Enersys enersys group is the world's largest provider of battery for battery manufacturing industry, with more than and 100 years of experience and leading technology, headquartered in Redding, Pennsylvania, Switzerland and Singapore respectively with headquarters in Europe and asia. Enersys group has production, sales and service network perfect in the world, with more than and 30 manufacturing and assembly plants in more than and 100 countries around the world for more than more than 10 thousand industries provide industrial storage solutions for the design, manufacture, installation and maintenance services.