The Global Lead-acid Battery AGM Separators Market was valued at USD 1,498 Million in 2025 and is projected to reach USD 1,910 Million by 2034, growing at a Compound Annual Growth Rate (CAGR) of 3.7% during the forecast period (2024–2030). This sustained growth is fueled by the rising adoption of start-stop technology in automobiles, expanding demand for reliable Uninterruptible Power Supply (UPS) systems, and the critical role of AGM batteries in renewable energy storage applications.

As the backbone of Valve-Regulated Lead-Acid (VRLA) batteries, the AGM separator is a sophisticated component essential for safety, performance, and longevity. In this evolving landscape, a select group of material science leaders is driving innovation and setting industry standards. This blog profiles the Top 10 Companies in the Lead-acid Battery AGM Separators Industry—a blend of global titans and specialized manufacturers shaping the future of energy storage.

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🔟 1. Hollingsworth & Vose

Headquarters: East Walpole, Massachusetts, USA
Key Offering: Advanced glass microfiber separators for automotive, industrial, and specialty batteries

Hollingsworth & Vose (H&V) is a preeminent global supplier of high-performance materials, including a comprehensive portfolio of AGM separators. The company leverages deep expertise in glass microfiber technology to produce separators that offer superior electrolyte absorption, high porosity, and excellent mechanical strength. H&V serves major battery manufacturers worldwide, providing critical components for demanding applications such as start-stop vehicles and premium backup power systems.

Innovation Initiatives:

• Continuous R&D in fiber blend optimization for enhanced battery cycle life

• Development of specialty separators for extreme temperature and high-vibration environments

• Focus on sustainability through material efficiency and recycling compatibility

Download FREE Sample Report: Lead-acid Battery AGM Separators Market – View in Detailed Research Report

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9️⃣ 2. ENTEK

Headquarters: Lebanon, Oregon, USA
Key Offering: Extruded polyethylene and AGM separators for lead-acid batteries

ENTEK is a world-leading manufacturer of battery separators with a strong focus on innovation and quality. While renowned for its polyethylene separators, the company is also a significant player in the AGM separator market. ENTEK’s AGM products are engineered to deliver reliable performance, ensuring optimal acid saturation and plate separation for long-lasting, maintenance-free batteries used in automotive and industrial sectors.

Innovation Initiatives:

• Investment in advanced manufacturing processes for consistent separator quality

• Strategic partnerships with global battery OEMs to develop custom solutions

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8️⃣ 3. Bernard Dumas (Hokuetsu Corporation)

Headquarters: Tokyo, Japan
Key Offering: High-performance AGM separators for automotive and industrial batteries

As part of Japan’s Hokuetsu Corporation, Bernard Dumas is a key supplier of AGM separators, particularly strong in the Asian market. The company is known for its technological precision and high-quality standards, catering to the demanding requirements of Japanese and global automotive battery manufacturers. Their separators are critical for batteries powering start-stop systems and advanced automotive electrical systems.

Innovation Initiatives:

• Focus on developing separators with ultra-fine glass fibers for improved performance

• Expansion of production capacity to meet growing regional demand

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7️⃣ 4. Lydall, Inc. (Now part of Unifrax)

Headquarters: Manchester, Connecticut, USA
Key Offering: Specialty engineered materials, including AGM separators

Lydall was a major force in the specialty materials industry, with a portfolio that included advanced AGM separators. Following its acquisition by Unifrax to form Alkegen, the combined entity possesses enhanced capabilities in high-temperature insulation and filtration materials, with a strong position in the battery separator segment. Their AGM products are designed for reliability in critical power applications.

Innovation Initiatives:

• Integration of material science expertise from the Unifrax and Lydall merger

• Development of next-generation materials for energy storage and filtration

Download FREE Sample Report: Lead-acid Battery AGM Separators Market – View in Detailed Research Report

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6️⃣ 5. Yingkou Zhongjie Shida Separator

Headquarters: Yingkou, Liaoning, China
Key Offering: Cost-competitive AGM separators for the domestic and Asian markets

Yingkou Zhongjie Shida Separator is one of China’s leading producers of AGM separators, benefiting from the country’s position as the world’s largest manufacturer of lead-acid batteries. The company supplies a significant portion of the domestic market, providing essential components for automotive, motorcycle, and energy storage batteries. Its growth is closely tied to the expansion of China’s automotive and industrial sectors.

Innovation Initiatives:

• Scaling production to meet massive domestic demand

• Improving product quality to compete in international markets

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5️⃣ 6. Chongqing Zaisheng Technology

Headquarters: Chongqing, China
Key Offering: AGM separators for various lead-acid battery applications

Chongqing Zaisheng Technology is a prominent Chinese manufacturer specializing in the research, development, and production of battery separator materials. The company has established itself as a key supplier within China’s vast battery ecosystem, catering to applications ranging from e-bikes and motorcycles to automotive and backup power systems. Its strategic location in a major industrial hub provides logistical advantages.

Innovation Initiatives:

• Focus on R&D to enhance separator durability and performance

• Expansion strategies to capture growing market share in Southeast Asia

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4️⃣ 7. Microporous, LLC

Headquarters: Pulaski, Tennessee, USA
Key Offering: Microporous polyethylene and AGM separators

Microporous is a significant North American manufacturer of battery separators with a long history in the industry. The company produces a range of separator products, including AGM mats that are essential for VRLA batteries. Microporous serves a diverse customer base, including manufacturers of automotive, motive power, and stationary batteries, emphasizing product consistency and technical support.

Innovation Initiatives:

• Investment in manufacturing technology to improve product quality and efficiency

• Commitment to serving the specific needs of the North American battery market

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3️⃣ 8. Jiangsu Changhai Composite Materials

Headquarters: Yancheng, Jiangsu, China
Key Offering: Composite materials and AGM separators for batteries

Jiangsu Changhai Composite Materials is a key player in China’s material science sector, with a product line that includes AGM separators for the lead-acid battery industry. The company leverages its expertise in composite materials to produce separators that meet the performance requirements of modern battery applications. It is an important supplier within China’s dense manufacturing network for batteries and related components.

Innovation Initiatives:

• Development of cost-effective separator solutions for mass-market applications

• Strengthening supply chain integration with battery manufacturers

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2️⃣ 9. Ahlstrom-Munksjö (Now part of Ahlstrom)

Headquarters: Helsinki, Finland
Key Offering: Fiber-based materials, including filtration media and specialty papers

Ahlstrom, following the integration of Munksjö, is a global leader in fiber-based solutions. While its focus is broad, the company’s deep knowledge of advanced nonwovens and filtration media positions it with relevant expertise for the AGM separator market. The company’s material science capabilities can be applied to develop high-performance separators for specialized battery applications, particularly in the European market.

Innovation Initiatives:

• Application of fiber technology expertise to energy storage materials

• Focus on sustainable and recyclable material solutions

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1️⃣ 10. Alkegen

Headquarters: Indianapolis, Indiana, USA
Key Offering: High-performance specialty materials, including battery separator technologies

Alkegen, created from the combination of Unifrax and Lydall, is a powerhouse in specialty materials. The company’s extensive portfolio includes solutions for thermal management, filtration, and battery technologies. With the legacy expertise of Lydall in engineered materials, Alkegen is well-positioned to be a significant innovator and supplier in the AGM separator space, offering advanced materials for next-generation energy storage applications.

Innovation Initiatives:

• Leveraging combined R&D resources to pioneer new material technologies

• Focus on creating materials that enhance battery safety, efficiency, and lifespan

Get Full Report Here: Lead-acid Battery AGM Separators Market – View in Detailed Research Report

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🔋 Outlook: The Future of AGM Separators Is Smarter and More Resilient

The lead-acid battery AGM separator market is navigating a period of strategic evolution. While the core technology is mature, the industry is investing in advanced material science and process innovations to enhance performance and secure its place against competing chemistries.

📈 Key Trends Shaping the Market:

• Accelerated demand from the automotive start-stop segment, driven by global emission regulations

• Technological refinement of separator materials, including mixed-fiber and composite formulations

• Growing importance of reliable backup power for data centers and 5G infrastructure

• Strategic focus on cost-optimization and supply chain resilience, particularly in Asia

Get Full Report Here: Lead-acid Battery AGM Separators Market – View in Detailed Research Report

The companies profiled above are not just supplying a component—they are enabling the reliability of essential power systems across the globe, from our vehicles to our critical infrastructure.