Cosmos Lab
Cosmos Lab is a South Korean battery manufacturer founded in 2021 that develops non-flammable aqueous zinc-bromine "water battery" cells (Earth P6 series) as a safer, lower-carbon alternative to lithium-ion, selling prismatic and pouch cells via B2B channels to ESS, UPS, micro-mobility, and consumer electronics manufacturers, with anchor partnerships at SoftBank and Sungrow Power Korea.
- Company typePrivate
- Founded2021
- HeadquartersSeongnam, South Korea
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What Cosmos Lab does
Cosmos Lab Co., Ltd. is a South Korean deep-tech battery manufacturer founded in 2021 and headquartered in Siheung-si, Gyeonggi-do. The company develops aqueous zinc-bromine "water battery" cells under the Earth P6 product line, marketed as a non-flammable, low-carbon alternative to lithium-ion chemistry. Its core technology substitutes lithium/cobalt with zinc and bromine electrodes in a water-based electrolyte, eliminating thermal runaway and fire risks; the company pairs this chemistry with a proprietary solvent-free dry electrode manufacturing process and a Low Carbon Manufacturing Program that uses wood-waste-derived activated carbon, claiming 95% lower CO2 emissions versus lithium-ion and an order-of-magnitude reduction in gigawatt-scale capex. Product performance includes 100Wh/kg energy density, 5000+ cycle life at room temperature, and operation from -40°C to +60°C.
The company sells prismatic cells (Earth P6-15, P6-30, targeting 15Ah and 30Ah capacities for utility ESS, residential ESS, UPS, and micro-mobility) and pouch cells (P6-100 through P6-1000, 100mAh to 1000mAh for small electronics, sensors, smart watches, and electronic shelf labels). Cosmos Lab operates a B2B direct-sales model targeting enterprise manufacturers of energy storage systems, micro-mobility devices, and consumer electronics, with stated target pricing of $50/kg versus ~$70/kg for LFP batteries. It has supplied evaluation samples to Samsung Electronics and Naver Labs, and is anchored by strategic partnerships with SoftBank Corp. (for AI data center BESS cell manufacturing at Sakai, Japan, targeting GWh-scale by FY2028), Sungrow Power Korea (ESS co-development and standardization), and Hyundai Motor's ZeroOneNE open innovation platform. A 10MW/year pilot production line was under construction in Siheung in 2024 as the foundation for planned gigawatt-scale expansion, with management targeting a 2027 IPO.
Cosmos Lab firmographics
Firmographics- Name
- Cosmos Lab
- Legal name
- Cosmos Lab Co., Ltd.
- Website
- https://cosmoslab.kr
- Company type
- Private
- Founded year
- 2021
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Cosmos Lab is a South Korean battery manufacturer founded in 2021 that develops non-flammable aqueous zinc-bromine "water battery" cells (Earth P6 series) as a safer, lower-carbon alternative to lithium-ion, selling prismatic and pouch cells via B2B channels to ESS, UPS, micro-mobility, and consumer electronics manufacturers, with anchor partnerships at SoftBank and Sungrow Power Korea.
- Ownership category
- akta.pro rank
Cosmos Lab industry classification
Industry- Product category
- Energy Storage Batteries
- NAICS
- Battery Manufacturing (33591)
- akta.pro primary industry
- Battery Cells (Li-ion, LFP, Sodium-ion, Lead-acid, NiMH) (IMAGAHAA)
- akta.pro secondary industry
- Battery Raw Materials Mining & Refining (Lithium, Nickel, Cobalt, Manganese, Graphite) (EUAFABAA)
Keywords
Where Cosmos Lab is headquartered
LocationHeadquarters
- HQ city
- Seongnam
- HQ country
- South Korea
- HQ region
- Asia
Offices3 records
Markets served
Cosmos Lab business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Technology or R&D, Personnel, Supply Chain, Operations, Marketing or Sales
Revenue model
- Water Battery Cell Sales: B2B sales of prismatic and pouch-type water battery cells to manufacturers of energy storage systems, micro-mobility devices, and UPS equipment. Direct product sales model with samples supplied to Samsung Electronics and Naver Labs. Target pricing of $50/kg compared to LFP batteries at ~$70/kg.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Unit Pricing | Multi-year contract | Prismatic Battery Cells (Earth P6 series) |
| Unit Pricing | Multi-year contract | Pouch Battery Cells (Earth P6 series) |
Go-to-market motion1 record
Distribution channels3 records
Marketing channels3 records
Cosmos Lab product offering
Product offeringCore offering
Cosmos Lab designs and manufactures aqueous zinc-bromine water battery cells in prismatic and pouch form factors under the Earth P6 series. The company sells these cells B2B to manufacturers of energy storage systems (ESS), micro-mobility devices, UPS systems, and small electronics. The proprietary water-based electrolyte technology eliminates the fire and explosion risks inherent in lithium-ion batteries while enabling low-carbon manufacturing and competitive energy density.
Product overview
Cosmos Lab is a deep-tech startup founded in 2021 that develops and manufactures aqueous zinc-bromine water battery cells — a non-flammable, eco-friendly alternative to lithium-ion batteries. The company offers two form factors under the Earth™ P6 product line: Prismatic cells (15Ah and 30Ah) targeting medium-to-large applications such as UPS systems, utility-scale energy storage systems (ESS), residential ESS, and micro-mobility; and Pouch cells (ranging from 100mAh to 1000mAh) targeting small electronics including electricity meters, electronic shelf labels (ESL), sensors, smart watches, and toys. All products share the same core zinc-bromine aqueous electrolyte technology platform, which provides 100% non-flammability, temperature tolerance, and a low-carbon manufacturing process using wood waste-derived activated carbon.
Differentiator
Problem solved
Functional benefit
Brands
- Earth™ P6 Series: Non-flammable water battery product line including prismatic and pouch cell formats for ESS, UPS, and micro-mobility applications.
Products and services
- Earth P6-15 (Prismatic Battery) Prismatic-format aqueous zinc-bromine battery cell with 15Ah capacity, designed for UPS, utility-scale ESS, residential ESS, and micro-mobility applications. Features 100% non-flammability, temperature tolerance, long cycle life, and eco-friendly low-carbon manufacturing.
- Earth P6-30 (Prismatic Battery) Prismatic-format aqueous zinc-bromine battery cell with 30Ah capacity (45mm height, 173mm length, 115mm width), designed for UPS, utility-scale ESS, residential ESS, and micro-mobility applications. Features 100% non-flammability, temperature tolerance, long cycle life, and eco-friendly low-carbon manufacturing.
- Earth P6-100 (Pouch Battery) Compact pouch-format aqueous zinc-bromine battery cell with 100mAh capacity for small electronics including electricity meters, electronic shelf labels (ESL), sensors, smart watches, and toys. Features 100% non-flammability and low carbon footprint.
- Earth P6-200 (Pouch Battery) Compact pouch-format aqueous zinc-bromine battery cell with 200mAh capacity for small electronics including electricity meters, electronic shelf labels (ESL), sensors, smart watches, and toys. Features 100% non-flammability and low carbon footprint.
- Earth P6-300 (Pouch Battery) Compact pouch-format aqueous zinc-bromine battery cell with 300mAh capacity for small electronics including electricity meters, electronic shelf labels (ESL), sensors, smart watches, and toys. Features 100% non-flammability and low carbon footprint.
- Earth P6-500 (Pouch Battery) Compact pouch-format aqueous zinc-bromine battery cell with 500mAh capacity for small electronics including electricity meters, electronic shelf labels (ESL), sensors, smart watches, and toys. Features 100% non-flammability and low carbon footprint.
- Earth P6-1000 (Pouch Battery) Compact pouch-format aqueous zinc-bromine battery cell with 1000mAh capacity for small electronics including electricity meters, electronic shelf labels (ESL), sensors, smart watches, and toys. Features 100% non-flammability and low carbon footprint.
Quantifiable outcome
- 95% CO2 emission reduction compared to lithium-ion batteries
- +4 more outcomes
Companies that use Cosmos Lab
Customer profileNamed customers4 records
Segments4 records
Ideal customer profiles3 records
Cosmos Lab technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature5 records
Cosmos Lab partnerships and signals
Strategic signalPartnerships
Four partnerships are on record, tiered core and flagship.
- SoftBank Corp.corePartnership with SoftBank Corp. for manufacturing zinc-halogen water battery cells at SoftBank's Sakai, Osaka facility in Japan. Cosmos Lab will supply battery cells for integration into energy storage systems at SoftBank's AI data centers. Target is gigawatt-hour-scale production by fiscal year ending March 2028, with annual revenue exceeding ¥100 billion expected by FY2030. This represents the first non-lithium battery from a South Korean startup entering the Japanese market.
- DeltaX Co., Ltd.coreTripartite partnership with SoftBank and Cosmos Lab where DeltaX provides energy storage system technology for the water battery integration at SoftBank's AI data centers in Japan.
- Sungrow Power KoreaflagshipMOU signed for joint development of world-first water battery-based ESS solutions. Partnership aims to establish new industry standards and regulations for water battery technology in Korea. Sungrow provides power conversion system (PCS) integration while Cosmos Lab supplies water battery cells. Joint efforts include technology matching, standardization support, and market expansion for ESS in Korea.
- Hyundai Motor Group (ZeroOneNE)coreCosmos Lab is a startup supported by Hyundai Motor's open innovation platform ZeroOneNE (ZER01NE), receiving support for commercialization and market access through the automotive conglomerate's innovation program.
Scale indicators8 records
Recent moves6 records
Expansion highlights6 records
Cosmos Lab competitors and assessment
Company assessmentBroad incumbents
- CATL: CATL is the world's largest battery manufacturer with leading LFP cost position and aggressive sodium-ion commercialization. Sets the cost benchmark and scale bar that Cosmos Lab's $50/kg target must compete against in the same utility ESS, micro-mobility, and stationary storage segments.
- LG Energy Solution: LG Energy Solution (KRX: 373220) is one of the world's largest lithium-ion battery manufacturers with a broad ESS product line competing in the same data center UPS, utility ESS, and micro-mobility markets. Serves as the dominant Korean incumbent whose supply chain and customer relationships Cosmos Lab must navigate.
- Samsung SDI: Samsung SDI (KRX: 006400) is a global lithium-ion battery incumbent with established ESS and micro-mobility product lines, and is already an evaluation customer of Cosmos Lab. Represents both a potential future competitor and a strategic partner/customer relationship that Cosmos Lab must manage carefully.
Direct peers
- Eos Energy Enterprises: Eos Energy Enterprises (NASDAQ: EOSE) is the most directly comparable peer, developing zinc-based aqueous battery systems (Znyth) for utility-scale and commercial stationary storage. Both target the same ESS market with non-flammable, long-duration chemistry, though Eos is further along in commercial deployments and publicly listed.
- Redflow Limited: Redflow (ASX: RFX) manufactures zinc-bromine flow batteries for stationary storage, microgrid, and telecom applications, sharing the same core chemistry as Cosmos Lab. Both target similar use cases (off-grid, microgrid, commercial/industrial storage) with a non-flammable aqueous electrolyte value proposition.
- Primus Power: Primus Power develops zinc-based flow batteries (EnergyPod) for commercial, industrial, and utility-scale energy storage, using similar aqueous zinc chemistry as Cosmos Lab. Both target long-duration stationary storage with cost and safety advantages over lithium-ion.
Emerging players
- Form Energy: Form Energy is developing iron-air batteries for >100-hour long-duration stationary storage, attracting over $1B in capital from backers including Bill Gates. Targets the same utility-scale, non-lithium stationary storage market as Cosmos Lab with a different low-cost, abundant-materials chemistry approach.
- Salient Energy: Salient Energy is an emerging zinc-based battery developer (zinc-air / zinc-manganese chemistries) targeting stationary storage with non-flammable, low-cost aqueous chemistry. Overlaps with Cosmos Lab on zinc-based, non-lithium approach for ESS, but uses a different sub-chemistry.
- Natron Energy: Natron Energy develops sodium-ion batteries for data center, EV charging, and industrial stationary storage, using Prussian blue chemistry that is non-flammable and targets similar safety-critical applications. Competes with Cosmos Lab in the data center UPS and ESS segments with a different non-lithium chemistry.
- ESS Inc. ESS Inc. (NYSE: GWH) manufactures iron flow batteries for long-duration stationary storage, sharing the aqueous flow battery architecture and non-flammable chemistry positioning as Cosmos Lab. Both target utility-scale and commercial ESS with non-lithium, abundant-materials value propositions.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Cosmos Lab social profiles
Digital presenceCosmos Lab financial estimates
Financial estimateRevenue estimate
Valuation estimate
Cosmos Lab leadership team
Management profileNumber of profiles
Profiles1 record
Cosmos Lab funding detail
Funding detailFunding overview
Funding rounds3 records
Investors3 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Cosmos Lab M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Cosmos Lab
What does Cosmos Lab do?
Cosmos Lab designs and manufactures aqueous zinc-bromine water battery cells in prismatic and pouch form factors under the Earth P6 series. The company sells these cells B2B to manufacturers of energy storage systems (ESS), micro-mobility devices, UPS systems, and small electronics. The proprietary water-based electrolyte technology eliminates the fire and explosion risks inherent in lithium-ion batteries while enabling low-carbon manufacturing and competitive energy density.
Is Cosmos Lab a public or private company?
Cosmos Lab is a private company. It is classified as venture growth investor backed and is currently operating.
When was Cosmos Lab founded?
Cosmos Lab was founded in 2021. It employs 11 to 50 people.
Where is Cosmos Lab based?
Cosmos Lab is headquartered in Seongnam, South Korea, in the Asia region.
How does Cosmos Lab make money?
One revenue line is on record: water Battery Cell Sales.
Who are Cosmos Lab's main competitors?
Broad incumbents on record are CATL, LG Energy Solution and Samsung SDI. Direct peers are Eos Energy Enterprises, Redflow Limited and Primus Power. Emerging players are Form Energy, Salient Energy, Natron Energy and ESS Inc..
Does Cosmos Lab have an API?
No public API is recorded for Cosmos Lab.
What industry is Cosmos Lab in?
Cosmos Lab's product category is Energy Storage Batteries. Its primary akta.pro industry code is IMAGAHAA, Battery Cells (Li-ion, LFP, Sodium-ion, Lead-acid, NiMH), with a secondary code of EUAFABAA, Battery Raw Materials Mining & Refining (Lithium, Nickel, Cobalt, Manganese, Graphite). Its NAICS code is 33591.