The Vertiv Liebert APS 15kVA Scalable to 20kVA N+1 is an advanced online double conversion UPS designed for mission - critical applications. With a full - load runtime of 15 minutes, this UPS ensures continuous power supply during outages. It features hot - swappable FlexPower modules for scalable runtime and capacity upgrades, allowing users to adapt to changing power needs. The user - replaceable modular batteries and power components help reduce maintenance costs, while the 0.9 output power factor provides more usable power for critical loads. The factory - installed Intellislot Unity Card and three total intellislot ports enable free remote management and support for environmental sensors, ensuring optimal performance and monitoring. This UPS is suitable for both rack and tower configurations, making it versatile for various environments.