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LeydenJar Technologies

Defence · Leiden, Netherlands · Founded 2016

Ultra-thin pure-silicon anodes enabling batteries with much greater energy density, faster charging, and lower CO₂ output MoreLess

LeydenJar is a cutting-edge startup operating in the energy sector, specifically focusing on the development of high-energy density anodes for batteries. The company's primary goal is to create batteries that are not only smaller and lighter but also have fast charging capabilities. This innovative approach to battery technology has the potential to revolutionize various industries, including consumer electronics and mobility.

The company's target market includes manufacturers of phones, laptops, and electric vehicles, among others. By offering batteries with increased capacity and reduced weight, LeydenJar aims to enhance the performance and efficiency of these devices. For instance, their batteries could enable longer flight times for drones and further driving distances for electric vehicles, all while reducing CO2 emissions.

LeydenJar operates on a B2B business model, partnering with manufacturers to integrate their advanced battery technology into various products. The company generates revenue by selling their high-energy density anodes to these manufacturers.

The startup is also actively seeking talented individuals to join their team. They offer a dynamic work environment where employees have the opportunity to contribute directly to the future of energy technology. The company's rapid growth and ambitious goals make it an exciting place for innovative minds looking to disrupt the market.

Keywords: Battery Technology, High-Energy Density Anodes, Consumer Electronics, Mobility, Fast Charging, Reduced CO2 Emissions, Smaller and Lighter Batteries, Increased Battery Capacity, B2B Business Model, Market Disruption.

Company overview

LeydenJar Technologies company information

The essential company record, classifications and operating signals in one place.

Status
Operational
Founded
2016
Headquarters
Leiden, Netherlands
Employees
86
Open positions
2
Dealroom signal
78.9
client focusb2btechnologyHardwaretechnologyDeep TechtechnologyNanotechsub industryEnergy Efficiencysub industryEnergy Storagesub industryVehicle ProductionsectorAutomotivebusiness modelManufacturingsectorLithium-Ion BatteriessectorBatterysectorDefence ApplicationssectorSpinoutsectorSustainable Development Goals

Valuation & funding

LeydenJar Technologies funding history

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
LATE VCEquity / VC Jan 2026 $8.6M $321M APG
LATE VCEquity / VC Sep 2025 $14M $321M Invest-NL · Extantia Capital
PROJECT, REAL ESTATE, INFRASTRUCTURE FINANCEOther financing Dec 2022 $33M European Investment Bank
SERIES AEquity / VC Sep 2021 $24M $97M Yard Energy · Invest-NL · Somerset Capital Partners · BOM - Brabant Regional Development Agency
EARLY VCEquity / VC Jul 2019 $0 PVS Investments
GRANTOther financing Feb 2018 Netherlands Ministry of Economic Affairs and Climate Policy
SEEDEquity / VC Feb 2018 BOM - Brabant Regional Development Agency · UNIIQ
GRANTOther financing Feb 2018 Undisclosed
SEEDEquity / VC Sep 2017 Netherlands Ministry of Economic Affairs and Climate Policy
GRANTOther financing Sep 2017 European Innovation Council
Showing 10 recorded eventsUnlock the complete deal history →

Financials

Workforce over time

Available workforce history. Financial fields without reported data are omitted.

YearEmployees
2026 91
2025 82
2024 96
2023 90
2022 61
2021 23
2020 13
Company filings, research estimates and Dealroom dataOpen the full financial model →

Growth signals

LeydenJar Technologies website traffic

Latest recorded traffic for LeydenJar Technologies is 4.4K monthly website visits, up 7.3% over the last three months. LeydenJar Technologies's team grew 4.9% over the past year.

Latest monthly visits4.4K 3-month web change+7.3% 1-year team growth+4.9%
Monthly website visits80 observations · Nov 2019–Jul 2026
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Comparisons

LeydenJar Technologies compared with similar companies

Dealroom’s weighted taxonomy model identifies the closest operating peers. Company identity and context stay open; selected comparison metrics preview what is available in the platform.

Showing 8 of the closest matchesCompare every metric →

Talent graph

LeydenJar Technologies's talent

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Team profiled 16 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 5 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Investors

19 investors on LeydenJar Technologies's cap table

Sourced from Dealroom's funding and investor records.

Seed 5 investors entered at this stage
European Commission
Netherlands Ministry of Economic Affairs and Climate Policy
European Innovation Council
BOM - Brabant Regional Development Agency
UNIIQ
Series A 6 investors entered at this stage
PVS Investments
Yard Energy
Invest-NL
Somerset Capital Partners
Catalus Capital
DOEN Participaties
Series B+ 2 investors entered at this stage
Extantia Capital
APG
Other known 6 additional known investors
European Investment Bank
TNO - Netherlands Organisation for Applied Scientific Research
InnovationQuarter Capital
Move Energy
Pjotr van Schothorst
Pjotr van Schothorst

Global footprint

Where LeydenJar Technologies has talent and traffic

Workforce by country
5 countries with
team presence
🇳🇱 Netherlands89.5%
🇬🇧 United Kingdom5.3%
🇺🇸 United States2.6%
🇧🇪 Belgium1.3%
🇩🇪 Germany1.3%
5 countries shown

In the news

Latest news about LeydenJar Technologies

Recent press, funding announcements, and product moves mentioning LeydenJar Technologies — open to read from the original sources.

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Market sentiment

What the market is saying about LeydenJar Technologies

An AI-synthesized read of the highest-engagement posts about LeydenJar Technologies on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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