A versatile UPS developed for the harshest power conditions in the world. APC Smart-UPS RT SURT8000XLI belongs to a family of high-density, performance UPSs for voice and data networks, medical labs, and light industrial applications. Capable of supporting 8kVA in a 6U rack/tower convertible form, users can support power hungry blade servers or heavily loaded equipment racks. This flexible 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 and frequency regulation, internal bypass, and input power factor correction typical of double conversion online topology will get them in this Smart-UPS RT.