APC Smart-UPS RT is a family of high-density, performance UPSs for voice & data networks, medical labs, & light industrial applications. 6U form factor allows standardization across multiple applications. High power internal chargers allow virtually unlimited additional matching battery packs to comply with aggressive runtime demands of business-critical systems. Customers with harsh power environments looking for extremely tight voltage & frequency regulation, internal bypass, & input power factor correction typical of double conversion online topology will get them in the Smart-UPS RT.