East Penn Manufacturing Company

East Penn Manufacturing Company

Manufactures lead-acid batteries and energy storage

Overview

East Penn Manufacturing makes and sells batteries, mainly lead-acid energy storage for automotive, industrial, and specialty uses under the Deka brand. Lead-acid cells store chemical energy and deliver electrical power in battery packs for vehicles and industrial equipment, produced at the world’s largest single-site lead-acid facility. The company stays private and family-owned, differentiating itself with a long-running culture that emphasizes recycling, workforce and community values, and reinvestment, while offering a broad product range. Its goal is to provide reliable energy storage solutions and steadily expand capacity and applications in the energy storage market.

About East Penn Manufacturing Company

Simplify's Rating
Why East Penn Manufacturing Company is rated
C+
Rated B on Competitive Edge
Rated B on Growth Potential
Rated D+ on Differentiation

Industries

Automotive & Transportation

Industrial & Manufacturing

Energy

Company Size

N/A

Company Stage

N/A

Total Funding

N/A

Headquarters

Lyons, Illinois

Founded

1946

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Simplify's Take

What believers are saying

  • East Penn ranks second in North America for motive power batteries and accelerates lithium-ion expansion to support electrification
  • New 930,000-square-foot facility completed January 2025 consolidates operations and employs over 600 workers nationwide
  • Leading in large-format lithium tech via Navitas Systems while developing advanced batteries for military, undersea, and space applications

What critics are saying

  • Federal conviction for systematic overtime violations exposed East Penn to $22.25M back wages and likely further DOL litigation within 6 months
  • OSHA heat and PPE safety violation in 2025 signals ongoing operational risk in high-temperature lead-battery production with medium impact
  • Non-lead competitors like lithium-ion and gel tech threaten East Penn's core lead-acid dominance as clients shift to higher-efficiency alternatives

What makes East Penn Manufacturing Company unique

  • East Penn remains the world's largest single-site lead-acid battery manufacturer without ever going IPO or acquired
  • Family-owned for over 75 years, East Penn reinvests heavily while maintaining a consistent employee-focused culture since founding
  • Deka brand uniquely combines lead, gel, and lithium technologies tailored for motive power with UL-listed approval across truck classes

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Benefits

Health Insurance

Dental Insurance

Vision Insurance

Paid Holidays

Paid Vacation

401(k) Company Match

Profit Sharing

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