Daramic separators for deep cycle applications focus on the effect of antimony inside a lead acid battery. Daramic’s line of deep cycle separators reduce waterloss, reduce maintence, and increase abuse tolerance in traction and golf car batteries.


The profile design plays an important part in the spacing of components in lead-acid batteries. As its name suggests, the separator acts as a barrier between the positive and negative electrode. The spacing in between the two components is guided by the profile design. Daramic offers many profile combinations that can meet most any battery design requirement need.


In support of the chemical reaction that takes place inside of a lead-acid battery, the material formulation of the separator provides key benefits and can be adjusted depending upon the battery application. Properties adjusted through the formula include permeability, porosity, pore size distribution, electrical resistance, antimony suppression, ionic conductivity, and chemical compatibility within the electrolyte.

Lamination (Optional)

A key failure mode of some battery types is active material shedding. Laminates, which can be attached through adhesion are typically a glass material fiber available in various thicknesses which act as a support in maintaining active material on the electrode. Additional benefits of lamination include acid mixing and mechanical stability.


Daramic’s production flexibility allows delivery of a finished product that aligns with customer manufacturing needs. Separators can be provided in the following forms (with or without laminated material):

  • Jumbo Roll
  • Slit Roll – state- of-the art slitters deliver uniform width control
  • Cut Piece –cut to requested width and length using quality controlled choppers for repeatable, consistent results
  • Envelop or sleeve – mechanically sealed, which allows easier insertion of the electrode

Deep Cycle

Daramic® HD™

Daramic HD is a polyethylene battery separator specifically designed to minimize water loss due to antimony poisoning in lead acid batteries used in heavy duty deep cycle applications such as traction, stationary and golf car batteries.

Daramic® HD Plus™

Daramic® HD Plus™ builds upon the success of the Daramic HD product line with an improved formulation designed to further reduce water loss, reduce maintenance, and increase abuse tolerance in heavy duty deep cycle applications such as golf car, renewables , floor machine, and traction vehicles.

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