Celgard, LLC (Celgard), a subsidiary of Polypore International, LP, (Polypore) is pleased to announce it has entered into a strategic alliance agreement with American Battery Factory (ABF). Celgard and ABF will undertake joint research projects to commercialize state-of-the-art next generation products for reliable high-technology prismatic lithium iron phosphate (LFP) batteries in the U.S. Under the terms of the agreement, Celgard will supply 100% of ABF's separator needs for LFP battery cells