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South 8 Technologies

Powering critical defense and commercial operations with extreme-temperature liquefied gas batteries.

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Jungwoo Lee

Chief Executive Officer and Co-Founder at South 8 Technologies

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Employees 21–50
Headquarters United States
South 8 Technologies replaces the liquid inside a lithium-ion battery cell with liquefied gas. Conventional electrolytes thicken in the cold, which is why batteries fail in freezing conditions. South 8's patented LiGas electrolyte enables industry-leading cold performance (down to -60°C), improved safety, faster charging, and longer cycle life while remaining compatible with existing battery manufacturing infrastructure. South 8 holds 68 patents and serves defense, aerospace, mobility, and energy storage markets.

Notable Achievements

  • Raised $33M from Anzu Partners, Lockheed Martin, W.L. Gore, LG, Shell, and Porsche.
  • 10 MWh installed, with purchase orders from defense primes in delivery.
  • Technology evaluated by over 10 OEMs, with several progressing to product development.

Currently Operating in 159 Regions

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