From a more than 100,000-square-foot North American facility, IOXUS manufactures ultracapacitor cells and modules for high-power energy storage applications. The company is unusual in handling the full production chain in-house, from electrode manufacturing through cell and module assembly, with additional manufacturing in Asia and a focus on transportation, industrial and grid-connected systems. IOXUS was acquired by Scottie Johnson and XS Power Batteries in 2020, and its manufacturing processes are ISO 9001:2015 certified.
ISO 9001:2015
UL Listed
UL
Quality certification
East Penn Manufacturing CompanyEast Penn Manufacturing is a private, family-owned maker of lead-acid batteries and related power products, operating the world’s largest single-site lead battery manufacturing facility. Its vertically integrated Pennsylvania operation includes battery production, tooling, plastic molding and recycling, while Lancaster Mold—acquired in 2021 after two decades as an East Penn supplier—supports in-house battery-case molding and cover assembly. The company’s quality and environmental systems are certified to ISO 9001, ISO 14001 and IATF 16949 standards.UPPER LEACOCK TOWNSHIP, PA
Stryten EnergyStryten Energy LLC manufactures energy-storage batteries and battery components at a network of U.S. facilities, with its headquarters in Alpharetta, Georgia. Its Salina, Kansas, plant has produced batteries for 50 years, and the company reports more than a century of industry expertise. Its technologies support applications from vehicles and material handling to backup power and grid storage.BRIDGEVILLE, PA
ION Storage Systems, IncFounded by experts from national laboratories, defense, energy, and manufacturing, Beltsville-based ION Storage Systems develops solid-state batteries built around a patented 3D ceramic architecture. Its Cornerstone cells, designed for scalable production, have been shipped to consumer-electronics manufacturers and achieved customer qualification, making ION the first U.S. solid-state battery technology company to reach that milestone. The company’s anodeless platform is designed to avoid swelling and external compression while supporting applications from compact electronics to electric vehicles.BELTSVILLE, MD
Stored Energy Systems (SENS)Founded in 1971 by battery-industry veteran Herb Kaewert, Stored Energy Systems (SENS) designs and manufactures DC power and engine-starting systems for mission-critical infrastructure. The Colorado-based company now makes its equipment in U.S. facilities spanning more than 130,000 square feet, using worst-case design and factory testing for applications where downtime is not an option. SENS has maintained ISO 9001 certification since 1996 and says its systems support more than 75% of North American critical-power gensets above 500 kW.334519HATFIELD, PA