Verified Nov 2026
Batteries & E-Mobility
·
Milwaukee, Wisconsin
·
Since 1965
Maxwell Technologies is an energy storage and power delivery manufacturer headquartered in Milwaukee, Wisconsin, United States, founded in 1965. The company employs 200 to 500 people and reports revenue in the $77.5M band. It is publicly listed under the ticker MXWL and serves automotive, electric vehicle, electronics, appliance, medical, and military-defense industries. In late 2025, Clarios acquired Maxwell Technologies to expand its supercapacitor capabilities, and Maxwell's ultracapacitor technology has been reported in coverage of data center backup power applications.
Maxwell Technologies at a glance
Revenue
77.5M
Employees
200-500
Founded
1965
Headquarters
Milwaukee, Wisconsin
Ownership
Publicly traded (NASDAQ: MXWL)
Certifications
ISO 9001
Import activity
307
Industries
Automotive
Electric Vehicles
Electronics
Appliance
Medical
Military & Defense
Sourcing and import activity
From US customs bill-of-lading records
US sea imports
307
Named foreign suppliers
33
Top origins
Japan · Hong Kong S.A.R. · China · Sri Lanka
Shared foreign counterparties do not establish that these companies buy from Maxwell Technologies.
What this tells a buyer
Maxwell Technologies was acquired by Clarios, with the transaction reported in late 2025, and the company's ultracapacitor products are now described in coverage of data center use cases.
Maxwell Technologies holds ISO 9001 certification and produces battery, electronics, and LED-related products, with a primary capability in batteries and e-mobility.
Maxwell Technologies is a publicly listed company (MXWL) with a 1965 founding date, serving a range of automotive, electronics, and defense sectors.
Source: US customs bill-of-lading records and public filings · Last verified Nov 05, 2026
STABILITY SIGNALS
Established & strong
61 years in operation (founded 1965).
Publicly listed; no distress event on record.
Holds ISO 9001 certification(s) per public sources.
Overview
Maxwell Technologies is an energy storage and power delivery manufacturer headquartered in Milwaukee, Wisconsin, United States, founded in 1965. The company employs 200 to 500 people and reports revenue in the $77.5M band. It is publicly listed under the ticker MXWL and serves automotive, electric vehicle, electronics, appliance, medical, and military-defense industries. In late 2025, Clarios acquired Maxwell Technologies to expand its supercapacitor capabilities, and Maxwell's ultracapacitor technology has been reported in coverage of data center backup power applications.
At a glance
Attribute | Detail |
|---|---|
Founded | 1965 |
Headquarters | Milwaukee, Wisconsin |
Employees | 200-500 |
Revenue | 77.5M |
Ownership | Publicly traded (NASDAQ: MXWL) |
Primary capability | Batteries & E-Mobility |
Certifications | ISO 9001 |
What Maxwell Technologies makes
Maxwell Technologies holds ISO 9001 certification and produces battery, electronics, and LED-related products, with a primary capability in batteries and e-mobility.
Products and capabilities described on the company's own site include LED, Electronics, Battery, Chassis (source: maxwell.com).
Certifications
Maxwell Technologies is associated with the following certifications in public sources. Confirm the certified scope for the specific plant producing your part:
ISO 9001 — maxwell.com
Trade and customs footprint
Maxwell Technologies was acquired by Clarios, with the transaction reported in late 2025, and the company's ultracapacitor products are now described in coverage of data center use cases. US customs bill-of-lading records list 307 inbound shipments across 33 foreign suppliers, with top origins including Japan · Hong Kong S.A.R. · China · Sri Lanka.
Latest developments
2026-06-18 — Maxwell: supercapacitors for data centers post acquisition | IDTechEx Research Article (idtechex.com)
2025-12-17 — Maxwell Technologies - About Us (maxwell.com)
2025-12-02 — Clarios acquires Maxwell Technologies to expand supercapacitor capabilities - EV Engineering & Infrastructure (evengineeringonline.com)
2025-11-20 — Clarios and Maxwell, Fullmark ITC transfer, OATI, Colville Tribes - Energy-Storage.News (energy-storage.news)
2025-11-12 — Clarios Acquires Maxwell Technologies Extending Commitment to New Low Voltage Energy Storage Opportunities | Clarios (clarios.com)
2025-11-12 — [Gen-AI Analysis] Clarios acquires Maxwell Technologies to boost supercapacitor supply - MarkLines Automotive Information & Gen-AI Platform (marklines.com)
Company details
Maxwell Technologies is a publicly listed company (MXWL) with a 1965 founding date, serving a range of automotive, electronics, and defense sectors. Maxwell Technologies was founded in 1965, has an estimated 200-500 employees, and is headquartered in Milwaukee, Wisconsin. On the LightSource stability read it is rated "Established & strong": 61 years in operation (founded 1965). Publicly listed; no distress event on record. Holds ISO 9001 certification(s) per public sources.
Frequently asked questions
What does Maxwell Technologies make?
Maxwell Technologies is an energy storage and power delivery manufacturer headquartered in Milwaukee, Wisconsin, United States, founded in 1965. The company employs 200 to 500 people and reports revenue in the $77.5M band. It is publicly listed under the ticker MXWL and serves automotive, electric vehicle, electronics, appliance, medical, and military-defense industries. In late 2025, Clarios acquired Maxwell Technologies to expand its supercapacitor capabilities, and Maxwell's ultracapacitor technology has been reported in coverage of data center backup power applications.
Where is Maxwell Technologies headquartered?
Maxwell Technologies is headquartered in Milwaukee, Wisconsin (5757 North Green Bay Avenue, Milwaukee, Wisconsin, 53209).
When was Maxwell Technologies founded?
Maxwell Technologies was founded in 1965.
How big is Maxwell Technologies?
Maxwell Technologies has an estimated 200-500 employees, with revenue in the 77.5M range.
Is Maxwell Technologies publicly traded?
Publicly traded (NASDAQ: MXWL). Public financial figures are drawn from its filings.
What certifications does Maxwell Technologies hold?
Maxwell Technologies lists ISO 9001 on its website. Confirm the certified scope for the specific plant producing your part.
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Last verified Nov 2026. Is this your company? Request a correction.
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