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Tesla’s new battery add-on aims to increase capacity, decrease install time

Credit: Tesla

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Tesla has launched a new product as part of its home energy storage portfolio, effectively allowing Powerwall 3 owners to upgrade their system’s capacity in less time.

On Tuesday, Tesla launched Powerwall 3 expansion units in the U.S., announcing the scalable solution alongside a short video demonstration on X. In the video, Tesla shows the difference between the installation times of multiple Powerwall 3 units, wall-mounted, and stacked expansion units, highlighting that the latter offers increased capacity with less hardware and a shorter install time.

Tesla says buyers can add up to three expansion units per single Powerwall to boost capacity, and it also highlights that the hardware can extend outage protection and further increase savings on owners’ electricity bills without requiring additional Powerwall 3 units. You can check out the short video below, highlighting that the installation of a stacked expansion unit with the Powerwall 3 took just 22 minutes, compared to 28 and 45 minutes of the respective wall-mounted expansion and non-expansion multi-Powerwall install.

Tesla now lists the expansion option on its website under the “Scalable” section of its Powerwall 3 specs, saying they’re available anytime with a 40.5 kWh max addition per expansion unit. Currently, the Powerwall 3 is available in the U.S., Canada, Germany, the UK, and Western Australia, though Tesla hasn’t yet debuted the expansion units outside the U.S.

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The company first launched the Powerwall 3 in the U.S. in February, before beginning its rollout to Canada and countries beyond North America in the following months. The Powerwall 3 expansion units should make it even easier to deploy scalable energy storage, given its benefits and lower overall installation time.

The launch of the Powerwall expansion units also comes after Tesla last week announced that over 750,000 Powerwalls had been installed around the world, 100,000 of which have participated in the company’s Virtual Power Plant (VPP) programs. In addition, Tesla said that it deployed a record number of Powerwall installs in the U.S. in the last week of Q3 as it continues to ramp up rollout.

Tesla Energy is living up to Elon Musk’s predictions

Need accessories for your Tesla? Check out the Teslarati Marketplace:

What are your thoughts? Let me know at zach@teslarati.com, find me on X at @zacharyvisconti, or send us tips at tips@teslarati.com.

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Zach is a renewable energy reporter who has been covering electric vehicles since 2020. He grew up in Fremont, California, and he currently lives in Colorado. His work has appeared in the Chicago Tribune, KRON4 San Francisco, FOX31 Denver, InsideEVs, CleanTechnica, and many other publications. When he isn't covering Tesla or other EV companies, you can find him writing and performing music, drinking a good cup of coffee, or hanging out with his cats, Banks and Freddie. Reach out at zach@teslarati.com, find him on X at @zacharyvisconti, or send us tips at tips@teslarati.com.

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SpaceX IPO is coming, CEO Elon Musk confirms

However, it appears Musk is ready for SpaceX to go public, as Ars Technica Senior Space Editor Eric Berger wrote an op-ed that indicated he thought SpaceX would go public soon. Musk replied, basically confirming it.

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Joel Kowsky, Public domain, via Wikimedia Commons

Elon Musk confirmed through a post on X that a SpaceX initial public offering (IPO) is on the way after hinting at it several times earlier this year.

It also comes one day after Bloomberg reported that SpaceX was aiming for a valuation of $1.5 trillion, adding that it wanted to raise $30 billion.

Musk has been transparent for most of the year that he wanted to try to figure out a way to get Tesla shareholders to invest in SpaceX, giving them access to the stock.

He has also recognized the issues of having a public stock, like litigation exposure, quarterly reporting pressures, and other inconveniences.

However, it appears Musk is ready for SpaceX to go public, as Ars Technica Senior Space Editor Eric Berger wrote an op-ed that indicated he thought SpaceX would go public soon.

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Musk replied, basically confirming it:

Berger believes the IPO would help support the need for $30 billion or more in capital needed to fund AI integration projects, such as space-based data centers and lunar satellite factories. Musk confirmed recently that SpaceX “will be doing” data centers in orbit.

AI appears to be a “key part” of SpaceX getting to Musk, Berger also wrote. When writing about whether or not Optimus is a viable project and product for the company, he says that none of that matters. Musk thinks it is, and that’s all that matters.

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It seems like Musk has certainly mulled something this big for a very long time, and the idea of taking SpaceX public is not just likely; it is necessary for the company to get to Mars.

The details of when SpaceX will finally hit that public status are not known. Many of the reports that came out over the past few days indicate it would happen in 2026, so sooner rather than later.

But there are a lot of things on Musk’s plate early next year, especially with Cybercab production, the potential launch of Unsupervised Full Self-Driving, and the Roadster unveiling, all planned for Q1.

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Tesla adds 15th automaker to Supercharger access in 2025

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Credit: Tesla

Tesla has added the 15th automaker to the growing list of companies whose EVs can utilize the Supercharger Network this year, as BMW is the latest company to gain access to the largest charging infrastructure in the world.

BMW became the 15th company in 2025 to gain Tesla Supercharger access, after the company confirmed to its EV owners that they could use any of the more than 25,000 Supercharging stalls in North America.

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Newer BMW all-electric cars, like the i4, i5, i7, and iX, are able to utilize Tesla’s V3 and V4 Superchargers. These are the exact model years, via the BMW Blog:

  • i4: 2022-2026 model years
  • i5: 2024-2025 model years
    • 2026 i5 (eDrive40 and xDrive40) after software update in Spring 2026
  • i7: 2023-2026 model years
  • iX: 2022-2025 model years
    • 2026 iX (all versions) after software update in Spring 2026

With the expansion of the companies that gained access in 2025 to the Tesla Supercharger Network, a vast majority of non-Tesla EVs are able to use the charging stalls to gain range in their cars.

So far in 2025, Tesla has enabled Supercharger access to:

  • Audi
  • BMW
  • Genesis
  • Honda
  • Hyundai
  • Jaguar Land Rover
  • Kia
  • Lucid
  • Mercedes-Benz
  • Nissan
  • Polestar
  • Subaru
  • Toyota
  • Volkswagen
  • Volvo

Drivers with BMW EVs who wish to charge at Tesla Superchargers must use an NACS-to-CCS1 adapter. In Q2 2026, BMW plans to release its official adapter, but there are third-party options available in the meantime.

They will also have to use the Tesla App to enable Supercharging access to determine rates and availability. It is a relatively seamless process.

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Tesla adds new feature that will be great for crowded parking situations

This is the most recent iteration of the app and was priming owners for the slowly-released Holiday Update.

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Credit: Grok

Tesla has added a new feature that will be great for crowded parking lots, congested parking garages, or other confusing times when you cannot seem to pinpoint where your car went.

Tesla has added a new Vehicle Locator feature to the Tesla App with App Update v4.51.5.

This is the most recent iteration of the app and was priming owners for the slowly-released Holiday Update.

While there are several new features, which we will reveal later in this article, perhaps one of the coolest is that of the Vehicle Locator, which will now point you in the direction of your car using a directional arrow on the home screen. This is similar to what Apple uses to find devices:

In real time, the arrow gives an accurate depiction of which direction you should walk in to find your car. This seems extremely helpful in large parking lots or unfamiliar shopping centers.

Getting to your car after a sporting event is an event all in itself; this feature will undoubtedly help with it:

Tesla’s previous app versions revealed the address at which you could locate your car, which was great if you parked on the street in a city setting. It was also possible to use the map within the app to locate your car.

However, this new feature gives a more definitive location for your car and helps with the navigation to it, instead of potentially walking randomly.

It also reveals the distance you are from your car, which is a big plus.

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Along with this new addition, Tesla added Photobooth features, Dog Mode Live Activity, Custom Wraps and Tints for Colorizer, and Dashcam Clip details.

All in all, this App update was pretty robust.

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