EV batteries may last up to 40% longer than expected – Stanford
Real-world driving and charging habits may make EV batteries last longer than researchers previously thought, finds a new Stanford-SLAC study.
A new study from the SLAC-Stanford Battery Center published on December 9 in Nature Energy suggests that real-world driving habits – like stop-and-go traffic, highway driving, quick city trips, and lots of time spent parked – could make EV batteries last about a third longer than previously thought. This means the average EV owner might not need to replace their battery pack or upgrade to a new car for several extra years, saving money and extending the life of their ride.
Battery scientists usually test new designs in labs by cycling them at a constant rate of discharge and recharge, speeding up the process to quickly see how long they’ll last and how well they perform. However, according to a new study published on December 9 in Nature Energy, that method doesn’t reflect how EV batteries are used in the real world.
For everyday EV commuters, this is big news. While battery prices have dropped by about 90% in the last 15 years, they still make up nearly a third of the cost of a new EV. The study suggests that current and future EV drivers could enjoy more miles before needing a replacement.
“We’ve not been testing EV batteries the right way,” said Simona Onori, senior author and an associate professor of energy science and engineering at the Stanford Doerr School of Sustainability. “To our surprise, real driving with frequent acceleration, braking that charges the batteries a bit, stopping to pop into a store, and letting the batteries rest for hours at a time helps batteries last longer than we had thought based on industry-standard lab tests.”
The researchers created four different EV discharge profiles, ranging from the usual constant discharge to more dynamic ones based on real-world driving data. Over two years, they tested 92 commercial lithium-ion batteries using these profiles. The results were clear: The closer the profiles matched actual driving behavior, the longer the batteries lasted.
So, what’s behind this surprising longevity? A machine learning algorithm trained on the mountain of collected data helped uncover how dynamic discharge patterns reduce battery degradation. Turns out, the way people actually drive might be easier on batteries than scientists expected.
For example, short, sharp accelerations in EVs actually slow down battery degradation. That flips the script on what researchers – including this study’s own team – had assumed for years: that acceleration spikes were a battery’s worst enemy.
Alexis Geslin, one of three lead authors of the study and a PhD student in materials science and engineering and in computer science in Stanford’s School of Engineering, explained:
We battery engineers have assumed that cycle aging is much more important than time-induced aging. That’s mostly true for commercial EVs like buses and delivery vans that are almost always either in use or being recharged.
For consumers using their EVs to get to work, pick up their kids, go to the grocery store, but mostly not using them or even charging them, time becomes the predominant cause of aging over cycling.
The study pinpointed a sweet spot for discharge rates that balances time aging and cycle aging – at least for the commercial battery they tested. That range aligns with how most people actually drive their EVs. Automakers could use this insight to tweak battery management software, helping to extend battery life and optimize performance for real-world driving.
Going forward, energy science and engineering postdoctoral scholar Le Xu notes, “Researchers can now revisit presumed aging mechanisms at the chemistry, materials, and cell levels to deepen their understanding. This will facilitate the development of advanced control algorithms that optimize the use of existing commercial battery architectures.”
Read more: Researchers develop EV battery that charges 0-80% in 15 minutes
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Aviation startup ZeroAvia says it’s been granted a “raft” of 45 new patents key to the development of practical large hydrogen aviation engines – and the company says it has 200 more H-related patents in the pipeline!
The news comes just weeks after ZeroAvia and Scottish regional airline Loganair announced a new, hydrogen-electric “turboprop” replacement motor capable of up to 5MW of shaft horsepower (~6,700 hp). United States Patent and Trademark Office (USPTO) no. 12,341,225 covers an integrated hydrogen-electric engine design land is key to the development of a modular multi-MW hydrogen-electric engine for the ATR 42 and 72 model aircraft — which Loganair owns more than twenty of.
ATR isn’t the only potential customer ZerAvia is eyeballing, either. Despite hydrogen losing ground on utility-scale projects and more companies realizing that it’s “impossible” for hydrogen to compete as a transportation fuel, the fuel still seems to have some practical application in the aviation space. Both Airbus and Boeing have advanced plans and IP for hydrogen-ready airframes in recent weeks, as well, making the IP for large hydrogen-powered aviation engines that much more valuable.
“Recent patents filed and granted around hydrogen aviation give a window into an accelerating field of innovation,” explains Val Miftakhov, Founder and CEO, ZeroAvia. “As we see the large airframe manufacturers beginning to compete on technologies for hydrogen aircraft, there is a big opportunity for companies pioneering hydrogen propulsion systems. These are the inventions that will deliver truly clean, more affordable and highly efficient commercial air travel.”
What it’s all about
Like many tech-based startups, securing IP has been an integral part of ZeroAvia’s strategy, with the value of its patents being, essentially, the value of the company. Just as – if not more important to airlines like Loganair, American, and EcoJet, however, are the potential cost-savings of hydrogen compared to conventional aviation fuels like kerosene.
Importantly, these novel engines promise cost reductions for airlines. The substantially lower maintenance needs of hydrogen-electric engines will mean a decrease in maintenance and downtime for an airline’s fleet, with hydrogen fuel also projected to be significantly more cost effective than kerosene over time.
ZEROAVIA
You can read more about the new ZA600 and ZA2000 hydrogen-electric av motors here, and let us know what you think of hydrogen’s chances against traditional, kerosense-based aviation fuels in the comments.
SOURCE | IMAGES: ZeroAvia.
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You might want to hold onto your handlebars for this one – literally. The fashion-forward British electric scooter maker Bo just unveiled what could be the most extreme electric scooter the world has ever seen. Named The Turbo, this standing e-scooter isn’t just playing around with speed – it’s aiming to smash right through it and find out what’s waiting on the other side.
And it all begs the question, “How much is too much?”
When we talk about fast electric scooters, we’re usually in the neighborhood of 50 mph (80 km/h). But the Bo Turbo doubles those numbers.
With 100 mph+ (160+ km/h) top speeds and claimed acceleration that’s faster than a Tesla, this scooter seems to use a design philosophy pulled straight from the playbook of Formula One. Thus, it should come as no surprise that the team behind The Turbo includes engineers with experience from Williams F1 and the Bloodhound Land Speed Record rocket car.
The world’s fastest e-scooter?
Built on the same base chassis as the company’s sleek road-going Bo Model-M, The Turbo takes everything up a notch – actually, several notches. It features a 24,000 W dual-motor powertrain, 1,800 Wh battery, advanced traction control, and a power-to-weight ratio that reportedly beats a Bugatti Veyron.
At full power, the system is capable of propelling riders down a straightaway at three-digit speeds while standing upright. It’s absurd. It’s glorious. It’s gratuitous. It’s a dream. Or it’s a nightmare.
Bo says the machine is already delivering 85+ mph (137+ km/h) in early track testing at Goodwood Motor Circuit and is currently in development to push beyond the 100 mph barrier under Guinness World Record supervision.
And just in case you’re wondering if this is some experimental prototype cooked up in a lab – it’s not. The company is planning a limited run of built-to-order Turbo scooters, starting at a whopping $29,500. The first one is scheduled for delivery to a collector in Madrid during the 2026 Formula One race weekend.
From F1 brake ducts to street scooter DNA
Despite the headline-grabbing speed numbers, there’s a ton of serious engineering going on here. The Turbo uses ram-air intakes based on F1 brake cooling designs to keep the motors and controllers from overheating. The chassis – made from aerospace-grade aluminum and CNC-machined billet parts – is based on Bo’s proven Monocurve platform, the same structure that underpins the Bo Model-M. In fact, that might be the most impressive part of all, that the same chassis used underneath their everyday-ride-it-to-work Bo Model-M scooter is also holding together this 100 mph beast.
Bo’s team insists that despite the monster specs, The Turbo remains “surprisingly rideable.” Professional BMX rider Tre Whyte has piloted over 20 high-speed test runs, with the team now preparing to push the envelope even further.
A wild PR stunt – or something more?
It’s tempting to see The Turbo as just a headline machine (and hey, it works), but Bo says this project is about more than just chasing speed records. According to Bo CEO Oscar Morgan, “The Turbo is part of our mission to elevate these futuristic electric vehicles into the top tier of automotive performance.”
And honestly, they’ve got a point. E-scooters have exploded in popularity as low-speed urban vehicles, but the category rarely gets taken seriously in the performance world, despite the advent of racing leagues. Bo wants to change that – and they’re using motorsport technology to do it.
Electrek’s Take
Is this a practical daily rider? Absolutely not. But that’s not the point.
Bo is doing what so few e-scooter companies are willing to do – pushing boundaries, proving performance, and trying to make scooters feel exciting, not just functional. Whether The Turbo hits 100 mph or not, it’s already helped raise the bar for what electric micromobility can be. And if that means they develop safer and stable ways to build scooters along the way, then all the better.
The fact that they actually plan to sell these is a bit worrying, though the $30k pricetag means the local teens on your street aren’t going to be terrorizing the sidewalks with them. Well, not unless you’ve got an oil sheikh and his teenagers living on your street.
But hey, if you’ve got thirty grand and a need for painful death levels of speed – maybe this is your next toy.
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Environment
Chevron defeats Exxon in dispute over Guyana oil assets, clearing path for Hess acquisition
Chevron has prevailed against Exxon Mobil in a dispute over Hess Corporation’s offshore oil assets in the South American nation of Guyana, Exxon CEO Darren Woods told CNBC’s Becky Quick on Friday.
The ruling by the International Chamber of Commerce in favor of Chevron clears the way for the oil major to complete its $53 billion acquisition of Hess Corporation.
Chevron shares jumped about 3% in premarket trading.
“We disagree with the ICC panel’s interpretation but respect the arbitration and dispute resolution process,” Exxon said in a statement Friday.
The dispute had created significant uncertainty over whether Chevron’s acquisition of Hess would close, weighing on the oil major’s stock performance. The transaction would have failed if Exxon had prevailed.
Exxon and China National Offshore Oil Corporation had filed an arbitration case with the ICC, claiming a right of first refusal over Hess’s assets in the Stabroek Block, an oil development off the coast of Guyana.
Hess has a 30% stake in an oil patch, while Exxon leads the project with a 45% stake and CNOOC maintains 25% stake.
“We welcome Chevron to the venture and look forward to continued industry-leading performance and value creation in Guyana for all parties involved,” Exxon said.
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