APC Smart-UPS Ultra On-Line Lithium-ion XBP 180V 2U Rack/Tower This product is part of the Smart-UPS battery systems, providing extended runtime to SRTL 5KVA mission critical applications. This extendable-run battery pack provides extended runtime during prolonged power outages. Embedded BMS monitoring at the cell, module, and cabinet level provides data of battery SOC and health. Ideal for Smart-UPS on-line mission critical applications. Number of rack unit 2U Battery type Li-Ion (Lithium-Ion) Provided equipment- Rack mounting brackets, Vertical mounting brackets Number of battery free slots 0 Number of battery filled slots 0 Battery voltage 180 V Number of battery replacement quantity 2 Product certifications UL 1973 Ambient air temperature for operation 0…40 °C Operating altitude 0...10000 ft Relative humidity 0…95 % non-condensing Ambient air temperature for storage -15…45 °C Storage altitude 0.00…15240.00 m Storage Relative Humidity 0…95 % non-condensing Mounting mode- Rack-mounted with kit, Tower mounted with kit