Potting & encapsulation compounds for lithium-ion battery Packs

Our lithium-ion battery potting materials protect from moisture and chemical exposure while guarding against damage from mechanical and temperature shock. Lightweight lithium batteries are ideal power sources for smaller consumer products exposed to environmental stresses.

We design, formulate, and manufacture polyurethane and epoxy resin potting and encapsulating compounds for lithium-ion (Li-Ion) battery packs. Our products can overcome and work to avoid thermal runaway propagation. Where applicable, we will help you choose the right compound for mitigating thermal runaway in your lithium-ion battery. We partner with our customers, managing issues with thermal conductivity, thermal cycling, thermal shock chambers, and extremely high and low temperatures.

Polyurethane & Epoxy Resin Li-Ion Battery Products

Finding a potting compound to satisfy the needs of all lithium-ion applications can seem impossible. Our in-house formulators create potting and encapsulating compounds to nearly any specification your lithium-ion battery needs for optimized performance.

We can adapt one of our many existing formulations or create a potting compound specific to your product.

Popular Li-Ion Battery Potting Compounds:

  • Epic S7475 is a two-component polyurethane compound
  • Designed for potting electronic control modules (ECM's) and a wide variety of electronic devices with an operating range of -50°C to 130C°C
  • Low mixed viscosity allows the material to flow into intricate areas under printed circuit boards and other tight-tolerance areas
  • 4:1 by volume mix ratio allows the system to be very adaptable for meter mix and dispense processing
  • Very low hardness in combination with the low Tg provides excellent flexibility, allowing delicate surface-mounted devices (SMDs) to expand and contract during thermal cycling and thermal shock
  • Has shown extremely low weight loss at 130°C, for applications that generate a great deal of heat
  • UL 94-V0 recognized at 4.8 mm
  • RoHS compliant
  • Epic S7527 is a UL 94 V-0 recognized polyurethane potting compound
  • UL 94 V-0 flame rating
  • RTI rating of 150°C per UL 746
  • Designed for use in equipment conforming to UL 8750, the standard for LED equipment for use in lighting products
  • Low mixed viscosity for superior flow into tight tolerance areas
  • Excellent thermal and electrical properties
  • Low weight loss at elevated temperatures
  • Outstanding adhesion to various metal and plastic substrates
  • RoHS compliant
  • Excellent moisture resistance
Viscosity: 3,000 – 4,000 cps @ 25°C, 20 RPM
Hardness: 88 – 92 Shore A @ 25°C
  • Epic S7571 is a 2-component polyurethane potting compound
  • Developed for the lithium-ion battery market
  • Very low Tg of <-60°C
  • 80 Shore A flexibility
  • Designed to pass UL 94 V-0 at ¼"
  • Good thermal conductivity of 0.6-0.7 W/mk, a lower density than most other UL 94 V-0 systems
  • Reduced density decreases the weight of the finished product while maintaining thermal conductivity
  • Epic S7591 is a two component epoxy that is designed for high temperature applications
  • Low thermal expansion rate coupled with a high glass transition temperature
  • Designed to provide an extremely high 3 W/mK thermal conductivity for rapid removal of heat generated by electrical/electronic components
  • Convenient 1:1 volumetric mix ratio

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Advantages of Polyurethane Potting for Li-Ion Batteries:

  • High resilience for compression set properties
  • Electrical insulating properties
  • Forms strong bonds to a wide range of substrates
  • Formulations available for a wide range of processing parameters

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