South 8 Technologies

Name

South 8 Technologies

Legal name

South 8 Technologies, Inc.

Website

https://south8.com

Company type

Private

Founded year

2015

Operating status

Operating

Headcount range

11–50 employees

Ownership category

akta.pro rank

Product category

Advanced Lithium-Ion Battery Technology

NAICS

Electrical Equipment Manufacturing (3353)

SIC

Electrical Industrial Apparatus (3620)

akta.pro primary industry

Battery Pack Manufacturing & Module Assembly (EUAFABAI)

akta.pro secondary industries

Battery Cell Manufacturing (EV) (IMACACAB), Battery Pack & Module Manufacturing (EV) (IMACACAA)

Keywords

• Lithium-ion battery cells
• Liquefied gas electrolyte
• Extreme temperature batteries
• Defense battery technology
• Energy storage solutions

Headquarters

HQ city

San Diego

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Technology or R&D, Operations, Supply Chain, Marketing or Sales, Infrastructure

Revenue model

1. Finished LiGas Battery Cells: Sale of finished LiGas battery cells (18650 format) directly to customers for defense, aerospace, and specialty applications. Cells are manufactured by South 8 in San Diego, CA.
2. LiGas Electrolyte and Injection Integration: Sale of LiGas electrolyte and proprietary gas injection systems to cell manufacturers for integration into their production lines. The injector delivers precise doses of liquefied gas under controlled pressure for standard cylindrical cell formats.
3. Joint Development Agreements: Strategic co-development partnerships with automotive manufacturers and defense customers for qualification programs and product development.

Go-to-market motion3 records

Distribution channels3 records

Marketing channels5 records

Core offering

South 8 Technologies develops and manufactures LiGas, the world's first liquefied gas electrolyte for lithium-ion batteries, which replaces conventional liquid electrolytes to enable operation from -60°C to +60°C with enhanced safety. The company sells finished LiGas battery cells in 18650 cylindrical format directly to defense, aerospace, and specialty customers, and separately offers a LiGas Electrolyte Injection System kit that allows cell manufacturers to integrate LiGas technology into their own cylindrical cell production lines. Manufacturing is based in San Diego, California, with planned expansion to 100 MWh of electrolyte and 2 MWh of cell production annually.

Product overview

South 8 Technologies offers LiGas, the world's first liquefied gas electrolyte platform for lithium-ion batteries, available in two distinct formats: (1) finished LiGas Battery Cells sold directly to customers in 18650 cylindrical format, and (2) the LiGas Electrolyte Injection System — a proprietary gas injection system and integration kit for cell manufacturers. The company's Arctic LiGas 18650 Cells represent a specialized sub-brand targeting extreme cold-weather defense applications. LiGas replaces conventional liquid electrolytes, unlocking enhanced performance, safety, and versatility across extreme temperature ranges from -60°C to +60°C.

Differentiator

Problem solved

Functional benefit

Brands

• Arctic™ LiGas: LiGas battery cells designed for extreme cold environments, operating from -60°C to +60°C, specifically branded for Arctic and cold-climate defense applications.
• LiGas®

Products and services

• LiGas Battery Cells Finished lithium-ion battery cells utilizing South 8's patented LiGas liquefied gas electrolyte, sold in 18650 cylindrical format to defense primes, system integrators, and aerospace customers. Cells deliver mission-ready power operating from -60°C to +60°C with enhanced safety via thermal fuse electrolyte evacuation.
• LiGas Electrolyte Injection System A proprietary gas injection system and LiGas electrolyte kit for cell manufacturers to integrate LiGas liquefied gas electrolyte into standard cylindrical lithium-ion battery production lines. The injector delivers precise doses of liquefied gas under controlled pressure, enabling LiGas adoption without major retooling.
• Arctic LiGas 18650 Cells Specialized variant of LiGas battery cells branded for extreme cold-weather and Arctic defense operations. These 18650 cells enable reliable discharge and recharge at temperatures as low as -60°C for soldier power, tactical electronics, and unmanned systems in cold environments.

Quantifiable outcome

• 2.4x longer flight time in cold conditions (7 min 41 sec vs 18 min 22 sec for LiGas)
• +3 more outcomes

Named customers5 records

Segments5 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Six partnerships are on record, tiered major and core.

• 3ME TechnologymajorStrategic or Co-development Partner · 24 February 2026Letter of Intent signed to integrate LiGas cells into 3ME's EdgeVOLT Cold Weather Variant battery solution for defense applications in extreme cold-weather and Arctic operations. Targets ANZUS, AUKUS, and NATO alliances.
• KULR Technology GroupmajorTechnology or Integration · 9 December 2025Strategic collaboration as part of aerospace initiative with LG Energy Solution and NASA to develop cold-temperature battery solutions for deep space missions. KULR developing One Space battery architecture platform with South 8's LiGas cells.
• LG Energy SolutioncoreStrategic or Co-development Partner · 11 November 2025Strategic partnership to jointly develop space-rated lithium-ion batteries capable of operating at ultra-low temperatures down to -60°C. Part of broader aerospace initiative with KULR and NASA for deep space missions. South 8 manufactures cells using its LiGas technology while LG supports cell design, testing, and evaluation.
• GalvionmajorStrategic or Co-development Partner · 6 November 2025Letter of Intent to integrate LiGas cells into Galvion's SoloPack battery family for soldier power solutions in extreme cold environments. Both companies will explore joint development and commercialization of next-generation battery systems for US and Northern Europe defense customers.
• CTNSmajorStrategic or Co-development Partner · 22 October 2025Letter of Intent to develop LiGas-based battery packs for defense and aerospace customers in North America, South Korea, and global markets. CTNS brings advanced battery pack design and smart manufacturing capabilities.
• NanoGrafmajorStrategic or Co-development Partner · 30 April 2024$6.4 million subcontract under U.S. Army DEVCOM C5ISR Center FAStBat program. Joint development of high-rate LiGas injection system and 18650 cell design combining NanoGraf's silicon anode with South 8's LiGas electrolyte for soldier batteries.

Scale indicators6 records

Recent moves7 records

Expansion highlights7 records

Direct peers

• Solid Power: Developer of sulfide-based solid-state batteries for automotive and defense applications. Directly comparable as a next-generation battery cell and materials company pursuing safety, energy density, and OEM partnerships, though with a different electrolyte chemistry.
• 24M Technologies: Developer of semi-solid lithium-ion battery technology and manufacturing process. Comparable as a next-gen battery cell and process technology licensor pursuing safety and cost improvements.
• NanoGraf: Silicon-anode battery materials company and South 8's joint development partner under the U.S. Army FAStBat program. Comparable as an advanced battery materials company working on defense and consumer applications.
• QuantumScape: Solid-state lithium-metal battery developer with strong automotive OEM backing (Volkswagen, PowerCo). Comparable as a next-gen battery cell/materials company targeting premium OEMs and energy density gains.
• KULR Technology Group: Battery safety and space-rated battery systems company. Direct partner of South 8 on the KULR ONE Space platform with NASA and Texas Space Commission, and a relevant peer in defense/aerospace battery systems.
• Sila Nanotechnologies: Silicon-anode battery materials company with major OEM partnerships (Mercedes, Panasonic). Comparable as an advanced battery materials startup selling drop-in technology into incumbent cell manufacturers.
• Amprius Technologies: Silicon-anode lithium-ion battery maker focused on aviation, defense, and EV applications. Closely comparable as a next-gen cell manufacturer targeting aviation/UAS and defense with premium performance.

Emerging players

• Galvion: Soldier power and head systems integrator, and South 8's strategic partner on SoloPack battery packs for extreme cold. Comparable as a defense-focused battery pack integrator sourcing cells from next-gen suppliers.
• Enovix: 3D silicon-anode lithium-ion battery maker focused on consumer electronics and EV applications. Comparable as an advanced battery cell manufacturer pursuing high energy density in commercial form factors.
• SES AI: Lithium-metal battery developer with automotive OEM JVs (Honda, GM, Hyundai). Comparable as a next-gen battery cell startup pursuing safety, energy density, and automotive qualification.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks7 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/@South8Technologies
• LinkedInlinkedin.com/company/south8technologies

Revenue estimate

Valuation estimate

Number of profiles

Profiles14 records

Funding overview

Funding rounds11 records

Investors16 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about South 8 Technologies