Eaton 9px Extended Battery 72v 9ah. 9PXEBM72RT2U, 2.2 kW, 3 kW Power Rating, 2200 VA, 3000 VA Rating, 72V Output Voltage, Rack Mount, Tower Mounting Type The Eaton 9PXEBM72RT2U 9PX Series of UPS systems are designed to deliver first-class energy-efficient power protection for data centres, IT, Networking and Infrastructure. With energy star qualification the 9PX can operate at the highest efficiency levels and still reduce energy and cooling costs.