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High Power Devices

ENTEK EPH is specially formulated for high rate of discharge/recharge applications used in secondary lithium batteries powering portable electronic devices such as cordless power tools, lawn and garden equipment, high powered RC vehicles, and unmanned aerial systems.

Electric Drive VehiclesElectric Bus

Also called high power applications, these lithium batteries require high power discharge on demand. Vehicles include light automobiles, electric buses, electric motorcycles and electric bikes (e-bikes).

Nominal Porosity


Available Thicknesses

9µm, 12µm, 16µm

Typical Characteristics

These are typical characteristics for the EPH line. ENTEK routinely customizes separators based upon customer requirements.

Thickness (average) 16 µm
Basis Weight 8.1 g/m2
Porosity 48%
Air Permeability 125 sec
Tensile Strength MD > 900 kg/cm2
TD - 700 kg/cm2
Tensile Elongation at BreakMD - 81%
TD - 284%
Puncture Resistance 375 g
Thermal Shrinkage @ 120 C, 1 hr. MD - 9.0%
TD - 3.5%

This data sheet only shows typical properties. We urge purchasers to conduct tests to determine final suitability for their specific end uses. No statement with respect to use is intended as a positive recommendation for such use, no guarantee of performance expressed or implied is made.

Nominal Thickness12 µm
Basis Weight6.2 g/m2
Nominal Porosity48%
Air Permeability95 sec / 100 ml
Puncture Resistance315g
Tensile StrengthMD ≥ 1000 kg/cm2
TD ≥ 800
Tensile ElongationMD - 68%
TD - 289%
Thermal Shrinkage @120C, 1hr.MD - 7.5%
TD - 2.0%

Nominal Thickness9 µm
Basis Weight4.6 g/m2
Nominal Porosity48%
Air Permeability75 sec / 100 ml
Puncture Resistance255g
Tensile StrengthMD ≥ 1100 kg/cm2
TD ≥ 800 kg/cm2
Tensile ElongationMD - 68%
TD - 249%
Thermal Shrinkage @120C, 1hr.MD - 9.5%
TD - 4.0%