F

Factorial Energy

Develops solid-state battery systems for EVs

Battery Production Manager - Mass Production

Full-TimeUpdated on 10/15/2026
No salary listed
Expert
Cheonan-si, Chungcheongnam-do, South Korea
In Person
Manufacturing & Production Operations

About the job

Requirements
  • Experience in lithium-ion battery cell mass production.
  • Knowledge of Lean Manufacturing, Six Sigma, Total Productive Maintenance (TPM), and Overall Equipment Effectiveness (OEE).
  • Experience with Advanced Product Quality Planning (APQP), Potential Failure Mode and Effects Analysis (PFMEA), Control Plans, Statistical Process Control (SPC), and IATF 16949 manufacturing requirements.
  • Experience supporting manufacturing scale-up and capacity expansion.
  • At least 8 years of experience.
  • Green Belt or Black Belt certification is a plus.
Responsibilities
  • Lead and manage daily production operations to meet safety, quality, delivery, and productivity targets.
  • Develop and execute production plans to achieve customer demand while maximizing equipment utilization and labor efficiency.
  • Manage production supervisors, technicians, and operators, providing coaching, performance management, and workforce development.
  • Monitor production key performance indicators, including throughput, yield, Overall Equipment Effectiveness (OEE), cycle time, scrap rate, and labor productivity.
  • Drive continuous improvement initiatives using Lean Manufacturing, Six Sigma, and problem-solving methodologies.
  • Collaborate with Process Engineering, Quality, Maintenance, Supply Chain, Planning, and Environmental, Health, and Safety (EHS) teams to ensure smooth production operations.
  • Identify production bottlenecks and implement corrective actions to improve efficiency and reduce downtime.
  • Ensure compliance with safety regulations, environmental requirements, and company policies.
  • Support new product introduction (NPI), process validation, and production ramp-up activities.
  • Manage production budgets, labor planning, overtime, and resource allocation.
  • Lead root cause analysis for quality and production issues and implement sustainable corrective actions.
  • Ensure accurate production reporting and maintain manufacturing documentation.
  • Drive a culture of operational excellence, accountability, and continuous improvement.
Desired Qualifications
  • Green Belt or Black Belt certification.

About the company

F

Factorial Energy

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Factorial Energy develops FEST solid-state battery systems for the automotive market. Its solid electrolyte platform replaces liquid electrolytes to improve safety, energy density, and efficiency, and is designed for integration by OEMs and battery manufacturers for EVs. The company differentiates itself through end-to-end supply-chain collaboration and its own large-scale production capability, including a new 67,000 sq ft factory, with testing in high-spec EVs before broader rollout. Its goal is to deliver safe, high-energy-density batteries at scale to accelerate electric vehicle adoption.

Company Size

51-200

Company Stage

IPO

Headquarters

Woburn, Massachusetts

Founded

2013

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Simplify's Take

What believers are saying

  • Mitsui Kinzoku signed a September 17, 2026 JDA to industrialize Solstice.
  • Factorial’s June 11, 2026 Dodge Charger road tests proved automotive-grade integration.
  • The July 2026 aerospace order and drone tests broaden revenue beyond passenger EVs.

What critics are saying

  • SK On’s July 29, 2026 MOU is non-binding, delaying scale commitments.
  • Toyota and Chinese battery firms are racing solid-state commercialization, compressing Factorial’s 2027 window.
  • If OEM pilots stall, Factorial loses leverage and faces existential funding pressure post-IPO.

What makes Factorial Energy unique

  • Factorial runs fabless, partnering with SK On and Mitsui Kinzoku instead of building gigafactories.
  • Solstice uses sulfide solid electrolyte and dry-cathode processing for higher density manufacturing.
  • Mercedes, Stellantis, Hyundai, and Kia validate Factorial across automotive, aerospace, and defense programs.

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Benefits

  • Health Insurance
  • Dental Insurance
  • Vision Insurance
  • Unlimited Paid Time Off
  • 401(k) Company Match
  • 401(k) Retirement Plan
  • Education Assistance Plan
  • Short-term Disability Insurance
  • Long-term Disability Insurance

Growth & Insights and Company News

Headcount

6 month growth

0%

1 year growth

-1%

2 year growth

-5%
Chasing Cars
Oct 12th, 2026
Peugeot RCZ Vision concept transforms coupe into 1000-volt grand tourer with 600km of range.

Peugeot RCZ Vision concept transforms coupe into 1000-volt grand tourer with 600km of range. 3 hours ago Solid-state battery technology, 10-minute charging times and holographic displays are among some of the reasons the RCZ Vision is turning heads in Paris Peugeot has unveiled a modern-day successor to the RCZ at the Paris Motor Show, which transforms the front-driven coupe into a 1000-volt monster with grand touring built in mind. For now, it remains a concept but Peugeot has said it may go into production in the coming years, with the brand already developing key hardware for the concept, such as the 110mm solid-state battery collaboration with the US-based Factorial Energy. That battery is said to offer up to 600km of range and a 10-80 percent charging time of just 10 minutes, making the reborn RCZ Vision a long-legged EV that's quick to get back on the road. On the road, it's said to achieve an efficiency of 11.5 kWh/100km according to the WLTP standard. Both brake-by-wire and steer-by-wire (meaning there is no physical connection between the driver and the turning wheels or brakes), feature on the concept, controlled by the 'Hypersquare' steering wheel, which is joined by a series of transparent Micro LED displays to beam information into the cabin. A power output of 372 kW is cited but it's not clear how many motors or driven wheels are at play, with Peugeot putting far greater emphasis on the Level 2++ hands-free autonomous driving system. The design is clearly striking, with the brand's three-line lion's crawl styling found across the front and rear facia, joined by a double-bubble roof which is said to house up to four occupants.

Read Magazine
Sep 18th, 2026
Mitsui Kinzoku partners with Factorial to scale all-solid-state battery manufacturing.

Mitsui Kinzoku partners with Factorial to scale all-solid-state battery manufacturing. September 18, 2026 September 17, 2026 Factorial Energy Inc., a global leader in solid-state battery technology, announced a strategic partnership with Mitsui Kinzoku Company, Limited to support the industrialization of its Solstice(TM) all-solid-state battery platform. Mitsui Kinzoku is a leading producer of sulfide-based solid electrolytes for all-solid-state batteries, one of few companies worldwide with foundational technology in this space, and already the global leader in ultra-thin copper foil, with an estimated 90% share of the semiconductor market for that foil. That materials science expertise underpins its A-SOLiD(TM) sulfide solid electrolyte, unveiled in 2016 and advancing toward mass production at a dedicated plant in Saitama, Japan. "I am very pleased that we have been able to enter into this joint development agreement with Factorial," said Dr. Kiyotaka Yasuda, Senior Executive Officer, General Manager, Business Creation Division of Mitsui Kinzoku Company, Limited. "Batteries are a key technology for realizing an electrified society, but significant technical challenges still remain. That is precisely why we believe it is necessary to go beyond the extension of existing technologies and take on the challenge of creating new value. By leveraging Mitsui Kinzoku's long-established expertise in materials and manufacturing technologies and combining it with Factorial's advanced technological capabilities, we aim to accelerate the realization of next-generation batteries." Factorial remains the fabless innovator across the platform, leading cell design, process development, supply chain qualification, line integration, and manufacturing validation. "Battery innovation can't be done by one single company," said Siyu Huang, CEO of Factorial. "It's driven by the entire supply chain and, increasingly, by an entire industry coalition. Mitsui Kinzoku's foundational electrolyte technology brings critical materials expertise to our work to move Solstice(TM) toward commercial deployment. We're not just building a battery. We're building the connective thread that helps the whole industry move forward together." As robotics, aerospace systems, and AI-enabled infrastructure ask more of the physical world, energy is fast becoming the defining constraint on what's possible. Factorial calls this the emergence of the energy layer - the battery infrastructure needed to power the next era of mobility, aerospace and physical intelligence. Built for that layer, Solstice(TM), Factorial's sulfide-based all-solid-state battery platform, delivers high energy density and improved thermal stability, with proprietary dry-cathode processing enabling more cost-effective manufacturing. This collaboration builds on Factorial's recent momentum, including strategic investments from IQT and POSCO Future M; its first commercial orders for passenger vehicles in January and for aerospace in July; expanded automotive and industrialization partnership programs; and its June 2026 Nasdaq listing under the ticker symbol FAC.

Yahoo Finance
Sep 17th, 2026
Factorial and Mitsui Kinzoku partner to scale all-solid-state battery manufacturing

Factorial Energy has partnered with Mitsui Kinzoku to accelerate the industrialisation of its Solstice all-solid-state battery platform. The companies signed a Joint Development Agreement to scale up production. Mitsui Kinzoku is a leading producer of sulfide-based solid electrolytes and holds an estimated 90% share of the semiconductor market for ultra-thin copper foil. The company operates a dedicated plant in Saitama, Japan, advancing its A-SOLiD sulfide solid electrolyte towards mass production. Factorial will lead cell design, process development, supply chain qualification, line integration and manufacturing validation. The partnership combines Mitsui Kinzoku's materials and manufacturing expertise with Factorial's battery technology capabilities. "We're building the connective thread that helps the whole industry move forward together," said Siyu Huang, Factorial's chief executive officer.

electrive
Aug 5th, 2026
Factorial and Tulip Tech partner on solid-state batteries for drones.

Factorial and Tulip Tech partner on solid-state batteries for drones. Factorial Energy and Dutch battery specialist Tulip Tech have entered a strategic partnership to commercialise solid-state and lithium-metal batteries for drones. The goal is to accelerate the commercial deployment of solid-state and lithium-metal batteries in unmanned aerial vehicles (UAVs). By Carla Westerheide 05.08.2026 - 13:30 The agreement follows successful flight tests in which the partners say the battery technology increased flight range by more than 30 per cent compared to conventional lithium-ion cells. The partners now want to set up a commercialisation framework covering joint customer engagement and a roadmap towards volume production. The collaboration marks Factorial's expansion into aerospace applications after focusing primarily on the automotive sector. "Last year our automotive cell platform powered a historic 1,200+ kilometre drive on a single charge. This year it's the sky," said Siyu Huang, CEO of Factorial. Tulip Tech, based in Den Bosch in the Noord-Brabant province in the Netherlands, develops high-density battery systems for drones and supplies more than 250 customers across the defence, security and commercial sectors. The company says it manufactures more than 100,000 battery packs per month and specialises in customised battery systems designed for specific mission requirements. According to the official statement, the partners see growing demand for longer-range UAVs in commercial, industrial and defence applications, where higher energy density can extend flight times, increase payload capacity and improve mission flexibility. They cite energy storage as one of the main constraints on further advances in unmanned aviation. Factorial says its solid-state and lithium-metal battery platforms offer higher energy density while reducing weight, making them suitable for applications ranging from road vehicles to aircraft and space systems. The US battery specialist is backed by several automotive groups including Mercedes-Benz, Stellantis, and Hyundai-Kia. All three automotive groups plan to use Factorial's high-performance, lightweight solid-state batteries in future electric vehicles, which are expected to enable a range of over 1,200 kilometres.metres. 0 comments. about "Factorial and Tulip Tech partner on solid-state batteries for drones"

The Electric Viking
Jul 30th, 2026
Factorial Energy and SK On Partner to explore large-scale solid-state battery production.

Factorial Energy and SK On Partner to explore large-scale solid-state battery production. Factorial Energy, a leading U.S. battery innovator, has signed a Memorandum of Understanding with South Korea's SK On to investigate mass production of advanced solid-state batteries. The collaboration could accelerate the adoption of next-generation battery technology across the electric vehicle industry. Factorial and SK On join forces. Factorial Energy and SK On have entered into a Memorandum of Understanding (MoU) to explore the technical and manufacturing feasibility of Factorial's FEST solid-state batteries. SK On, known for its extensive lithium-ion battery manufacturing footprint, could provide the scale needed to bring Factorial's technology to market. The partnership will focus on integrating Factorial's solid-state battery technology into existing manufacturing infrastructure, rather than building new, dedicated facilities. This approach aims to streamline the path to commercialization and leverage SK On's global production expertise. Solid-State batteries: The next step for evs. Solid-state batteries are widely regarded as a major advancement for electric vehicles, promising higher energy density and improved safety compared to conventional lithium-ion cells. Factorial's FEST solid-state batteries are already being tested by major automakers, including Mercedes-Benz, Stellantis, and Karma. In addition to automotive applications, Factorial is developing these batteries for use in mobility, high-performance markets, and energy storage systems. Competitor comparison. While Factorial and SK On are advancing solid-state technology, several Chinese automakers and Japanese firms, such as Toyota, are also nearing large-scale production of solid-state cells. This global race highlights the increasing competition to commercialize solid-state batteries and reshape the EV industry. Historical context. Factorial Energy's revenue reached $263M (~AUD 377.1M) in 2025, up from $100M (~AUD 143.4M) in 2024. This rapid growth underscores the rising demand and investment in next-generation battery technologies. Why this matters. The collaboration between Factorial and SK On could help overcome one of the main barriers to solid-state battery adoption: scalable manufacturing. By leveraging SK On's existing facilities, the partnership aims to accelerate the commercialization of advanced batteries that could benefit a wide range of electric vehicles and energy storage solutions. What this means for buyers. For consumers, the progress in solid-state battery technology could eventually translate into electric vehicles with longer range, faster charging, and enhanced safety. Buyers should watch for announcements from automakers like Mercedes-Benz, Stellantis, and Toyota, as these companies are actively testing or developing vehicles with solid-state batteries. Key specs. * Partnership Type: Memorandum of Understanding (MoU) * Battery Technology: FEST solid-state batteries * Testing Partners: Mercedes-Benz, Stellantis, Karma * 2025 Factorial Revenue: $263M (~AUD 377.1M) * 2024 Factorial Revenue: $100M (~AUD 143.4M) * Manufacturing Partner: SK On Sharing is caring. Sam Evans. Independent EV news commentator and founder of The Electric Viking. Covering the electric vehicle revolution for a global audience of 350K+ on YouTube. Viking merchandise. T-shirts, mugs, hoodies, bags Discover more Energy & Utilities Company News Never miss an update!!! Want expert advice on electric vehicles, battery tech, solar energy, or the future of emerging technologies? You can now book a 1-on-1 consultation with Sam Evans - The Electric Viking. Discover more electric vehicles Automotive Industry