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We owe our readers a confession. Earlier this year, we ran coverage on Donut Lab’s “production-ready” solid-state battery announcement at CES 2026. The Finnish startup’s claims sounded transformative: 400 Wh/kg energy density, five-minute charging, 100,000 cycle life, and mass production right around the corner. It was the kind of story that gets contrarian investors excited. We got burned. Within weeks, Svolt Energy’s chairman Yang Hongxin publicly called it a scam, battery scientists dissected the contradictions in the specifications, and investigators uncovered a web of questionable corporate governance at the startup’s affiliated motorcycle company. No independent verification ever materialised. The lesson was expensive in credibility, if not in capital.
So when FAW Group announced on February 10 that it had integrated a lithium manganese semi-solid state battery into a production vehicle, our first instinct was caution. Another too-good-to-be-true battery headline from a company chasing attention? Not quite. This one deserves a harder look, and the investment implications are very different from the Donut Lab circus.
What FAW Actually Built
FAW, one of China’s oldest and largest automakers with joint ventures alongside Volkswagen and Toyota, partnered with a research team led by Academician Chen Jun at Nankai University. Together, through FAW’s battery subsidiary CANEB (China Automotive New Energy Battery Technology), they developed and integrated a 142 kWh lithium-rich manganese semi-solid state battery into the Hongqi Tiangong 06 electric SUV.
The headline numbers are striking. Cell-level energy density exceeds 500 Wh/kg, which is roughly double what you find in a standard Tesla 4680 cell and more than two and a half times the energy density of the best LFP batteries on the market. The 142 kWh pack represents a 67% jump in total energy capacity over FAW’s previous generation, and enables a CLTC-rated driving range of more than 1,000 km. The cathode demonstrates a specific capacity above 300 mAh/g, more than twice what high-performance LFP cells deliver.
A few technical details separate this from the usual vapourware. The battery uses an in-situ cured composite electrolyte, a hybrid approach that provides high ionic conductivity while being inherently flame retardant. The anode employs an in-situ formed lithium negative electrode, sidestepping the notorious cost and safety problems of traditional metallic lithium anodes. FAW has also developed what it calls a five-dimensional protection system covering thermal, electrical, gas, and fire risks, coordinated with cloud-based battery management.
Why This Is Different From Donut Lab
Credibility matters. FAW is a state-owned enterprise with over seven decades of history and deep ties to the Chinese government’s industrial policy. CANEB is not a mysterious startup operating out of a fenced compound. The research partnership with Nankai University, one of China’s top institutions, adds academic rigour. And the battery has been physically installed in a vehicle, not just presented as a concept at a trade show.
That said, caution is warranted. These are still prototype vehicles, not production cars rolling off a line. The 1,000+ km range claim uses China’s CLTC standard, which consistently overstates real-world performance compared to EPA or WLTP testing. Electrive, a European EV publication, noted that key details including the pack’s total weight and dimensions remain undisclosed. And FAW has not published independent third-party test results.
The difference between this and Donut Lab is the gap between plausible engineering progress and physically impossible claims. Donut Lab promised everything at once: extreme energy density, extreme cycle life, extreme charging speed, extreme temperature tolerance, and low cost. Every battery engineer who examined the specifications pointed out the thermodynamic contradictions. FAW is making one bold claim, that manganese-rich chemistry combined with semi-solid electrolyte architecture can deliver exceptional energy density, and it is backing that claim with institutional resources and a clear development roadmap.
The Manganese Thesis Takes Shape
Here is where it gets interesting for investors. FAW’s announcement does not exist in isolation. It sits at the leading edge of an emerging global consensus that manganese-rich battery chemistry may represent the most important near-term path forward for affordable, high-density EV batteries.
General Motors has been working on lithium manganese rich (LMR) cathode chemistry since 2015. In May 2025, GM and LG Energy Solution announced a breakthrough in LMR prismatic cells that deliver 33% higher energy density than the best LFP cells at a comparable cost. Their LMR cells use approximately 65% manganese, 35% nickel, and virtually no cobalt. GM’s VP of battery technology Kurt Kelty called LMR a “step change” and the company plans to begin commercial production through its Ultium Cells joint venture by 2028. Ford has announced similar LMR plans targeting the end of 2029.
The investment logic is straightforward. The EV battery industry has been dominated by four chemistry families: high-nickel NMC/NCA for performance, LFP for cost, sodium-ion for ultra-budget applications, and the perpetually promised solid-state for the future. Manganese-rich chemistry, whether in GM’s liquid electrolyte LMR form or FAW’s semi-solid state variant, threatens to occupy the sweet spot between performance and cost that none of these four categories fully serve.
Manganese is abundant, cheap, and geographically diversified in supply compared to nickel and cobalt. South Africa, Gabon, Australia, and China are all significant producers. The mineral does not carry the same ethical baggage as cobalt mining in the DRC, and it is not subject to the same geopolitical chokepoints as nickel processing in Indonesia. For an industry obsessed with de-risking supply chains, manganese offers a structural advantage.
What the Smart Money Should Watch
The semi-solid state battery space has been a graveyard of disappointment. Before FAW’s announcement, every semi-solid battery that made it into a vehicle offered no meaningful energy density improvement over conventional NMC cells. Companies like Nio, SAIC, and GAC have all pursued semi-solid approaches, but they stuck with high-nickel cathode chemistries and gained incremental improvements at best.
FAW’s shift to a manganese-rich cathode is what makes this different. It is not just a packaging innovation. It represents a fundamentally different material pathway that, if validated at scale, could reshape cost structures across the industry.
For investors, several signals are worth monitoring. First, watch for FAW’s demonstration operations, which are planned for later this year. Successful demos would move this from prototype to pre-production validation. Second, track FAW’s next-generation pack targets: they are already working toward a 200 kWh version with cell-level density above 340 Wh/kg and a claimed range exceeding 1,600 km. Third, follow GM’s LMR timeline. If both a Chinese state-backed automaker and America’s largest cell producer are converging on manganese, the supply chain implications for manganese miners, processors, and cathode material suppliers are significant.
Fourth, and perhaps most importantly, watch China’s forthcoming solid-state battery standard. CATARC (China Automotive Technology and Research Center) is developing a classification system that will formally define categories like “liquid-solid” state batteries and set measurable thresholds. Regulatory clarity will separate credible players from the next Donut Lab.
The Contrarian Take
The consensus view is that solid-state batteries are the endgame and everything else is a stopgap. Toyota, BMW, and Volkswagen continue to pour billions into sulfide-based solid-state programmes. The contrarian position is that semi-solid architectures with novel cathode chemistries, specifically manganese-rich variants, may reach production scale years before full solid-state does. FAW is not waiting for the perfect. It is shipping something that works now, with a clear iteration path toward something better.
That does not mean this is risk-free. CLTC range figures are notoriously generous. Pack-level weight data is missing. Cycle life and degradation characteristics under real-world conditions are unproven. And China’s battery industry has a history of overclaiming and under-delivering on timelines.
But compare this risk profile to the risk profile of companies betting everything on sulfide solid-state technology that still has not solved dendrite formation, pressure sensitivity, and manufacturing scalability at automotive volumes. The gap between FAW’s working prototype and Toyota’s promised 2027 to 2028 solid-state launch is the gap between demonstrated hardware and corporate press releases.
We learned our lesson with Donut Lab. Extraordinary claims require extraordinary evidence. But FAW’s announcement is not extraordinary in the way Donut Lab’s was. It is extraordinary in the way that genuine progress looks: incremental enough to be believable, ambitious enough to matter, and backed by institutions with reputations to protect.
The manganese era of EV batteries might be arriving faster than the market expects. And that is precisely the kind of mispricing a contrarian investor should be paying attention to.
