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With commercial sales into the lithium battery market beginning in the early 1980's, Celgard has a long history of supplying separators for portable power applications. 

Today, Celgard® separators are widely used in rechargeable lithium-ion batteries for personal electronics devices such as notebook computers, mobile telephones, and digital cameras. And because of their unique characteristics and reliable performance, Celgard® separators are quickly being adopted into emerging high-performance applications such as electric drive vehicles, power tools, and reserve power and electricity grid management systems.

In addition, we are a leading global supplier of battery separators for disposable lithium batteries, and our membranes are also used in a variety of specialty energy storage applications, including vented nickel-cadmium aircraft batteries, zinc-air hearing aid batteries, and ultracapacitors.

Regardless of the energy storage application, the Celgard product portfolio offers the best solution for quality, reliability, and performance.