Microporous
Volta MemberVFPiney Flats, TN, United States
About
Microporous makes battery separators: rubber and polyethylene separators for lead-acid batteries, and coated polyethylene separators for lithium-ion cells in EVs and energy storage.
Its lead-acid separators, sold under names such as CellForce and DuroForce, serve automotive, industrial and backup power batteries. Microporous traces its separator business back more than 90 years and is based in Piney Flats, Tennessee, with a second plant in Feistritz, Austria. Piney Flats began producing ultra-thin coated PE separators for lithium-ion batteries in 2025, and a third plant for them is planned in Danville, Virginia, with more than 2,000 jobs.
Listed In
From the Battery Report
Battery Report 2025 · chapterSupply Chain: Upstream and MidstreamVolta Foundation's annual report on this part of the battery industry.Supply Chain Segments
Battery Chemistries
Lead-acid✓
Location Info
- HQ
- Piney Flats, TN, United States
North America (2)
- Manufacturing
- Berry Hill, Tennessee, United States
- Manufacturing
- Danville, Virginia, United States
Europe (1)
- Manufacturing
- Feistritz, Austria
Sources
Chemistry: Lead-acid
- Homepage - Microporous · Company site · checked Oct 2026“About Lead-Acid Battery Separators”
Quick Facts
- Founded
- 1934
- Team Size
- 51-200
- Funding
- Federal
- Last Updated
- Oct 14, 2026
