Theion: Funding, Investors & Team (Sep 2026)
Theion manufactures crystal batteries that find application in automobiles, aircraft, and wireless devices. The batteries' chemical composition and production methods are specifically engineered to ensure safety by eliminating flammability risks. Additionally, these batteries are suitable for use in smartphones and computers.
Theion has raised $16.4M across 2 funding rounds on record, the most recent a Series A of $16.4M announced in Mar 2025.
That round is above the $6.0M median round size for Science and Engineering companies tracked on FundedIQ over the last two years.
Theion Company Profile and Key Stats
Latest funding round on record: Mar 2025.
Theion Funding Rounds
1 of 2 rounds was announced without a disclosed amount and is excluded from the total.
Theion announced an undisclosed round in Sep 2023; the amount was not disclosed.
1.5 years later, a Series A of $16.4M was announced in Mar 2025.
Theion Founders and Leadership Team
Contact details for the Theion team: 1 of 1 has an email address on file.
Start 14-day free trial →Theion Funding Compared to Other Science and Engineering Startups
Theion's latest round of $16.4M is above the median round in Science and Engineering. Medians cover the last 24 months of disclosed rounds.
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Theion Funding FAQs
What does Theion do?
Theion manufactures crystal batteries that find application in automobiles, aircraft, and wireless devices. The batteries' chemical composition and production methods are specifically engineered to ensure safety by eliminating flammability risks. Additionally, these batteries are suitable for use in smartphones and computers.
How much funding has Theion raised?
Theion has raised $16.4M across 2 rounds on record. The most recent is a Series A of $16.4M announced in Mar 2025.
When did Theion last raise funding?
Theion's most recent funding round on record is a Series A of $16.4M, announced in Mar 2025.
Who founded Theion?
FundedIQ lists Marek Slavik (Founder) at Theion.
Where is Theion headquartered?
Theion is based in Berlin, Germany.
How many employees does Theion have?
Theion is in the 11-50 employee band.
How does Theion's funding compare to other Science and Engineering startups?
Theion's latest round of $16.4M is above the $6.0M median round size for Science and Engineering companies on FundedIQ across 232 tracked companies over the last two years.
About FundedIQ's Theion Funding Data
FundedIQ tracks announced funding rounds and refreshes this profile every week. Round dates, stages and amounts are normalised to a single format, converted to US dollars, and de-duplicated: two records of the same round announced days apart are merged, and two genuinely different rounds are kept apart on the amounts they disclose. Amounts shown are the disclosed figures only — a round announced without a number is listed and excluded from the total rather than estimated.
Employee counts are reported bands, not exact headcounts. Founder and executive names carry the job title on record. Anything we do not hold for Theion is left off this page rather than filled in.
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