Leopold König
Co-Founder and Managing Director @ Customcells Group
Hamburg, United States
Leopold König is a seed investor at Customcells Group in Hamburg focused on Battery and CleanTech. Leopold König is the Co-Founder and Managing Director at Customcells. He was a Research Fellow at Fraunhofer Institute for Silicon Technology.
- Total investments:
- 3
- Last investment:
- Lead investor:
- 0%
Last updated:
For AI agents: llms.txt
Industries Leopold König invests in
Stages Leopold König invests in
Countries Leopold König invests in
Round sizes
Round size
- Seed
- $3.5M–$5.7M
Investment Focus
Industry
- Battery 1 (33%)
- CleanTech 1 (33%)
- Recycling 1 (33%)
- Manufacturing 1 (33%)
- Sustainability 1 (33%)
Stage
- Seed 2 (67%)
- Series A 1 (33%)
Country
- Germany 1 (33%)
- Switzerland 1 (33%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
BTRY
|
BTRY is a spin-off of EMPA and ETH and is developing the industry's first energy-dense solid-state battery, using sophisticated semiconductor manufacturing technologies. | $5.7M / Seed / Nov 06, 2025 | |
Cylib
|
Cylib provides technology for recycling lithium-ion batteries into usable raw materials, turning battery waste and production scrap into materials like lithium, graphite, nickel, cobalt, and manganese for reuse in battery and industrial supply chains. Their proprietary process focuses on the holistic recovery of all battery components, utilizingwater-based methods to minimize chemical use and reduce environmental impact. Cylib operates an integrated end-to-end recycling workflow that includes discharge, material separation, and refinement for reintegration into manufacturing processes. The company’s approach supports circular material flows and aims to strengthen supply chains for battery producers and related industrial partners. | $59.9M / Series A / May 15, 2024 | |
|
Cylib
|
Cylib provides technology for recycling lithium-ion batteries into usable raw materials, turning battery waste and production scrap into materials like lithium, graphite, nickel, cobalt, and manganese for reuse in battery and industrial supply chains. Their proprietary process focuses on the holistic recovery of all battery components, utilizingwater-based methods to minimize chemical use and reduce environmental impact. Cylib operates an integrated end-to-end recycling workflow that includes discharge, material separation, and refinement for reintegration into manufacturing processes. The company’s approach supports circular material flows and aims to strengthen supply chains for battery producers and related industrial partners. | $3.5M / Seed / Oct 14, 2022 |
Co-Investors
About Customcells Group
Custom Cells - Energy storage can be optimized to chemical, battery and battery module level based on your requirements, so that large performance benefits are achieved. Our energy storage battery or intermediates are manufactured from prototype to series Zellbautechnologie unique and completely customized to the customer's application - thisis one of the outstanding uniqueness of custom Cells.Due to the close link with R & D and material suppliers Custom Cells may at any time access to the latest energy storage technologies. These technologies are used in the design of your products and generate a great value in comparison to standard solutions. Custom Cells produced in a qualified ISO 9001 production environment.
Customcells Group Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Dirk Abendroth
CEO
|
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|
Leopold König
Co-Founder and Managing Director
|
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Torge Thönnessen
Founder and CEO
|
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2 more contacts available
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FAQ
What does Leopold König invest in?
Leopold König invests primarily in Battery, CleanTech and Recycling startups, most often at Seed and Series A stage. Most of the 3 investments tracked by Shizune back companies in Germany. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What is Leopold König's check size?
Leopold König typically joins rounds of $3.5M–$5.7M at Seed. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Leopold König participates in.
When did Leopold König last invest?
The most recent investment recorded for Leopold König closed in Nov 2025. Shizune tracks 3 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.
Is Shizune's investor data accurate?
Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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