EnerSys
EnerSys (NYSE: ENS) is a world leader in stored energy solutions for industrial applications, designing, manufacturing, and distributing energy systems, motive power batteries, specialty batteries, battery chargers, power equipment, and outdoor equipment enclosure solutions to customers worldwide. The company operates… From the company’s description.
Margins and return on equity change in ; everything else in percent. Fewer shares and less debt are shown plainly, not as bad news — it depends what you make of buybacks. Dotted labels explain each measure. is shown separately from the annual figures.
What EnerSys does
In the company’s own words
EnerSys (NYSE: ENS) is a world leader in stored energy solutions for industrial applications, designing, manufacturing, and distributing energy systems, motive power batteries, specialty batteries, battery chargers, power equipment, and outdoor equipment enclosure solutions to customers worldwide. The company operates through four primary business segments: Energy Systems, which provides uninterruptible power systems for telecommunications, broadband, data centers, and utilities; Motive Power, which supplies batteries and chargers for electric forklifts, automated guided vehicles, and material handling equipment; Specialty, which serves aerospace, defense, transportation, and medical markets with premium batteries and portable power solutions; and New Ventures, which offers energy storage and management systems for demand charge reduction, utility backup power, and electric vehicle fast charging.
Founded over 125 years ago through predecessor companies, EnerSys was incorporated in 2000 and completed its initial public offering in 2004. The company has grown through strategic acquisitions, including the 2002 acquisition of Invensys's Energy Storage Group and the 2024 acquisition of Bren-Tronics Defense LLC for $206.4 million, which strengthened its specialty segment with portable lithium battery and charging solutions for military applications. The company maintains manufacturing and assembly facilities across the Americas, EMEA, and Asia regions, serving over 10,000 customers in more than 100 countries through company-owned sales and service facilities and independent representatives.
As of March 31, 2026, EnerSys employed approximately 9,682 people, with roughly 31 percent covered by collective bargaining agreements. The company's competitive advantages include its proprietary thin plate pure lead technology, extensive global manufacturing footprint, and established relationships with major original equipment manufacturers and end users. Primary raw materials include lead, lithium, nickel, cobalt, plastics, steel, and copper, with raw material costs representing over half of cost of goods sold. EnerSys maintains ISO 9001 certification across all manufacturing locations and holds additional certifications including ISO 14001 for environmental management and specialized certifications for aerospace, medical, rail, and automotive applications. The company's website is http://www.enersys.com.
Company details
- Sector
- Industrials
- Industry (SIC)
- Electronic Equipment
- Headquarters
- READING, PA
- Fiscal year end
- March
- CIK
- 1289308
- SIC
- 3690
Financial performance, year by year
Fiscal 2014–2026 · USDThe full income statement, balance sheet and cash flow for each of these years — every figure traceable to its filing — is on the Financials tab with a free account.
Who owns EnerSys — and what changed
Funds as of 2026Q2 · superinvestors as of 2026-06-30
Largest fund holders · EnerSys’s weight in each
Fund ownership is a floor, not a census — pensions, insurers and people holding shares directly are not visible here.
EnerSys’s bonds, as funds hold them
Funds report holding 2 issues of EnerSys’s debt, $119.62M at market value — what funds hold, not the company’s total debt. Weighted-average coupon 5.56%, maturing 2027 to 2032.
Fund ownership counts N-PORT filers only, so it is a floor rather than a census — pensions, insurers and direct holders are not visible here, and the remainder is not “held by individuals”.
Every fund and institutional holder, quarter by quarter, is on the Ownership tab with a free account.
Recent filings
All filings →Each filing opens into its own statements and disclosures here.
Put this business in context.
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