Tag Archives: Battery

News

CATL Claims Its New EV Battery Is Good for a Million Miles

Leave a comment

For years, the dirtiest secret in electric cars hasn’t been range anxiety—it’s resale anxiety. New EVs roll off the lot with eight-year battery warranties and optimistic promises, but the second or third owner? They’re left staring at a five-figure battery replacement like a ticking time bomb. Fast charging, meanwhile, has been treated like a guilty pleasure: great when you’re in a hurry, bad for long-term battery health.

Now CATL, the world’s largest battery supplier, says it’s ready to blow up that narrative.

The Chinese battery giant claims its latest 5C lithium-ion pack can retain 80 percent of its original capacity after 3,000 full fast-charge cycles—under ideal 20°C (68°F) conditions. Do the math, and that works out to about 1.1 million miles of driving. That’s not a commuter car. That’s a New York taxi that refuses to die.

Even when the heat gets brutal, the numbers are still eyebrow-raising. At 60°C (140°F)—which CATL likens to a Dubai summer—the same pack is supposedly good for 1,400 cycles before dropping to 80 percent. That’s roughly 520,000 miles. Plenty of gasoline cars don’t survive that long even with engine rebuilds.

The “5C” label refers to how fast the battery can be charged relative to its capacity. In plain English: this pack could theoretically go from empty to full in about 12 minutes. That kind of charging speed usually murders batteries, but CATL insists it has figured out how to cheat physics—at least a little.

According to the company, the trick lies in smarter chemistry and aggressive thermal control. A more uniform cathode coating reduces microscopic structural damage. A special electrolyte additive helps heal tiny internal cracks before they become real problems. A temperature-responsive layer inside the separator slows ion flow when things start getting too hot. And the battery-management system can target cooling to specific hot spots inside the pack instead of treating it like one big, evenly warm brick.

The goal is simple: make fast charging routine, not something owners nervously avoid to protect their investment. If CATL is even half right, this could be huge for taxis, ride-hailing fleets, and delivery vans—anyone for whom a charging stop is lost revenue.

Of course, these are still lab numbers. CATL hasn’t said when these packs will hit mass production or which vehicles will get them first. And anyone who has followed EV tech long enough knows that the real world is far less polite than a temperature-controlled test cell.

Still, the implication is enormous. If a battery can really go half a million—or even a million—miles without collapsing, the most expensive component in an EV stops being a liability and starts becoming an asset. That means used EVs suddenly look a lot less risky, and a lot more like the bargain hunters have been waiting for.

And that might be the biggest revolution here—not faster charging, not longer range, but the simple idea that your electric car’s battery might actually outlive the car wrapped around it.

Source: CATL

News

Volkswagen Begins European Production of Unified EV Battery Cells in Salzgitter

Volkswagen Group’s push to control more of its electric future has taken a tangible step forward. PowerCo, the battery company created within the Group, has officially put its Salzgitter gigafactory into operation, producing the first unified battery cells proudly labeled “Made in Europe.” For an industry still heavily dependent on Asian supply chains, this is more than a symbolic milestone—it’s a strategic statement.

PowerCo’s approach is clear and ambitious: design, develop, and manufacture battery cells entirely in Europe. By doing so, Volkswagen aims to strengthen technological sovereignty while reducing exposure to geopolitical and supply-chain risks that have become painfully visible over the last few years. The first cells rolling out of Salzgitter are now headed to Volkswagen Group brands for final road testing, with their market debut scheduled for next year in electric models from Volkswagen, Škoda, and Seat/Cupra.

At the heart of this strategy is standardization. PowerCo’s “unified cell” concept is designed to work across multiple brands, platforms, and global regions. Within the Group, PowerCo is expected to cover around 50 percent of demand for these standardized cells, with the remainder sourced from external suppliers. The payoff is scale: a single cell architecture that can be produced in large volumes, adapted to different chemistries, and deployed worldwide.

That flexibility is one of the unified cell’s strongest cards. The architecture supports multiple battery chemistries, ranging from cost-focused lithium iron phosphate (LFP) to higher-performance nickel manganese cobalt (NMC), and eventually solid-state technology. This allows Volkswagen to tailor batteries to different vehicle segments and markets without reinventing the wheel each time.

The first production-ready unified cell is based on NMC chemistry and targets the mass market—without sacrificing performance. Compared to previous generations, it delivers around 10 percent higher energy density, a meaningful gain in an era where every kilometer of range counts. Crucially, the cell has been developed in parallel with Volkswagen’s new “cell-to-block” battery system. This tighter integration improves packaging efficiency, reduces weight, and translates into tangible benefits in range, efficiency, and overall performance.

Salzgitter isn’t just another factory; it’s the blueprint. Initial capacity is set at up to 20 GWh annually, enough to supply batteries for approximately 250,000 electric vehicles. If demand requires it, the site can be expanded to 40 GWh. More importantly, Salzgitter will serve as the lead plant for future PowerCo gigafactories, including planned sites in Valencia, Spain, and St. Thomas, Canada.

From an automotive perspective, this move signals a shift in how legacy manufacturers approach electrification. Instead of relying almost entirely on suppliers, Volkswagen is vertically integrating one of the most critical components of an EV. Batteries are no longer just parts; they define cost structures, vehicle architecture, and brand competitiveness.

For customers, the implications should be equally significant. Standardized cells promise more predictable pricing, faster development cycles, and quicker rollout of new technologies across multiple models. The arrival of LFP-based unified cells in the future could also open the door to more affordable electric vehicles, while solid-state development keeps the long-term performance race alive.

PowerCo’s Salzgitter launch won’t grab headlines like a new sports car or concept vehicle, but its importance may ultimately outweigh both. In the electric era, batteries are the new engines—and Volkswagen has just started building its own at scale, right in the heart of Europe.

Source: Volkswagen

News

Porsche vs. Time: Inside the Relentless Engineering Behind Its Next-Gen EV Batteries

Battery aging may be as inevitable as gravity, but at Porsche, inevitability is just another engineering challenge to outsmart. Lithium-ion cells naturally shed one to five percent of their capacity in the first year—a phenomenon engineers politely call the “initial drop.” Porsche’s solution? Build batteries that start life with extra headroom, so the real-world state of health (SoH) fades far more slowly than physics would prefer.

This kind of thinking defines the brand’s most recent work behind the scenes—an obsessive, methodical quest to turn fast charging, durability, and safety into something approaching sorcery. And nowhere is that clearer than in the new Taycan.

Heat, Stress, and the Restaurant Metaphor That Explains Everything

At the cell level, an EV battery is a bustling ecosystem of ions, particles, and microscopic mechanical stress. Lithium shuttles back and forth across an internal membrane during charging and discharging, expanding and contracting like marathoner lungs. Fill the tank—charge the battery—and resistance rises. Drain it, and resistance drops.

“Batteries actually want to be discharged. They have to be forced to charge,” says Carlos Alberto Cordova Tineo, one of Porsche’s leads in battery cell development and fast charging. To explain the complexity, he uses the most unexpected analogy: a restaurant.

Temperature? That’s the door—the warmer it is, the wider it opens, and the faster ions flow in. Battery age? That’s reduced seating capacity; fewer chairs mean longer queues. State of charge? Already-occupied tables. And when the line gets too long, people give up. For lithium-ion cells, that “giving up” is lithium plating: lithium that gets deposited as inactive metal instead of nestling safely into the anode. It’s a primary cause of capacity loss.

Porsche’s answer is “making the door as wide as possible”—intelligent thermal management, tightly controlled charging currents, and cell chemistry designed for abuse.

Fast Charging, But Make It Last for 300,000 Kilometers

Porsche knows its customers use fast charging only around 15 percent of the time. But in development, the company pushes far past reasonable: stress-testing at 50 percent fast-charge cycles, blasting batteries with temperature swings from 60 to 100°C, and simulating mileage stretching to 300,000 km.

The results show up in the latest Taycan’s battery pack. New cells reduce internal resistance, and cooling has received a major overhaul. Passive cooling inside each cell module, a redesigned cooling plate with capacity bumped from 6 to 10 kW, and beefier busbars now allow higher currents without melting anything important.

The payoff? Charging from 10 to 80 percent now takes 18 minutes, down from 21.5 in the previous generation—even with a larger battery. Peak charging power climbs from 270 to 320 kW, and the system can now start fast-charging at a chilly 15°C, instead of 25°C. Translation: more real-world fast-charging scenarios, fewer coffee-break-length stops.

And while capacity grows from 93.4 to 105 kWh, weight drops by 9 kilograms. That’s very Porsche: larger, faster, and lighter.

Bigger Discharge Current = Bigger Grin

The Taycan’s performance bump isn’t just about power—it’s about current. Porsche has increased the discharge limit from 860 to 1,100 amps. That means more instantaneous shove off the line and stronger acceleration deeper into the throttle. All of this while keeping the battery cooler, happier, and healthier over the long term.

When Safety Is Non-Negotiable

EV batteries operate under immense stress, and Porsche tests them like they assume the worst will happen every day. One test submerges the battery more than a meter deep in water; no droplets may infiltrate the sealed housing. Another coats the pack in corrosive saltwater, testing resistance to chemical assault.

Crash safety is equally extreme. High-voltage components are tucked into low-risk zones. Sensors detect abnormal stresses almost instantly, isolating motors and draining residual energy to prevent electric shock. Components such as battery modules are tested far beyond what any real-world crash could generate.

In Porsche’s Weissach testing facility, a Macan e-SUV was recently slammed sideways into a rigid pole. After the horrific crunch? The high-voltage battery showed virtually no deformation. That’s the standard.

The Porsche Promise: Fast, Fearless, and Forever

Walk through Porsche’s battery-development halls and one theme emerges: every test is deliberately harsher than anything a customer will experience. No compromises on charging speed. No compromises on safety. No compromises on longevity or reliability.

It’s a philosophy that seems almost contradictory—push the battery harder so it lasts longer—but it’s quintessential Porsche logic. Make it stronger than necessary so the owner never has to think about it.

In an era where EVs are defined by their batteries, Porsche isn’t just future-proofing its cars—it’s future-proofing its reputation. And judging by the latest Taycan’s leap in charging speed, thermal management, power delivery, and safety, the brand’s approach to battery engineering is beginning to look like its next big performance advantage.

Source: Porsche