<ul><li>Cascading capabilities</li><li>Compact and lightweight</li><li>Hot-swap batteries</li><li>Quick plug-in connections</li><li>User-replaceable batteries</li></ul> APC Smart-UPS RT is a family of high-density, performance UPSs for voice and data networks, medical labs, and light industrial applications. 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 the Smart-UPS RT.<br /><br /><p> </p>