Intelligent lithium based batteries
Sonnen has raised €68M across 4 funding rounds from 5 investors, most recently a Series D+ round in Feb 2018. Based in Wildpoldsried, Germany; founded 2010; active in Cleantech and Energy. Data as of 8 Aug 2026.
Timing: dormant vs cohort gap · momentum up. Funding-only estimates, not predictions and not investment advice — see signals.
| Date | Stage | Amount | Investors |
|---|
| 2018-02-01 | Series D+ | €60M | — | View deal → |
| 2016-06-01 | Growth/Late | €0 | GE Ventures | View deal → |
| 2015-09-01 | Growth/Late | €0 | Inven Capital | View deal → |
| 2014-12-01 | Series C | €7.5M | Capital Invest,Chrysalix SET,Munich Venture Partners | View deal → |
