--- title: PORON EVExtend For EV/HEV Batteries | Marian, Inc. description: Our material supplier, Rogers Corp, offers PORON EVExtend® 4701-43RL polyurethane material, ideal for battery pads in EV/HEV li-ion pouch cell batteries. image: https://blog.marianinc.com/hubfs/poron%20ev%20extend%20post.jpg --- - [Facebook](https://www.facebook.com/marianincorporated) - [LinkedIn](http://www.linkedin.com/company/marian-inc.?trk=company_name) - [Twitter](http://twitter.com/Marianinc) - [Youtube](http://www.youtube.com/user/marianincsolutions) 1-800-773-0062 [Mandarin / 中文](https://www.marianinc.com.cn) [![Marian, Inc.](https://blog.marianinc.com/hs-fs/hubfs/Marian_November2019/Images/Marian%2c%20Inc..png?width=340&height=156&name=Marian%2c%20Inc..png "Marian, Inc.")](https://marianinc.com/) - [Capabilities](https://marianinc.com/capabilities/) - [Prototyping](https://marianinc.com/capabilities/prototyping/) - [Die Cutting](https://marianinc.com/capabilities/die-cutting/) - [Slitting](https://marianinc.com/capabilities/slitting/) - [Laser, Waterjet, Plotter Cutting](https://marianinc.com/capabilities/laser-and-waterjet-cutting/) - [Laminating](https://marianinc.com/capabilities/lamination/) - [Cleanroom Manufacturing](https://marianinc.com/cleanrooms/) - [Sputtering](https://marianinc.com/capabilities/sputtering/) - [Screen Printing](https://marianinc.com/capabilities/screen-printing/) - [Parts for Automated Assembly](https://marianinc.com/capabilities/assembly/) - [New Capability Development](https://marianinc.com/capabilities/new-capability-development/) - [Markets](https://marianinc.com/markets/) - [Automotive](https://marianinc.com/markets/automotive/) - [EV Battery](https://marianinc.com/battery-and-electric-vehicle/) - [Non-Automotive Battery](https://marianinc.com/non-automotive-battery/) - [Electronics](https://marianinc.com/markets/electronics/) - [Medical](https://marianinc.com/markets/medical/) - [Advanced Mobility](https://marianinc.com/advanced-mobility/) - [Data Centers & Servers](https://marianinc.com/data-centers/) - [LED Lighting](https://marianinc.com/markets/led/) - [Applications](https://marianinc.com/applications/) - [Bonding & Joining](https://marianinc.com/bonding-joining-assembly/) - [Gaskets & Seals](https://marianinc.com/gaskets-and-seals/) - [Thermal Management](https://marianinc.com/materials/thermal-management/) - [EMI Shielding & Grounding](https://marianinc.com/materials/emi-shielding/) - [Filtering & Venting](https://marianinc.com/materials/filters-venting-fabric/) - [Electrical Insulation](https://marianinc.com/electrical-insulation/) - [Surface Protection & Masking](https://marianinc.com/surface-protection-and-masking/) - [Vibration & Sound Damping](https://marianinc.com/vibration-sound-control/) - [Plastic Injection Molding](https://marianinc.com/plastic-injection-molding-value-add/) - [Materials](https://marianinc.com/materials/) - [Material Data Sheets](https://marianinc.com/data-sheets/) - [Tapes & Adhesives](https://marianinc.com/materials/tapes-adhesives/) - [Foams & Silicones](https://marianinc.com/materials/foams/) - [Thermal Management](https://marianinc.com/materials/thermal-management/) - [Filters, Mesh, & Vents](https://marianinc.com/materials/filters-venting-fabric/) - [EMI Shielding & Grounding](https://marianinc.com/materials/emi-shielding/) - [Rubber Sheets & Rolls](https://marianinc.com/materials/rubber-sheet-rolls/) - [Films & Plastics](https://marianinc.com/materials/plastic-films/) - [RTV Silicones](https://marianinc.com/materials/rtv-silicones/) - [About Us](https://marianinc.com/about-us/) - [FAQ](https://marianinc.com/marian-faq/) - [Our History](https://marianinc.com/about-us/history/) - [Our Culture](https://marianinc.com/about-us/our-culture/) - [Our Process](https://marianinc.com/about-us/our-process/) - [Quality & Certifications](https://marianinc.com/about-us/quality-and-certifications/) - [Sustainability](https://marianinc.com/about-us/environmental-sustainability/) - [Philanthropy](https://marianinc.com/about-us/philanthropy/) - [Supplier Partnerships](https://marianinc.com/about-us/partnerships/) - [News & Events](https://marianinc.com/about-us/news-events/) - [Careers](https://marianinc.com/about-us/careers/) - [Locations](https://marianinc.com/global-locations/) - [Global Locations](https://marianinc.com/global-locations/) - [North American Areas Served](https://marianinc.com/areas-served/) - [Resources](https://marianinc.com/resources/) - [Blog: Flexible Solutions](https://blog.marianinc.com/blog) - [Enclosure Institute™](https://marianinc.com/enclosure-institute/) - [Marian Brochures](https://marianinc.com/marian-brochures/) - [Solution Case Studies](https://marianinc.com/solution-center/) - [Technical eBooks](https://marianinc.com/technical-ebooks/) - [Webinar & Media Library](https://marianinc.com/webinar-media-library/) - [Durometer Comparison Chart](https://marianinc.com/durometer/) - [IP Rating & NEMA Rating Charts](https://marianinc.com/ip-rating-and-nema-rating-charts/) - [Roll Length Calculator](https://marianinc.com/roll-length-calculator/) - [Roll Diameter Calculator](https://marianinc.com/roll-diameter-calculator/) - [Material Data Sheets](https://marianinc.com/data-sheets/) - [Capabilities](https://marianinc.com/capabilities/) - [Prototyping](https://marianinc.com/capabilities/prototyping/) - [Die Cutting](https://marianinc.com/capabilities/die-cutting/) - [Slitting](https://marianinc.com/capabilities/slitting/) - [Laser, Waterjet, Plotter Cutting](https://marianinc.com/capabilities/laser-and-waterjet-cutting/) - [Laminating](https://marianinc.com/capabilities/lamination/) - [Cleanroom Manufacturing](https://marianinc.com/cleanrooms/) - [Sputtering](https://marianinc.com/capabilities/sputtering/) - [Screen Printing](https://marianinc.com/capabilities/screen-printing/) - [Parts for Automated Assembly](https://marianinc.com/capabilities/assembly/) - [New Capability Development](https://marianinc.com/capabilities/new-capability-development/) - [Markets](https://marianinc.com/markets/) - [Automotive](https://marianinc.com/markets/automotive/) - [EV Battery](https://marianinc.com/battery-and-electric-vehicle/) - [Non-Automotive Battery](https://marianinc.com/non-automotive-battery/) - [Electronics](https://marianinc.com/markets/electronics/) - [Medical](https://marianinc.com/markets/medical/) - [Advanced Mobility](https://marianinc.com/advanced-mobility/) - [Data Centers & Servers](https://marianinc.com/data-centers/) - [LED Lighting](https://marianinc.com/markets/led/) - [Applications](https://marianinc.com/applications/) - [Bonding & Joining](https://marianinc.com/bonding-joining-assembly/) - [Gaskets & Seals](https://marianinc.com/gaskets-and-seals/) - [Thermal Management](https://marianinc.com/materials/thermal-management/) - [EMI Shielding & Grounding](https://marianinc.com/materials/emi-shielding/) - [Filtering & Venting](https://marianinc.com/materials/filters-venting-fabric/) - [Electrical Insulation](https://marianinc.com/electrical-insulation/) - [Surface Protection & Masking](https://marianinc.com/surface-protection-and-masking/) - [Vibration & Sound Damping](https://marianinc.com/vibration-sound-control/) - [Plastic Injection Molding](https://marianinc.com/plastic-injection-molding-value-add/) - [Materials](https://marianinc.com/materials/) - [Material Data Sheets](https://marianinc.com/data-sheets/) - [Tapes & Adhesives](https://marianinc.com/materials/tapes-adhesives/) - [Foams & Silicones](https://marianinc.com/materials/foams/) - [Thermal Management](https://marianinc.com/materials/thermal-management/) - [Filters, Mesh, & Vents](https://marianinc.com/materials/filters-venting-fabric/) - [EMI Shielding & Grounding](https://marianinc.com/materials/emi-shielding/) - [Rubber Sheets & Rolls](https://marianinc.com/materials/rubber-sheet-rolls/) - [Films & Plastics](https://marianinc.com/materials/plastic-films/) - [RTV Silicones](https://marianinc.com/materials/rtv-silicones/) - [About Us](https://marianinc.com/about-us/) - [FAQ](https://marianinc.com/marian-faq/) - [Our History](https://marianinc.com/about-us/history/) - [Our Culture](https://marianinc.com/about-us/our-culture/) - [Our Process](https://marianinc.com/about-us/our-process/) - [Quality & Certifications](https://marianinc.com/about-us/quality-and-certifications/) - [Sustainability](https://marianinc.com/about-us/environmental-sustainability/) - [Philanthropy](https://marianinc.com/about-us/philanthropy/) - [Supplier Partnerships](https://marianinc.com/about-us/partnerships/) - [News & Events](https://marianinc.com/about-us/news-events/) - [Careers](https://marianinc.com/about-us/careers/) - [Locations](https://marianinc.com/global-locations/) - [Global Locations](https://marianinc.com/global-locations/) - [North American Areas Served](https://marianinc.com/areas-served/) - [Resources](https://marianinc.com/resources/) - [Blog: Flexible Solutions](https://blog.marianinc.com/blog) - [Enclosure Institute™](https://marianinc.com/enclosure-institute/) - [Marian Brochures](https://marianinc.com/marian-brochures/) - [Solution Case Studies](https://marianinc.com/solution-center/) - [Technical eBooks](https://marianinc.com/technical-ebooks/) - [Webinar & Media Library](https://marianinc.com/webinar-media-library/) - [Durometer Comparison Chart](https://marianinc.com/durometer/) - [IP Rating & NEMA Rating Charts](https://marianinc.com/ip-rating-and-nema-rating-charts/) - [Roll Length Calculator](https://marianinc.com/roll-length-calculator/) - [Roll Diameter Calculator](https://marianinc.com/roll-diameter-calculator/) - [Material Data Sheets](https://marianinc.com/data-sheets/) - [CONTACT US](https://info.marianinc.com/contact-us) - [REQUEST A PROTOTYPE](https://info.marianinc.com/request-a-prototype) - [REQUEST A QUOTE](https://info.marianinc.com/request-a-quote) Flexible Solutions # [PORON EVExtend® For Use In EV/HEV Li-ion Pouch Cell Batteries](https://blog.marianinc.com/blog/poron-evextend) Posted by [Katie Sullivan](https://blog.marianinc.com/blog/author/katie-sullivan) May 29, 2019 1:01 PM ## ![PORON EVExtend® Logo](https://blog.marianinc.com/hs-fs/hubfs/download.png?width=214&name=download.png)Materials for Battery Solutions - PORON EVExtend® One of our preferred material supplier, [Rogers Corporation](https://www.rogerscorp.com/), has released PORON EVExtend® polyurethane foam material. This material is ideal for battery pads for EV/HEV li-ion pouch cell batteries. The EXExtend 4701-43HBF offers an increased flammability rating of HBF, or HF1 (product dependent).  ### Die-Cut Battery Pads Battery pads are used inside an EV pouch cell battery pack. Whether the battery leverages a single pouch cell or several cells in a series, it is important to maintain a constant stack-up pressure on all cells even when they are in an expanded state. ![Battery Pad Stack-Up](https://blog.marianinc.com/hs-fs/hubfs/Stack.png?width=300&name=Stack.png)How is constant force maintained on a system that is in constant motion? The answer lies in the use of battery pads. Battery pads are typically soft, compressible materials that address changes in compression without becoming overly firm or soft during expansion or contraction, thereby maintaining a constant pressure on each pouch cell. This pressure can also be referred to as push-back force (or stack-up pressure), which optimizes battery life and performance. Continuous contraction and expansion cycles can cause significant changes in a material's push-back force. Foam pads are inserted between pouches and cells to maintain this push-back force. The pad must be firm enough to hold components in place, while compressible enough to withstand dimensional changes of the pouch cells over the life of the battery.   ### Advantages of PORON® EVExtend® for Battery Pad Applications - **Compression set -** A tight specification of 5% on compression set and additional long-term testing PORON EVExtend® proves to be highly resistant material that maintains its original thickness and properties throughout the life of the battery. - **Flat CFD curves** - PORON EVExtend® is engineered to have a flatter compression force deflection (CFD) curve, with performance that is firmer on the front end and softer on the back end. Because of this, PORON EVExtend® can maintain a constant pushback force, allowing designers to meet both beginning and end of life limits despite pouch expansion. - **Long-term performance and reliability** - Like all PORON® polyurethane materials, PORON EVExtend® provides exceptional and unrivaled long-term performance.  To learn more about PORON EVExtend® click the links below:  - [PORON EVExtend® Sell Sheet](https://marianinc.com/wp-content/uploads/2021/11/poron-evextend-sell-sheet.pdf) - [PORON EVExtend® Data Sheet](https://marianinc.com/wp-content/uploads/2021/12/poron-evextend-data-sheet.pdf) - [PORON EVExtend® 4701-43HBF Data Sheet](https://marianinc.com/wp-content/uploads/2020/07/Poron-evextend-4701-43hbf-data-sheet.pdf) - [Rogers Corp CFD Tool](http://tools.rogerscorp.com/ems/cfdcurve/index.aspx): Using stress-strain data to meet your engineering requirements. This tool provides a fast comparison of compression displacement data. ## Why Marian for Your Die-Cut Battery Pads & Other Die-Cut Foam EV / HEV Solutions?  **![Die-Cut Battery Pads](https://blog.marianinc.com/hs-fs/hubfs/Battery-Pads.jpg?width=200&name=Battery-Pads.jpg)**Marian is proud to be a long-time [**Rogers Corporation Preferred Converter**](https://marianinc.com/about-us/partnerships/rogers/). As one of the world's largest converters of [PORON® urethane foams,](https://marianinc.com/materials/poron-foams/) Marian's [capabilities](https://marianinc.com/capabilities/) include die-cutting, laminating, water jet cutting, slitting, and rapid prototyping. With Marian's innovative manufacturing techniques, PORON® urethanes can be die-cut into dynamic parts with intricate designs. Additional value can be added with extended liners, pull-tabs, and more, all while consistently maintaining tight dimensional tolerances.  [Check out the other solutions we offer to the EV Battery Market.](https://marianinc.com/battery-and-electric-vehicle/)   [![Contact Us](https://no-cache.hubspot.com/cta/default/330082/50af1808-237f-48fb-b2c2-c8b634fbef23.png)](https://cta-redirect.hubspot.com/cta/redirect/330082/50af1808-237f-48fb-b2c2-c8b634fbef23)   --- ### Related Resources     - [Blog post: 3 Questions Answered About Compression Set Resistance in Foams](https://blog.marianinc.com/blog/compression-set) - [Video: This test compares the Compression Set Resistance of 4 different foams](https://www.youtube.com/watch?v=VV1VpFmeVGQ&t=78s) - [Free Guide: What to Consider When Selecting Foam Material for Static Gaskets & Seals](https://info.marianinc.com/ebook-static-gaskets) [![eBook - Selecting Foam Materials for Static Sealing Gaskets](https://blog.marianinc.com/hs-fs/hubfs/ebook%20-%20selecting%20foam%20materials.jpg?width=248&height=348&name=ebook%20-%20selecting%20foam%20materials.jpg)](https://info.marianinc.com/ebook-static-gaskets)   Topics: [Foams](https://blog.marianinc.com/blog/topic/foams), [PORON](https://blog.marianinc.com/blog/topic/poron), [EV](https://blog.marianinc.com/blog/topic/ev), [HEV](https://blog.marianinc.com/blog/topic/hev), [Battery](https://blog.marianinc.com/blog/topic/battery), [Material selection](https://blog.marianinc.com/blog/topic/material-selection), [Thermal Gap Filler Pads](https://blog.marianinc.com/blog/topic/thermal-gap-filler-pads), [Thermal Gap Pad](https://blog.marianinc.com/blog/topic/thermal-gap-pad) This is a search field with an auto-suggest feature attached. - There are no suggestions because the search field is empty. ### Subscribe to Blog Updates ## Featured posts ### Posts by Topic - [3M (12)](https://blog.marianinc.com/blog/topic/3m) - [Acrylic Foam Tape (7)](https://blog.marianinc.com/blog/topic/acrylic-foam-tape) - [Application Story (10)](https://blog.marianinc.com/blog/topic/application-story) - [Assembly (14)](https://blog.marianinc.com/blog/topic/assembly) - [Automated Assembly (8)](https://blog.marianinc.com/blog/topic/automated-assembly) - [Automotive (3)](https://blog.marianinc.com/blog/topic/automotive) - [Avery Dennison (1)](https://blog.marianinc.com/blog/topic/avery-dennison) - [Battery (7)](https://blog.marianinc.com/blog/topic/battery) - [BISCO Silicone (27)](https://blog.marianinc.com/blog/topic/bisco-silicone) - [CFD (8)](https://blog.marianinc.com/blog/topic/cfd) - [Cleanroom (1)](https://blog.marianinc.com/blog/topic/cleanroom) - [Collapsible Gasket (1)](https://blog.marianinc.com/blog/topic/collapsible-gasket) - [Compression Set (5)](https://blog.marianinc.com/blog/topic/compression-set) - [Conductive Tapes (1)](https://blog.marianinc.com/blog/topic/conductive-tapes) - [Converting (11)](https://blog.marianinc.com/blog/topic/converting) - [Damping (2)](https://blog.marianinc.com/blog/topic/damping) - [Data Center (2)](https://blog.marianinc.com/blog/topic/data-center) - [Die Cutting (30)](https://blog.marianinc.com/blog/topic/die-cutting) - [Die-Cut Masking (2)](https://blog.marianinc.com/blog/topic/die-cut-masking) - [Displays (1)](https://blog.marianinc.com/blog/topic/displays) - [Elastomers (4)](https://blog.marianinc.com/blog/topic/elastomers) - [Electronics (7)](https://blog.marianinc.com/blog/topic/electronics) - [EMI Shielding (11)](https://blog.marianinc.com/blog/topic/emi-shielding) - [Enclosure Institute (18)](https://blog.marianinc.com/blog/topic/enclosure-institute) - [Enclosures (18)](https://blog.marianinc.com/blog/topic/enclosures) - [ePTFE (2)](https://blog.marianinc.com/blog/topic/eptfe) - [EV (8)](https://blog.marianinc.com/blog/topic/ev) - [FDA Registered (1)](https://blog.marianinc.com/blog/topic/fda-registered) - [Films (3)](https://blog.marianinc.com/blog/topic/films) - [Flame Barrier (2)](https://blog.marianinc.com/blog/topic/flame-barrier) - [Foams (50)](https://blog.marianinc.com/blog/topic/foams) - [Foil Tape (2)](https://blog.marianinc.com/blog/topic/foil-tape) - [Gasket (21)](https://blog.marianinc.com/blog/topic/gasket) - [Global Footprint (1)](https://blog.marianinc.com/blog/topic/global-footprint) - [Grounding (1)](https://blog.marianinc.com/blog/topic/grounding) - [HEV (5)](https://blog.marianinc.com/blog/topic/hev) - [Ingress Protection (5)](https://blog.marianinc.com/blog/topic/ingress-protection) - [Insulators (2)](https://blog.marianinc.com/blog/topic/insulators) - [IP Rating (8)](https://blog.marianinc.com/blog/topic/ip-rating) - [ITW Formex (1)](https://blog.marianinc.com/blog/topic/itw-formex) - [Kiss-Cut (2)](https://blog.marianinc.com/blog/topic/kiss-cut) - [Laser cutting (2)](https://blog.marianinc.com/blog/topic/laser-cutting) - [LED Lighting (8)](https://blog.marianinc.com/blog/topic/led-lighting) - [Manufacturing (22)](https://blog.marianinc.com/blog/topic/manufacturing) - [Masking (2)](https://blog.marianinc.com/blog/topic/masking) - [Material selection (32)](https://blog.marianinc.com/blog/topic/material-selection) - [Material Testing (1)](https://blog.marianinc.com/blog/topic/material-testing) - [Medical (4)](https://blog.marianinc.com/blog/topic/medical) - [Medical Device (9)](https://blog.marianinc.com/blog/topic/medical-device) - [Medical PSA (7)](https://blog.marianinc.com/blog/topic/medical-psa) - [Multi-Piece Gasket (1)](https://blog.marianinc.com/blog/topic/multi-piece-gasket) - [Peel Strength (1)](https://blog.marianinc.com/blog/topic/peel-strength) - [Polymer Science (2)](https://blog.marianinc.com/blog/topic/polymer-science) - [PORON (30)](https://blog.marianinc.com/blog/topic/poron) - [Prototype (2)](https://blog.marianinc.com/blog/topic/prototype) - [PSA (35)](https://blog.marianinc.com/blog/topic/psa) - [PTFE Membrane (3)](https://blog.marianinc.com/blog/topic/ptfe-membrane) - [Puzzle Gasket (1)](https://blog.marianinc.com/blog/topic/puzzle-gasket) - [Rogers Corporation (20)](https://blog.marianinc.com/blog/topic/rogers-corporation) - [Rotary (2)](https://blog.marianinc.com/blog/topic/rotary) - [Seals (18)](https://blog.marianinc.com/blog/topic/seals) - [Silicone (10)](https://blog.marianinc.com/blog/topic/silicone) - [Skin-Contact PSA (5)](https://blog.marianinc.com/blog/topic/skin-contact-psa) - [Summer Blog Series (5)](https://blog.marianinc.com/blog/topic/summer-blog-series) - [Surface Energy (3)](https://blog.marianinc.com/blog/topic/surface-energy) - [Surface Protection (4)](https://blog.marianinc.com/blog/topic/surface-protection) - [Sustainable Materials (4)](https://blog.marianinc.com/blog/topic/sustainable-materials) - [Tesa (2)](https://blog.marianinc.com/blog/topic/tesa) - [Thermal Gap Filler Pads (3)](https://blog.marianinc.com/blog/topic/thermal-gap-filler-pads) - [Thermal Gap Pad (3)](https://blog.marianinc.com/blog/topic/thermal-gap-pad) - [Thermal Management (21)](https://blog.marianinc.com/blog/topic/thermal-management) - [Thermal Pad (5)](https://blog.marianinc.com/blog/topic/thermal-pad) - [TIM (4)](https://blog.marianinc.com/blog/topic/tim) - [Tolerance (1)](https://blog.marianinc.com/blog/topic/tolerance) - [Vent Material (6)](https://blog.marianinc.com/blog/topic/vent-material) - [Webinar (1)](https://blog.marianinc.com/blog/topic/webinar) - [Wound Care Device (3)](https://blog.marianinc.com/blog/topic/wound-care-device) See all ### Recommended Downloads [![Free Marian technical eBooks](https://no-cache.hubspot.com/cta/default/330082/f9a444d6-9e74-45f3-ae00-5120c824ccc3.png)](https://cta-redirect.hubspot.com/cta/redirect/330082/f9a444d6-9e74-45f3-ae00-5120c824ccc3) - Connect - [Contact Us](https://info.marianinc.com/contact-us) - [Request a Quote](https://info.marianinc.com/request-a-quote) - [Request a Prototype](https://info.marianinc.com/request-a-prototype) - [Careers](https://marianinc.com/about-us/careers/) - [Global Locations](https://marianinc.com/global-locations/) - [North American Areas Served](https://marianinc.com/areas-served/) - [Frequently Asked Questions](https://marianinc.com/marian-faq/) - Legal - [Privacy Policy](https://marianinc.com/privacy-policy/) - [Cookie Policy](https://marianinc.com/cookie-policy/) - [Supply Chain Transparency](https://marianinc.com/supply-chain-transparency/) - [Do Not Sell or Share My Personal Information](https://app.termly.io/notify/9d347b81-5646-4c36-8e42-8562661a16d6) - [Limit the Use of My Sensitive Personal Information](https://app.termly.io/notify/9d347b81-5646-4c36-8e42-8562661a16d6) - [User Data Request Form](https://app.termly.io/dsar/9d347b81-5646-4c36-8e42-8562661a16d6) - Resources - [Material Data Sheets](https://marianinc.com/data-sheets/) - [Blog: Flexible Solutions](https://blog.marianinc.com/blog) - [Enclosure Institute](https://marianinc.com/enclosure-institute/) - [Marian Brochures](https://marianinc.com/marian-brochures/) - [Solution Case Studies](https://marianinc.com/solution-center/) - [Technical eBooks](https://marianinc.com/technical-ebooks/) - [Webinar and Media Library](https://marianinc.com/webinar-media-library/) - [Roll Calculator Tools](https://blog.marianinc.com/blog/how-to-use-roll-calculators) - [Durometer Comparison Chart](https://marianinc.com/durometer/) - [IP Rating and NEMA Rating Charts](https://marianinc.com/ip-rating-and-nema-rating-charts/) ### Latest Blog Posts [![Marian Certifications](https://no-cache.hubspot.com/cta/default/330082/1ebb4623-6c4b-4008-ab76-5494551577fa.png)](https://cta-redirect.hubspot.com/cta/redirect/330082/1ebb4623-6c4b-4008-ab76-5494551577fa) ```json { "@context" : "https://schema.org", "@type" : "BlogPosting", "author" : { "@type" : "Person", "name" : "Katie Sullivan", "url" : "https://blog.marianinc.com/blog/author/katie-sullivan" }, "dateModified" : "2026-02-25", "datePublished" : "2019-05-29", "description" : "Our material supplier, Rogers Corp, offers PORON EVExtend® 4701-43RL polyurethane material, ideal for battery pads in EV/HEV li-ion pouch cell batteries.", "headline" : "PORON EVExtend® For Use In EV/HEV Li-ion Pouch Cell Batteries", "image" : "https://330082.fs1.hubspotusercontent-na1.net/hubfs/330082/poron%20ev%20extend%20post.jpg", "mainEntityOfPage" : { "@id" : "https://blog.marianinc.com/blog/poron-evextend", "@type" : "WebPage" }, "publisher" : { "@type" : "Organization", "logo" : { "@type" : "ImageObject", "url" : "https://cdn2.hubspot.net/hubfs/330082/marian_logo_blue_on_trasnp_bgrnd_2018-01-2.png" }, "name" : "Marian Inc." } } ```