Samsung to Mass-Produce Solid-State Batteries for 'Super Premium' EVs
Samsung’s plan to mass-produce solid-state batteries for “super premium” electric vehicles by 2027, promising around 1,000 km (≈600 miles) of range and sub‑10‑minute fast charging, is generating both excitement and skepticism. Commenters debate the practicality of such high charging power, the maturity and manufacturability of solid‑state chemistry, fire safety, and whether these gains should first appear in consumer electronics or affordable mass‑market EVs. Many argue that real adoption hinges less on headline range numbers and more on cost per kilometer, charging infrastructure (especially for those without home charging), and long‑term battery reliability.
Range, Charging Speed, and What Metrics Matter
- Headline numbers (≈1000 km / 600+ mi range, 9‑minute charge) are seen as good for laypeople but misleading for technically minded readers.
- Some argue range is the right public metric since pack weight/volume are similar across EVs; others want gravimetric/volumetric density and efficiency instead.
- Claim of full charge in 9 minutes plus 3× range is viewed by several as marketing spin; more likely 0–80% at high power, not 0–100%.
Significant Figures and Media Framing
- Strong debate over converting “1000 km” to “621 miles.”
- One side says exact conversion misrepresents precision and undermines trust; it should be “~600 miles” or “1000 km (≈621 mi).”
- Others consider this nitpicking for a press article, not a scientific paper.
Use Cases: Premium EVs vs Consumer Electronics
- Some wonder why solid‑state isn’t going into laptops/phones first, where small capacities and high prices are tolerable.
- Counterpoints: OEMs prioritize thinness over more battery; power electronics for proportionally “350 kW‑equivalent” laptop charging would be bulky; early solid‑state cells may be too bulky or expensive.
Technical and Infrastructure Challenges
- Back‑of‑envelope math: 9‑minute charge for ~100 kWh implies ≈600–700 kW, 400–1000 V, and 600–1600 A.
- Concerns: cable thickness, cooling, arc‑flash safety, and local grid capacity.
- Others note: existing standards already move toward 800–1000 V, liquid‑cooled cables, and even megawatt‑scale charging for trucks, so it’s challenging but not absurd.
Safety and Chemistry
- Solid‑state removes flammable liquid electrolyte and is marketed as eliminating fire risk.
- Thread notes research showing shorted solid‑state cells can still get extremely hot; realistic claim is “much lower fire risk,” not zero.
Economics, Adoption, and Real‑World Use
- General expectation: tech will debut in “super‑premium” EVs due to high $/kWh and manufacturing difficulty.
- Debate over how much fast charging matters: essential for road trips, renters, high‑utilization fleets; less relevant for homeowners who charge overnight.
- Some want smaller, cheaper, simpler EVs (LFP or sodium‑ion, minimal software) more than ultra‑long‑range luxury models.
Skepticism vs Progress
- Many view this as another in a long line of solid‑state “coming soon” announcements; manufacturing scalability remains the core unsolved issue.
- Others point out that, unlike fusion, batteries have seen steady, tangible improvements, even if hype often runs ahead of deployment.