We need to talk about Rad Power Bikes’ new e-bike batteries
Electric bikes just may be the biggest transportation revolution of our generation, helping millions replace car usage with more affordable, more efficient alternatives. But there’s no denying that concerns have been swirling about the safety of e-bike batteries, even if such fire fears have primarily been overblown by much of the media.
Leading electric bicycle maker Rad Power Bikes has just unveiled its new “Safe Shield Battery” in an effort to mitigate worries over e-bike battery safety. And it’s something we need to talk about.
The whole underlying issue here is based on the fact that e-bike batteries are usually comprised of dozens of smaller, energy-dense lithium-ion battery cells. Those cells are similar – and sometimes identical – to the battery cells used in everything from electric cars to power tool battery packs.
The individual battery cells store lots of energy and are generally quite safe. However, danger can occur when the cells are punctured or short-circuited, with the latter often happening when water makes its way into battery packs over time. Well-made e-bike batteries use several methods to mitigate these risks, and the result is that battery fires are exceedingly rare. Even in e-bikes, which seem to unfairly receive the brunt of lithium-ion battery fire scaremongering, such fires occur in a tiny, tiny fraction of a percent of e-bikes.
To put things into perspective, New York City often gets labeled as the epicenter of e-bike fires, yet New Yorkers are somewhere around 5x more likely to die on the subway than from an e-bike fire.
However rare though, e-bike fires can and do occur in poorly made batteries or in battery packs that have been abused, damaged, or otherwise misused. And that’s exactly what it looks like Rad Power Bikes set out to solve with its new Safe Shield e-bike batteries.
The secret sauce in Rad’s batteries isn’t actually the battery cells themselves. Those are fairly standard cells like you’ll find in many other e-bike batteries. The major difference is how the battery packs are constructed.
They use a method known as potting, which basically encapsulates electronics in a waterproof resin barrier. It’s common in electronics that will live much of their lives outdoors, as it seals the sensitive components from moisture.
Remember that mosquito from Jurassic Park that was encased in tree resin amber? That’s kind of the idea with potted batteries, just with a urethane resin instead of tree sap. The battery pack already uses quality construction methods, but then to top it off, the entire thing is filled with resin that makes it impermeable to water – or intruding fingers, tools, or anything else. It’s forever sealed away from the world (though Rad says it’s still recyclable in their battery recycling program).
But it’s not just any resin, the idea is that it is also thermally insulating, which means that if one battery cell ever did go rouge and start overheating (an incredibly, incredibly rare event in well-made battery cells), the barrier would help protect any nearby cells from joining in and developing what is known as a “thermal runaway” condition that is what ultimately leads to the spread of most battery fires.
We spoke to one of the country’s leading battery experts Luke Workman on our Wheel-E podcast last year, who has often performed forensic evaluations in the aftermath of battery fires. When we asked him if there was anything that could be done to help mitigate the fire risks we were seeing in the e-bike industry, such as the widespread adoption of UL certification, he had a simple answer: “Potting.”
Workman explained that he’s performed post-fire forensic analysis on plenty of UL-certified battery packs, indicating that such certification isn’t a guarantee of safety. “You can pass UL water ingress tests with a bit of strategically placed tape over the battery seams,” he explained at the time. But potting was the truly safest method of building batteries that wasn’t intended to merely pass a certification test, but rather to actually ensure the battery cells were isolated and protected.
At the time, there was just one major company producing potted e-bike batteries, Luna Cycle, but it hasn’t gained significant traction anywhere else in the e-bike industry.
At least not until now.
With Rad Power Bikes adopting potted battery design practices, the entire industry has been put on notice. Until new technologies like fireproof solid-state batteries become commonplace, potted batteries are the single best defense against battery fires. And with one of the largest e-bike retailers in the country hopping aboard the potted train, others are all but sure to follow.
Rad has a history of setting examples that are quickly copied throughout the US e-bike industry. New e-bike models like the RadRunner spurred several copycats and jumpstarted the utility e-bike market. Rad’s expansions into several large brick-and-mortar stores pre-empted a major push by several other US e-bike companies to expand dealer networks with independent bike shops. Rad’s electric trike was quickly followed by several other competitors seeking to undercut its price.
In none of these examples was Rad the first e-bike company to make a major move, but it was the first big e-bike company to do so, and thus helped shift the industry each time. And while there’s no guarantee how the industry will react, especially in a year where e-bike sales have lagged behind the post-pandemic boom, there’s no doubt that a major e-bike maker finally adopting potted battery technology is a sign of where the industry is headed. How long it takes us to get there though, that’s anyone’s guess.
resin pouring image via: Pexels
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That viral Tik Tok video showing a “self driving” Ford Mustang Mach-E scraping its way down the highway with a helpless passenger behind the steering wheel praying for his life? California Highway Patrol says the car wasn’t driving itself during the viral highway crash and arrested the driver on suspicion of driving under the influence.
If you have’t seen the video, posted by TikToker Marty Byrde, it shows a self-driving Ford Mustang Mach-E driving down the road, grinding itself against the highway’s concrete Jersey barriers, with the driver behind the wheel, seemingly helpless and afraid and trapped inside an out-of-control vehicle, apparently praying for his life.
There, in a single video, was everyone’s worst fear in an age of electric steering, brake-by-wire, and self-driving cars: a car that loses its mind, killing you and everyone you love and probably a busload of orphans for good measure. (!)
But, thankfully, that doesn’t seem to be what actually happened. At least, not according to the California Highway Patrol (CHP) in Redwood City.
In case it vanishes, the CHP press release does a good job of explaining the situation as it stands, while emphasizing that any short-form video content is going to lack potentially needed context before the public begins to panic about a Maximum Overdrive sort of scenario.
The preliminary investigation indicates the driver of a green Ford Mustang Mach E, crashed into a red Mitsubishi Mirage then collided with the right shoulder wall near the Holly Street overcrossing. Through our investigation, we determined the vehicle was not operating in autonomous mode and CHP officers arrested the driver on suspicion of driving under the influence, resulting in injuries to another.
While we understand public interest in such incidents, video clips may not capture the complete context or investigative process. The CHP conducts each investigation thoroughly, professionally, and in accordance with the law. We thank the community for its concern and remind motorist to report dangerous driving by calling 9-1-1.
The video was especially surprising given Ford’s BlueCruise excellent track record. The system is good enough, in fact, to have been named the top active driver assistance system (ADAS) by Consumer Reports, surpassing rivals such as GM’s Super Cruise and Tesla’s Autopilot in a comparison test of similar OEM ADAS systems.
The original Tik Toker who recorded the now viral video (I hate that phrase, too, but millions of people have seen it by now) reported that no one seemed hurt in the ensuing accident. Coupled with CHP’s confirmation that the Mach-E wasn’t driving itself during the accident, I’d say that walking out of a hands-free, highway speed crash is as good an endorsement as any … but in case you need another one, this one went 250,000 miles and still had 92% of its battery life left.
Ford is currently offering 0% interest financing for up to 72 months for well-qualified buyers, as well as $1,000 in retail bonus cash in some markets.
SOURCE | IMAGES: CHP, featured image from marty.byrde3.
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The Trump Administration’s “Big Beautiful Bill” (BBB) is doing a lot of damage to America’s health, economy, and global standing – but one thing it certainly has not done is make it “too late” for US homeowners to benefit from a rooftop solar system.
Companies like Tesla and Rivian are reeling from the double-whammy of Trump’s BBB ending the $7,500 Federal EV tax credit early and killing the market for carbon tax credits, which provides EV car brands with hundreds of millions of dollars, almost overnight. Still another part of the bill that’s getting a lot of publicity is the death of the 30% tax credit for home solar systems at the end of 2025, which has led many Americans who have been “on the fence” about adding a solar or solar + storage solution to their home to believe they waited too long to go solar.
The good news? It’s not too late. Homeowners who get solar installed and operational by December 31st can still claim a full 30% federal tax credit for 2025, and any unused portion of that credit rolls over to the next tax year.
The better news? Even without the solar tax credit, adding a home solar system with battery backup storage can still deliver a positive ROI.
Solar benefits go beyond tax credits
The most obvious benefit of home solar plus battery storage is that you can produce your own energy (or, if you’ve been following along for a while, electric fuel) for less than it would cost you to buy that energy from your local utility. That’s been true for a while, but it’s about to become even more true.
Outlets like The Washington Post and The Guardian are predicting that household energy bills in Republican-leaning states could rise by more than $600 next year, based on their analyses of the BBB. One study, by energy and climate think tank Energy Innovation, showed energy prices rising by much as 18% by 2035 as a result of Trump’s policies.
Energy Innovation’s analysis skews left, and tends to focus on “left of zero” outcomes. Still, when the corporatist rags start quoting bad numbers and bear markets, you should probably pay attention. Some of the key takeaways of the EI study include:
- Power generation capacity will fall 340 gigawatts by 2035, raising costs to meet growing demand and damaging industrial competitiveness
- Wholesale electricity prices will increase 25 percent by 2030 and 74 percent by 2035; electricity rates paid by consumers will increase between 9-18 percent by 2035
- Household energy costs will increase $170 annually by 2035
- America loses $980 billion in cumulative GDP through the budget reconciliation window
- Florida, Texas, Kentucky, and both North and South Carolina stand to be hit the hardest by rising energy costs over the next ten years
Beyond insulating your household budget from rising energy costs, a home solar system can help to insulate your home, too – which means you’ll need less of that lower cost electricity you’re generating to keep it cool in the summer and warm in the winter.
That’s not just me saying that. A study by the Jacobs School of Engineering at UC San Diego study found that during the day, ceilings under tilted solar panels were about 5°F cooler than exposed ceilings, thanks to the panels acting as a shade and creating an air gap that helps dissipate heat. In cool weather, the panels helped homes retain heat, leading to a dual benefit across multiple seasons.
“There are more efficient ways to passively cool buildings, such as reflective roof membranes,” explains Jan Kleissl, a professor of environmental engineering at UC San Diego. “But, if you are considering installing solar photovoltaic, depending on your roof thermal properties, you can expect a large reduction in the amount of energy you use to cool your residence or business.”
Keeping your own personal costs at bay while putting clean, excess energy that’s not stored in your home batteries back into the grid is a win-win that not only reduces your own energy bills but also puts downward pressure on wholesale electricity prices.
What’s more, because the rising costs of energy prices are outpacing interest rates, it might even make sense to finance a solar package – but definitely don’t take my word for that. Talk to a certified financial planner or someone with a fiduciary interest in your money to work the numbers before you start signing stuff.
Original content from Electrek.
READ MORE: It’s time to start recommending some Tesla Powerwall alternatives.
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![Not enough: Corvette concept falls 1,000 hp short of Chinese hypercar hype [video]](https://i0.wp.com/electrek.co/wp-content/uploads/sites/3/2025/08/not-enough.jpg?resize=1200,628&quality=82&strip=all&ssl=1)
The Corvette CX making its debut at this weekend’s The Quail, a Motorsports Gathering, generates more than 2,000 combined hp from its four, individually controlled and torque-vectoring electric motors. It’s staggering power, draped in beautiful bodywork, at a point in time when Corvette is rapidly climbing through the supercar ranks. There’s only one problem with this latest rendition of America’s motorsports icon: China’s has 1,000 more hp.
The specs for the Yangwang U9 Track Edition that leaked last week in BYD filings with the Ministry of Industry and Information Technology (MIIT) read like something out a middle schooler’s journal. 3,000 hp. 0-60 in one second. An electric motor for each wheel. A top speed approaching 300 mph. If it’s real (and there is absolutely zero reason to believe that it isn’t), the BYD will be the performance car benchmark against which all others are measured, like the Ferrari F40 of the 1980s, McLaren F1 of the 1990s, or Bugattis of the twenty-first century.
And that 3,000 hp BYD? That’s a production car, if limited. Meanwhile, the latest no production intent, pie-in-the-sky, no-holds-barred, you can just say shit and no one will ever question it electric hypercar concept from GM falls more than 1,000 hp short, at “just” 2,000 hp.
But don’t count the Corvette out.
More grease, bigger hammer
Whatever you may think of poster-era supercars like the Lamborghini Diablo, Porsche Carerra GT, or Pagani Huayra – or even modern electric hypercars like the Tesla Model S Plaid and Xiaomi SU7 – the one thing they all have in common is that they are all objectively slower than the 255 mph Callaway Corvette Sledgehammer from 1988, above.
I won’t go into the specs of that car (this isn’t that kind of car blog), but the point is that while the Corvette is often overlooked, there is a reason GM’s top-shelf sporty car carries that “King of the Hill” nickname – and the new Corvette CX concept is similarly, undoubtedly, more than just a list of specs in a magazine.
And those specs are seriously impressive. The new Corvette CX concept packs four independent electric motors putting out a combined 2,000 hp and some ungoldy amount of Earth-moving torque under advanced software controls that enable four-wheel torque vectoring for maximum grip and cornering performance, as well as precise steering control under even the heaviest of braking.
Power to those motors comes from the Corvette CX’ 90 kWh lithium-ion battery that’s centrally mounted low in the chassis, giving the car a low center of gravity and, crucially, ideal 50/50 front-rear weight distribution.
Plus: it’s gorgeous
The Corvette team says the CX concept draws from more more than seventy (!) years of Corvette heritage while being a forward looking concept, not a retro piece. Stylistically, the concept seems more visually mature and subdued than its in-production C8 cousin, and seems to promise a return to the C3-5 eras’ cleaner, less busy aesthetics.
Phil Zak, executive design director for Chevrolet, is very rightly proud of the CX’ design. “While the shape of a Corvette has always been expressive and forward-looking, each crease and line has its roots in the generations that came before it. It is aspirational, it is cultural, it is the reason people want to come and work at Chevrolet,” says, Zak. “The CX … demonstrate(s) our design teams stepping away from the constraints of production vehicles and unleashing their creativity. Through this exercise, we’ve added to Corvette and defined the design direction for Corvette moving forward.”
The rest of the official GM press release copy highlights the aviation-inspired canopy, jet-age interior, and an underbody fan system not entirely unlike the system leaked in Tesla patent filings earlier this week. You can see that here:
Aggressively futuristic, yet unquestionably a Corvette, the CX concept shows what an uncompromised future sports car can be. The athletic exterior design, highlighted by the fighter-jet-inspired cockpit canopy, isn’t just about looking powerful – it was shaped in collaboration with the GM Motorsports Aero Group. Every angle was designed with ultimate performance in mind.
On the inside, every aspect of the CX concept was designed to provide an unmatched driving experience. The forward-opening fighter-jet-style canopy automatically raises as you approach. Driver and passenger settle into seating finished in Inferno Red ballistic textile, bolstered to help hold occupants in place during high-g cornering maneuvers. Premium silicone leather, milled aluminum, and low-gloss forged carbon fiber accents give an elevated feel to the driver-focused cabin.
The digital windscreen transforms the windshield into an immersive surround display with real-time performance data. Every major control is elegantly integrated into the steering wheel, keeping the driver’s focus on the road ahead.
The innovations continue underneath the skin with the Vacuum Fan System. Built-in fans draw air through the open-channel bodywork, generating massive downforce and adjusting the airflow over the rear diffuser to refine aerodynamic balance in real-time. The front diffuser and rear wing are both active, adjusting automatically in response to the driver’s inputs to generate maximum grip. The integrated understructure of the CX concept is visible through the aero channels in the bodywork, and the suspension A-arms are wing-shaped to enhance airflow and reduce front-end lift.
All in all, the new Corvette CX concept is an impressive piece of engineering and rolling art. It’s also a statement from GM that, while the Corvette may very well be going all-electric in its next iteration, it won’t be going any slower. In fact, the first electric Corvette might even be the best one ever – but don’t say that one too loud (you’ll upset the New Balance crowd).
That said, as a pure concept that almost no one will ever drive and which might never get publicly strapped on to a dyno, it is absolutely baffling that Chevy wouldn’t have just claimed 3,000 hp. Even if it was just to match BYD’s claims and continue to build on a century of hype for American exceptionalism, you know?
That’s my take, anyway – what’s yours? Watch the Corvette CX Concept hype video from Chevrolet, below, then let us know what you think of the latest GM concept in the comments.
Electric Corvette CX concept
If you’re considering going solar, it’s always a good idea to get quotes from a few installers. 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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