the initial rollout of Full Self-Driving v14.3.2, Tesla included a new reporting menu that gave four options for an intervention: Preference, Comfort, Critical, and Other. A slightly revised version of Full Self-Driving with the same ID number then came out a few days later, changing the “Other” option to “Navigation” after numerous complaints from owners.
It appears Tesla has listened to those owners once again and has not only made it smaller and more compact, but also easier to report the issues than previously.
The new menu is now embedded within the request for a Voice Memo from Tesla, and does not block the entire screen, as the second rollout of the menu was:
Thank you Tesla! The new intervention screen is much better! @Tesla_AI pic.twitter.com/1lea9G27N1
— Dirty Tesla (@DirtyTesLa) May 1, 2026
There will likely be one additional revision to the Interventions Menu, as we have coined it here at Teslarati.
Unfortunately, at times, there are no reasons for an intervention at all, but the menu does not give an option to simply disregard the reporting and forces the driver to choose one of the options. We, as well as other notable Tesla influencers, indicated that there is not always a reason for an intervention.
For example, I choose to back into my parking spot in my neighborhood at least some of the time for the reason of charging. I usually hit “Preference” for this, but it sends a false positive to Tesla that there was a reason I took over that I was unhappy with.
Tesla begins probing owners on FSD’s navigation errors with small but mighty change
Instead, I’m simply performing a maneuver that is not yet available to us. When Tesla allows drivers to choose the orientation at which their car enters a parking spot, I and many others won’t have to deal with this menu.
Others are still skeptical that it will help resolve any issues whatsoever and prefer to disregard the menu altogether. It does seem as if Tesla will issue another revision in the coming days to allow this to happen.
Lifestyle
California hits Tesla Cybercab and Robotaxi driverless cars with new law
California just gave police power to ticket driverless cars, including Tesla’s Cybercab fleet.
California DMV formally adopted new rules on April 29, 2026 that allow law enforcement to issue “notices of noncompliance”, or in other words ticket autonomous vehicle companies when their cars commit moving violations. The rules take effect July 1, 2026 and officially closes a regulatory gap that previously let driverless cars operate on public roads with nearly no traffic enforcement consequences.
Until now, state traffic laws only applied to human “drivers,” which meant that when no person was behind the wheel, police had no mechanism to issue a ticket. Officers were limited to citing driverless vehicles for parking violations only. A well-known example came in September 2025, when a San Bruno officer watched a Waymo robotaxi execute an illegal U-turn and could do nothing but notify the company.
Under the new framework, when an officer observes a violation, the autonomous vehicle company is effectively treated as the driver. Companies must report each incident to the DMV within 72 hours, or 24 hours if a collision is involved. Repeated violations can result in fleet size restrictions, operational suspensions, or full permit revocation. Local officials also gained new authority to geofence driverless vehicles out of active emergency zones within two minutes and require a live emergency response line answered within 30 seconds.
Tesla Cybercab ramps Robotaxi public street testing as vehicle enters mass production queue
California’s new enforcement rules arrive at a pivotal moment for Tesla. The company is ramping Cybercab production at Giga Texas toward hundreds of units per week, targeting at least 2 million units annually at full capacity, while simultaneously pushing to expand its Robotaxi service to dozens of U.S. cities by end of 2026. Unsupervised FSD for consumer vehicles is currently targeted for Q4 2026, and when it arrives, Tesla’s fleet may not have a human to absorb legal accountability, under the July 1 rules.
Tesla has confirmed plans to expand its Robotaxi service to seven new cities in the first half of 2026, including Dallas, Houston, Phoenix, Miami, Orlando, Tampa, and Las Vegas, with the service already running without safety drivers in Austin. Musk has said he expects robotaxis to cover between a quarter and half of the United States by end of year.
Tesla Semi gets new product launch as mass manufacturing hits Plaid Mode
Tesla revises new Intervention Reporting system with Full Self-Driving
