# Enpower Greentech Inc.

> Enpower Greentech is a battery maker building the next generation of lithium-metal and solid-state cells. Founded in 2012 by two post-docs from Nobel laureate John Goodenough's lab, the company designs semi-solid, quasi-solid, and all-solid-state batteries with energy densities pushing past 500 Wh/kg. Its cells power industrial drones, eVTOL aircraft, high-altitude pseudo-satellites, and electric vehicles, and it says it has shipped more than 3 million cells across its SWIFT, FLEET, and KOSMOS platforms from facilities in the US, China, Japan, and Germany.

- **Founded:** 2012
- **Headquarters:** San Jose, California, United States (administrative office in Ann Arbor, Michigan; European HQ in Karlsruhe, Germany)
- **Founders:** Dr. Sam Dai (Co-Founder & CEO), Dr. Che Yong (Co-Founder)
- **Team size:** ~23 employees at the US entity; company cites 500+ worldwide across US, China, Japan, and Germany
- **Products:** SWIFT Series, FLEET Series, KOSMOS Series, Advanced cell portfolio
- **Notable:** Broke the all-solid-state battery 400 Wh/kg energy-density barrier, FLEET cells reaching up to ~525 Wh/kg energy density, Reports 3+ million cells delivered globally

## Products & services

- **SWIFT Series** — Aerospace-grade semi-solid-state battery cells engineered for aviation - industrial drones, eVTOL, and heavy-load aircraft - with energy density up to ~403 Wh/kg; the company's highest-volume platform.
- **FLEET Series** — Lithium-metal anode paired with a quasi-solid electrolyte for stable power in extreme cold (down to -60C) and high radiation; cell energy density up to ~525 Wh/kg, targeting high-altitude pseudo-satellites and stratospheric drones.
- **KOSMOS Series** — All-solid-state battery platform with a sulfide electrolyte and lithium-metal anode, engineered for maximum safety; broke the all-solid-state 400 Wh/kg energy-density barrier.
- **Advanced cell portfolio** — Lithium-metal, silicon-carbon (Si-C), and LFP cell chemistries offered for EVs, drones, marine, robotics, and stationary energy applications.

## Achievements

- Broke the all-solid-state battery 400 Wh/kg energy-density barrier
- FLEET cells reaching up to ~525 Wh/kg energy density
- Reports 3+ million cells delivered globally
- 500+ global patents on lithium-metal anode and solid-electrolyte technology
- Signed a battery supply agreement with EV maker Mullen (2025)
- Raised a Series B round in December 2024

## Latest updates

- **2025-04** — Mullen and Enpower Greentech entered a partnership and supply agreement to build the SWIFT series of semi-solid-state batteries.
- **2024-12** — Closed a Series B funding round (~$27.5M reported).
- **2023-08** — Announced a major breakthrough in all-solid-state battery energy density, surpassing 400 Wh/kg.

## Links

- Website: https://www.enpower-greentech.com
- LinkedIn: https://www.linkedin.com/company/enpower-greentech-inc
- YouTube: https://www.youtube.com/@EnpowerGreentech

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Last updated: 2026-07-12