Input Phase Single-Phase UPS Input Cord Length (ft.) 1 Battery Type Valve Regulated Lead Acid (VRLA) DC System Voltage (VDC) 180 Replacement Battery Cartridge 744-A1974 Battery Replacement Description Hot-swappable, user replaceable batteries. EBM requires 2 Replacement Battery Cartridges. UPS Connection UPS specific DC connector Primary Form Factor Rackmount; Tower Rack Height 3U External Battery Pack Form Factor Rack/Tower Installation Form Factors Supported with Included Accessories 4 post 19 inch rackmount Installation Form Factors Supported with Optional Accessories 2 post rackmount ( RK2PC ) Minimum Required Rack Depth (inches) 29 Operating Temperature Range 32° to 104°F (0° to 40°C) Relative Humidity 0-95% non-condensing