Input Phase Single-Phase UPS Input Cord Length (ft.) 1 attery Type Valve Regulated Lead Acid (VRLA) DC System Voltage (VDC) 180 Internal UPS Replacement Battery Cartridge EBP-1805 Battery Replacement Description Hot-swappable, user replaceable batteries. EBM requires 2 Replacement Battery Cartridges. Battery Management ABM+ technology 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 )