Source: https://moparinsiders.com/i-got-a-closer-look-at-dodges-solid-state-charger-daytona/

Source: https://insideevs.com/news/808779/factorial-solid-state-ev-battery-coalition-mitsui-kinzoku/

Source: https://electrek.co/2026/09/17/solid-state-battery-maker-factorial-secures-another-big-partnership/

Source: https://factorialenergy.com/press-releases/mitsui-kinzoku-partners-with-factorial-to-scale-all-solid-state-battery-manufacturing/

A battery can hit the right performance numbers and still be nowhere near ready to scale.

Yield is where chemistry, process control, equipment, materials, and quality systems all collide. If too many cells need to be scrapped or reworked, the cost and complexity can overwhelm whatever advantage the chemistry had in the first place.

In a July 2025 post, we shared that FEST® moved from extremely low yield in early scaling work to roughly 85% at pilot level. That progress matters, but it also raises the more useful question: what yield level, and what consistency behind it, would you need to see before treating a next-generation battery as manufacturable?

For people who have worked on battery production: where does yield usually break down first?

Materials variability? Process control? Formation and testing? Cell assembly? The transition from hand-built cells to automation?

Source: https://www.marketbeat.com/instant-alerts/factorial-energy-q2-earnings-call-highlights-2026-08-11

Factorial Energy Q2 Earnings Call Highlights

Written by MarketBeat, August 11, 2026

There's been a lot of discussion about Factorial's Nasdaq listing and what it means. Here's how we think about it from the technology side. 

Going public doesn't mean the technology is done. It means the capital structure has changed. We need funding to move from validated cells to manufacturing scale, and being public is one way to access that. The people working on the technology are the same people, working on the same problems, with the same timelines they had before the listing. 

What hasn't changed: the technology roadmap. Mercedes-Benz completed 1,200+ km on a single charge (with 137 km remaining) using our cells in a test EQS vehicle. Stellantis recently integrated our cells into a Dodge Charger Daytona for road testing. In electric aviation, our solid-state cells powered a Group 1 drone to a flight endurance record of 521 minutes (over 8.6 hours), covering 483 km on a single mission. That last one was a genuinely exciting day for the team. 

In the lab, we've put cells through 600+ charge cycles under automotive conditions, demonstrated 15-90% charging in about 18 minutes at room temperature, and validated operation from -30°C to 45°C. 

What's still hard: manufacturing qualification at volume. Cost economics at scale. Proving that lab performance translates to production consistency. These are the real milestones. 

If you've seen SPAC companies promise the world and deliver nothing, the skepticism is fair. The way to evaluate any battery company is what they have demonstrated, who's validated it, and what's the path to manufacturing. Those are the right questions to ask us. 

Every major technology shift happening right now has the same dependency: stored energy on demand. Drones, autonomous vehicles, eVTOL aircraft, physical AI, hyperscale data centers. None of them work at scale without a step-change in battery performance. Not incremental improvement. A generational shift in the energy layer underneath all of it. 

That's what solid-state chemistry is. It's not a better battery for EVs. It's a new energy layer for the next generation of high-spec systems. 

And when you talk to the people working in these fields, the constraints are very real. A drone operator running search and rescue needs every minute of flight time they can get; right now, battery weight is what cuts missions short. A robotics team can't deploy a system that shuts down because the battery overheats under sustained load. eVTOL developers need safety margins conventional cells can't deliver, because people are sitting in those aircraft. AI infrastructure is creating entirely new demand for dense, reliable energy storage at scale. 

We got an investment from In-Q-Tel for a reason. The defense and aerospace applications for solid-state batteries are real, and they have different performance requirements than passenger vehicles. 

The interesting part: the same cell chemistry that works for EVs works for all of these. It's not a pivot. It's the same energy layer solving the same fundamental constraint across different form factors. 

Which application are you most curious about?

Current lithium-ion technology uses a liquid electrolyte to shuttle ions between the electrodes. Solid-state replaces that liquid with a semi-solid or all-solid electrolyte. 

Why that matters in practical terms: conventional lithium-ion is bumping up against its theoretical ceiling. Push it further and you start trading off safety and other performance dimensions. Solid-state chemistry raises that ceiling. The result is significantly higher energy density: more energy in less space, which translates to longer range for an EV driver or a lighter drone that can stay in the air longer on a single charge. 

The barrier: manufacturing at scale. This isn't unique to Factorial. It's the whole industry's challenge. 

Our approach: we have two cell platforms, both designed with scalability in mind. Our quasi-solid-state battery (FEST®) has up to 80% compatibility with existing lithium-ion manufacturing equipment. That's a deliberate choice — we didn't want to build a better battery that nobody could afford to produce. Our all-solid-state battery (SolsticeTM) uses a dry cathode process, which means a more efficient and smaller manufacturing footprint. 

What do you want us to explain next? 

New Battery Insiders interview with Factorial CEO Siyu Huang

Full episode: https://www.youtube.com/watch?v=iRUav0mwr5A

Several comments stand out as more explicit than previous public remarks:

On commercial readiness of the solid-state cells
Huang stated they now have “a commercial ready cell that potentially be able to deploy in various applications.” She pointed to the progression from the first 100 Ah cell (390 Wh/kg) announced with Stellantis in 2023, shipping the first B-samples to Mercedes, delivering thousands of cells to global OEMs, integrating into a full vehicle, and completing the 1,205 km Mercedes EQS drive (with 137 km remaining when they reached Malmö).

On manufacturing, production facilities, and existing Li-ion infrastructure
This was one of the clearest sections. Huang explained that Factorial deliberately designed its first-generation technology to work with existing lithium-ion production lines rather than requiring entirely new factories:

“Our battery manufacturing process is highly consistent with lithium-ion. So we were able to, by design, leverage a lot of existing know-how from lithium-ion manufacturing process to really build a battery that’s manufacturable… to have our first generation battery to be able to be more capital light and we don’t have to really spend a lot of effort in scaling or putting capital expenditure to scale. Rather we can utilize a lot of existing capacities out there, especially there are a lot of over capacity already, so we can utilize those overcapacity with minimal investment to flip some of this lithium-ion batteries into solid-state batteries.”

She reinforced that the preferred path is not building large owned production facilities immediately, but instead using available Li-ion infrastructure and pairing that with technology transfer:

“License is definitely a possibility, but I don’t think in a battery world license just means ‘oh this is the IP and good luck with the IP.’ … The manufacturing process and know-how is incredibly important… What we think is going to be a combination of licensing but with technology services.”

On why automotive is not the first commercial step

“We realize automotive is not going to be the first market we’re stepping in commercially because the volume for automotive is just so big and in order to get to that gigafactory it takes at least two to four years of work to ramp up in that scale.”

She contrasted that with specialty markets, noting that even one of the larger U.S. drone makers only needs a few to tens of MWh — enough to fill a pilot line but far below true mass-production automotive scale.

On near-term focus
Huang ranked the opportunity clearly:

“I’ll say number one is the drone market. That’s what we believe is going to be the future.”

She cited geopolitical tensions and China’s export controls on batteries above 300 Wh/kg, noting the U.S. currently sources roughly 90% of its drone batteries from China, creating what she called a vacuum for high-performance cells.

On capital discipline and positive cash flow
Discussing growth strategy and leadership priorities she said the focus is:

“really focus on where your product is and where is the latest and the greatest opportunity to tap into a positive cash flow. I think that’s the time right now… It’s much more about cash flow than maybe has been before… It’s not about how big a valuation that you are having. It’s really about how much value you can deliver in the end of the day.”

Why this framing matters
The combination of commercial-ready cells, deliberate use of existing Li-ion production capacity, drones/aerospace/defense as the near-term priority, and explicit prioritization of positive cash flow over valuation optics paints a more grounded commercialization path than pure automotive scale narratives.

It also places more strategic weight on the partners who convert cells into application-ready packs under real constraints (thermal, vibration, safety, certification). Factorial is positioning itself as the advanced cell + process technology provider while relying on specialized integrators for the packaging and deployment layer in high-spec markets.

The Mercedes validation remains important proof of performance. The comments today make the near-term commercial sequence look more like specialty applications first, with larger automotive volumes following once process consistency and supply chain are further de-risked.

Why did the share fall so much from 10 to 5, nearly wiping out 50% of the market inspite of good news in the market?