QuantumScape (QS) Q3 2023: prototype solid-state test cells exceed performance targets
Following the close of Q3 2023, solid-state battery developer QuantumScape has updated the public to its progress the last three months, which includes some encouraging results. In addition to catching a peep at mockups of its production-intent QSE-5 cell design, QuantumScape’s prototype has done better than expected with one automotive OEM in particular. Are solid-state EVs closer than we imagined? QuantumScape says maybe, but it still has some work to do.
If you don’t know the name QuantumScape ($QS) by now, you should probably start educating yourself (don’t worry, we have plenty of previous coverage for you to study). The advanced battery technology company has been working for over a decade to develop scalable, energy-dense solid-state battery cells that can one day achieve cost parity with traditional lithium-ion cells popular in current EV models.
While there are plenty of competitors out there chasing a future powered by safer and more efficient solid-state cells, QuantumScape hit its own major breakthrough in 2020 by utilizing a proprietary ceramic separator. This technology led to single-layer prototype cell testing, followed by 10-layer cells, then 16-layer prototypes.
By Q2 of 2022, QuantumScape’s solid-state had expanded to 24 layers, setting the stage for vigorous internal testing and the beginning of a three-step journey (A, B, and C prototype cells) before entering automotive qualification and (hopefully) commercialized production.
In December of 2022, QuantumScape began delivering the first 24-layer A0 prototype cells to automotive partners to test themselves, and by Q1 of 2023, testing had been completed by at least one unnamed EV OEM.
At that same time, QuantumScape shared that its first commercial solid-state product will be an ~5 Ah cell called QSE-5 (seen above), which also began shipping to OEM partners as of Q2 2023. Now, QuantumScape has posted its Q3 2023 report, and A0 prototype testing has delivered results that were better than expected.
QuantumScape rolls in Q3, shares FlexFrame format
As previously mentioned, QuantumScape’s first planned commercial product will be a solid-state cell called the QSE-5, based upon the aforementioned A0 prototype cells. QS states that the cell consists of a unique format it calls FlexFrame, which combines the conventional pouch and prismatic cell designs in order to address the “uniaxial expansion of lithium metal as it plates and strips during charging and discharging.”
The battery developer shared that a primary goal for 2023 is to improve the packaging of its QSE-5 cells compared to the A0 prototypes, as the former will contain higher-loading cathodes than the former, sustaining higher current densities built with tighter margins, putting more stress on the cell.
For comparison, QuantumScape says the QSE-5 cells are designed to deliver a capacity around 5 amp-hours (Ah), while 2170 battery designs currently used by some of the top EV automakers offer an average capacity of around 4.5–5 Ah. In this case, QuantumScape sits on the cusp of performance parity if not better, using smaller, lighter, and safer cells.
Switching back to the A0 prototypes that will enable the production of the QSE-5 cells someday, QuantumScape provided further room for optimism in its Q3 2023 report. The company states that although its commercial target for its solid-state cells remains at 80% energy retention through 800 charge cycles, one prospective automotive customer found much better results testing the A0 cells.
Those labs completed over 1,000 full cycle equivalents and achieved over 95% discharge energy retention using test conditions of C/3 charge and C/2 discharge with QuantumScape’s standard temperature and pressure conditions, and 100% depth of discharge. In the Q3 report, QuantumScape patted itself on the back for this encouraging result, but isn’t shopping for yachts any time soon – there is still plenty of room for improvement. Per the company:
We emphasize that this is the best-performing cell and we have work to do on aspects such as reliability. Nonetheless, this is an exceptional result. We are not aware of any automotive-format lithium-metal battery that has shown such high discharge energy retention over a comparable cycle count, at room temperature and modest pressure, regardless of C-rate. We believe that no competing electrolyte — solid or liquid — has demonstrated sufficient stability with lithium metal to achieve this, and that this result sets a new high-water mark for lithium-metal battery performance.
Looking ahead, QuantumScape states that its work beyond Q3 2023 will remain focused on QSE-5 development, which could find much success in several applications serving all vehicles from passenger EVs, to commercial trucks, motorcycles, and even consumer electronics. In regard to electronics, QuantumScape’s Q3 report states that the company’s single-layer solid-state cells have now achieved between 1,500 to 2,000 cycles with approximately 80% discharge energy retention with zero externally applied pressure. For comparison, QS states that 500 to 1,000 charge-discharge cycles represents the key life cycle threshold for most consumer electronics applications.
On the manufacturing side, QuantumScape has completed equipment installation for its “Raptor” fast separator heat treatment process (3x as fast as previous processes) and remains on track to deploy the process by year’s end. It also continues to make progress in implementing its “Cobra” process to support the QSE-5 B0 prototype production in the future.
Financials look good as well. The Q3 report detailed $1.1 billion in liquidity as QuantumScape raised $300 million in gross proceeds the past three months. The company’s current forecast offers enough runway to continue solid-state cell development into 2026. Per QuantumScape:
Our focus for 2023 is simple: turn the corner from prototype to product. Our key milestones are all aimed at advancing product development to build a sufficient level of technical and manufacturing maturity to enable initial production of QSE-5. With just a few months remaining in the year, we are maintaining aggressive near-term schedules and remain focused on bringing a potentially disruptive first product to market in the near future.
But strategically, our mission is bigger than a series of near-term objectives. We have been pursuing a next-generation electric vehicle battery for over a decade, and with a mission as challenging and as important as this, long-term thinking is indispensable. Moreover, the market opportunity for our technology platform is massive, potentially in the hundreds of billions of dollars annually for decades to come.
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On today’s exciting episode of Quick Charge, we don’t even mention “you know who,” focusing instead on EV news from Rivian, Lucid, Nissan, Ford, and what it takes to make a MAN in the heavy truck space. Check it out!
Sure, Nissan is pushing back production estimates on its yet-to-begin-production Nissan LEAF and Ford’s EV sales were down significantly in Q2, but there’s more to the story than the “Faux News” crowd would have you believe. Plus: some new electric success stories from Porsche and a disappointing (but still cool) dive into some new home backup battery tech.
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he 30% federal solar tax credit is ending this year. If you’ve ever considered going solar, now’s the time to act. To make sure you find a trusted, reliable solar installer near you that offers competitive pricing, check out EnergySage, a free service that makes it easy for you to go solar. It has hundreds of pre-vetted solar installers competing for your business, ensuring you get high-quality solutions and save 20-30% compared to going it alone. Plus, it’s free to use, and you won’t get sales calls until you select an installer and share your phone number with them.
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Battery electric cars sold today in Europe produce 73% less life-cycle greenhouse gas emissions than gas cars, even when factoring in production, according to new research from the International Council on Clean Transportation (ICCT). That’s a big improvement from 2021, when the gap was 59%.
Meanwhile, hybrids and plug-in hybrids haven’t made much progress. The study confirms what clean transportation advocates have been saying for years: If Europe wants to seriously slash emissions from its dirtiest mode of transport – ICE passenger cars, which pump out nearly 75% of the sector’s pollution – it needs to go all-in on battery EVs.
“Battery electric cars in Europe are getting cleaner faster than we expected and outperform all other technologies, including hybrids and plug-in hybrids,” said ICCT researcher Dr. Marta Negri. Credit the continent’s rapid shift to renewables and the higher energy efficiency of EVs.
The makeup of the EU’s power grid is changing fast. By 2025, renewables are expected to generate 56% of Europe’s electricity, up from 38% in 2020. And that’s just the beginning: the share could hit 86% by 2045. Since cars bought today could still be on the road two decades from now, the growing use of clean electricity will only boost EVs’ climate benefits over time.
Gas-powered cars, on the other hand, will stay mostly tied to fossil fuels as the cost and availability of biofuels and e-fuels are still uncertain.
Hybrids and plug-in hybrids only cut lifetime emissions by 20% and 30%, respectively, compared to gas cars. That’s partly because plug-in hybrids tend to run on gas more than expected. So while hybrids aren’t useless, they’re just not good enough if we’re serious about climate goals.
Countering EV myths with hard data
There’s been a lot of noise lately about whether EVs are really that green. The ICCT study takes aim at the bad data and misleading claims floating around, like ignoring how the grid gets cleaner over time or using unrealistic gas mileage figures.
It’s true that manufacturing EVs creates more emissions upfront – about 40% more than making a gas car, mostly due to the battery. But EVs make up for it quickly: that extra emissions load is usually wiped out after about 17,000 km (10,563 miles) of driving, which most drivers hit in a year or two.
“We’ve recently seen auto industry leaders misrepresenting the emissions math on hybrids,” said Dr. Georg Bieker, senior researcher at the ICCT. “But life-cycle analysis is not a choose-your-own-adventure exercise.”
ICCT’s new analysis includes emissions from vehicle and battery production and recycling, fuel and electricity production, and fuel consumption and maintenance. It even adjusts for how the electricity mix will change in the coming years – a key detail when measuring plug-in hybrid performance.
Read more: Volkswagen’s 47% BEV sales jump includes a 24% boost in the US
The 30% federal solar tax credit is ending this year. If you’ve ever considered going solar, now’s the time to act. To make sure you find a trusted, reliable solar installer near you that offers competitive pricing, check out EnergySage, a free service that makes it easy for you to go solar. It has hundreds of pre-vetted solar installers competing for your business, ensuring you get high-quality solutions and save 20-30% compared to going it alone. Plus, it’s free to use, and you won’t get sales calls until you select an installer and share your phone number with them.
Your personalized solar quotes are easy to compare online and you’ll get access to unbiased Energy Advisors to help you every step of the way. Get started here.
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![Here's our closest look at the Kia EV2 caught testing in the Alps [Video]](https://i0.wp.com/electrek.co/wp-content/uploads/sites/3/2025/07/Kia-EV2-closest-look.jpeg?resize=1200,628&quality=82&strip=all&ssl=1)
The EV2 may be Kia’s smallest electric vehicle, but it has a big presence on the road. Kia promises it won’t feel so small when you’re inside, thanks to clever storage and flexible seating. After a prototype was spotted testing in the Alps, we are getting our closest look at the Kia EV2 so far.
Kia EV2 spotted in the Alps offers our closest look yet
Kia first unveiled the Concept EV2 during its 2025 EV Day event (see our recap of the event) in April, a preview of its upcoming entry-level electric SUV.
Despite its small size, Kia claims it will “redefine urban electric mobility” with new innovative features and more. Kia has yet to say exactly how big it will be, but given it will sit below the EV3, it’s expected to be around 4,000 mm (157″) in length. The EV3 is 4,300 mm (169.3″) in length.
Looking at it from the side, it sits much higher than you’d expect, similar to Kia’s larger EV9. During an exclusive event at Milan Design Week in April, Kia gave a sneak peek of the interior.
Kia said the interior is inspired by a “picnic in the city,” or in other words, a retreat from the busy city life. With a flat-floor design and flexible seating, you can quite literally have a picnic in the city.
Although we’ve seen the EV2 out in public testing a few times, a new video provides the closest look at Kia’s upcoming electric SUV.
The video, courtesy of CarSpyMedia, shows an EV2 prototype testing in the Alps with European license plates. There’s also a “Testfahrt” sticker on the back, which translates to “Test Car” in German.
As the prototype drives by, you can get a good look at it from all angles. Like in past sightings, the front features stacked vertical headlights with Kia’s signature Star Map lighting. Even the rear lights appear to be identical to those of the concept.
The interior will feature Kia’s next-gen ccNC (connected car Navigation Cockpit) infotainment system. The setup includes dual 12.3″ instrument clusters and infotainment screens in a curved panoramic display. Depending on the model, it could also include an added 5.3″ climate control screen.
Last month, a crossover coupe-like model was spotted on a car carrier in Korea, hinting at a new variant. The new model featured a design similar to that of the Genesis GV60.
Kia’s CEO, Ho Sung Song, also recently told Autocar that a smaller, more affordable EV was in the works to sit below the EV2. Song said the new EV, priced under €25,000 ($30,000), was “one area we are studying and developing.”
With the EV4 and EV5 launching this year, followed by the EV2 in 2026, it could be closer toward the end of the decade before we see it hit the market. Next-gen EV6 and EV9 models are also due out around then.
The Kia EV2 is set to launch in Europe and other global regions in 2026. Unfortunately, it’s not expected to make the trip to the US.
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