Celgard battery separators are polypropylene and/or polyethylene electrolytic membranes which offer excellent product uniformity, strength, chemical stability and energy performance in high performance battery applications.

Proprietary Celgard trilayer membranes are a leading industry standard in rechargeable lithium battery applications. They are typically used in electronic applications such as notebook computers, cellular telephones, digital cameras and other high performance devices.

Celgard is the global leader in supplying battery separators for disposable lithium batteries used in photographic equipment, medical devices, and various military applications.

Other energy storage technologies, which use Celgard battery separators, include vented nickel-cadmium aircraft batteries, zinc-air hearing aid batteries, and super capacitors.