Ultra RCD-UPS2000D 12V 8Ah UPS Battery - This is an AJC Brand Replacement This is an AJC Brand&#174; Replacement for a Ultra RCD-UPS2000D 12V 8Ah UPS Battery Voltage: 12V (12 Volts) Capacity: 8Ah Terminals: F2 Number of Batteries Required for a Full Replacement: 2