Fundraising Fox

Adden

Waltham, US · Founded 2021 · 4 known investors

Adden Energy develops solid-state, dynamically-stable batteries based on self-healing separator technology discovered at Harvard, aimed at fast charging, long lifetime, and non-flammable components. The batteries target electric vehicles, automakers, and other applications including drones, data centers, and robotics.

CleantechDeep TechEnergy

Founders & leadership

WFWilliam Fitzhugh
William FitzhughinNamed on SEC filing
LYLuhan Ye
Luhan YeinNamed on SEC filing
XLXin Li
Xin LiinNamed on SEC filing

Board

BLBernard Lupien
Bernard LupieninBoard directorGeneral Partner at Rhapsody Venture Partners
FHFred Hu
Fred HuinBoard director
LMLaurie Menoud
Laurie Menoudin𝕏Board directorInvestor at At One Ventures

Investors · 4

At One VenturesMenlo Park · $100K – $5M
MassVenturesWaltham · $250K – $500K
Rhapsody Venture PartnersCambridge · $500K – $2M
Primavera Venture Management LimitedreportedBeijing

Reported raises · per SEC filings

Form D private placements
▶$15MraisedSep 2024 · 4 investors · Other Energy
Rule 506(b)
Officers, directors & promoters on the filing
  • Bernard LupienDirector
  • William FitzhughExecutive Officer, Director
  • Luhan YeExecutive Officer, Director
  • Fred HuDirector
  • Xin LiExecutive Officer, Director
  • Laurie MenoudDirector
Offering amount
$15M
Amount sold
$15M
First sale
Aug 2024
Incorporated
Corporation, Delaware, 2021
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$5.1MraisedFeb 2022 · 3 investors · Other Energy
Rule 506(b)
Officers, directors & promoters on the filing
  • Xin LiExecutive Officer, Director
  • William FitzhughExecutive Officer, Director
  • Bernard LupienDirector
  • Fred HuDirector
Offering amount
$5.1M
Amount sold
$5.1M
First sale
Feb 2022
Incorporated
Corporation, Delaware, 2021
Federal exemptions
06b
Full filing on SEC EDGAR ↗

Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.

In the news

Funding and M&A Roundup: Adden Energy Secures $15 Million in Series A Funding - Mercom Capital Groupmercomcapital.com · Oct 2024Harvard spinout Adden Energy raised $15M to make its solid state batteriesaxios.com · Oct 2024Adden Energy Raises $15M to Expand Accessibility of Electric Vehiclesbusinesswire.com · Oct 2024Adden Energy Raises $15M in Series Afinsmes.com · Oct 2024EV battery startup Adden Energy raises USD5.15 million in seed round funding - Automotive Technology Insight | Forecasts | Industry News | Supply Chainautotechinsight.spglobal.com · Sep 2022Adden Energy Secures $5.5 Million in Seed Funding - Mercom Capital Groupmercomcapital.com · Sep 2022Fast charging over 10,000 cycles: For future electric vehicles, Harvard engineers’ solid-state battery technology points to a leap in performance and reliabilityseas.harvard.edu · Sep 2022

Frequently asked questions

What does Adden do?
Adden Energy develops solid-state, dynamically-stable batteries based on self-healing separator technology discovered at Harvard, aimed at fast charging, long lifetime, and non-flammable components. The batteries target electric vehicles, automakers, and other applications including drones, data centers, and robotics.
Who are Adden's investors?
Adden's investors include At One Ventures, MassVentures, Rhapsody Venture Partners, Primavera Venture Management Limited.
Where is Adden headquartered?
Adden is headquartered in Waltham, US.