LeydenJar
Agent41 out of 100, Above median. Agent Readiness. Open the scores section.Agent Readiness: 41/100. Above median. Measured by StartupHub.ai. Median 41.Trust84 out of 100, Top 25%. Data Trust. Open the scores section.Data Trust: 84/100. Top 25%. Measured by StartupHub.ai. Median 61.Develops 100% pure silicon anodes for lithium-ion batteries, increasing energy density and reducing carbon footprint.
About
LeydenJar is a Dutch deep-tech company that pioneers 100% pure silicon anodes for lithium-ion batteries. Their proprietary technology significantly increases energy density, enables faster charging, and dramatically lowers the carbon footprint of battery production. Founded in 2016 as a spin-off from TNO, LeydenJar is headquartered in Leiden with operations in Eindhoven.
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Key facts
- Website
- leyden-jar.com
- Headquarters
- Leiden, Netherlands
- Founded
- 2016
- Employees
- 87
- Total funding
- $56M (Series A)
- Business model
- B2B
Funding rounds
| Date | Round | Amount | Lead investors |
|---|---|---|---|
| 28 Jan 2026 | Series A | $9M | APG |
| 10 Sept 2025 | Series A | $25M | Energy Transition Partners, Catalyco, Extantia, Invest-NL |
| 1 Oct 2021 | Undisclosed round | $20M | Catalyco, LIOF, Invest-NL |
| 1 Jan 2020 | Undisclosed round | $2M |
Tech stack
Detected on leyden-jar.com, last scanned 29 Oct 2026. Run your own scan
- Frontend
- jQuery
- Analytics
- Google Analytics 4
- SEO
- Yoast SEO
- Support
- HubSpot
- CMS / Builders
- WordPress
- Hosting
- Vultr
- Email provider
- Microsoft 365
- Hiring platform
- Recruitee
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Frequently asked
Is LeydenJar trustworthy and reputable?
StartupHub's Data Trust & Reputation score for LeydenJar is 84 out of 100, a trusted rating, based on site security posture, privacy practices, malware and phishing checks, and public reputation signals.
How much funding has LeydenJar raised?
LeydenJar has raised a total of $56M in funding. The most recent round on record is Series A.
How many employees does LeydenJar have?
LeydenJar has approximately 87 people on record.
SEC filings, insider activity, nonprofit links and pay benchmarks for LeydenJar:
Company details: from public sources. Funding: no announced round on file. Ownership: not yet claimed by the company. Scores: measured by named tools; each links to its method. Our rules
