Doug has been involved in the Critical Power engineering, sales and service industry for 17 years. For the past 13 years he has specifically focused on UPS and UPS Battery applications for all types of critical power needs. Since 2003, Doug has been a key player in the market development of the Deka Unigy VRLA battery (2- and 12-volt) for the UPS marketplace. He has been instrumental in applying and specifying battery product to a diverse market base including OEMs, the financial industry, chip fabrication facilities, and many large co-location data center providers across the globe. East Penn Manufacturing , located in Lyon Station, Pennsylvania, is the world's largest privately held single-site lead acid battery manufacturing facility.