OneAC ON1000XAU-CN, ON1000XIU-SN 12V 4.5Ah UPS Battery - This is an AJC Brand Replacement This is an AJC Brand&#174; Replacement for a ONEAC ON1000XAU-CN 12V 4.5Ah UPS Battery Voltage: 12V (12 Volts) Capacity: 4.5Ah Terminals: F1 Number of Batteries Required for a Full Replacement 4