High Quality UPS Batteries, High Rate Discharge RBC29 Design, Performance Guaranteed, 32 degree Fahrenheit Min Operating Temperature, 104 degree Fahrenheit Max Operating Temperature, 0 - 95% Humidity Range Operating system, Ready-to-install RBC29-BD1 battery kit conforming to APC-specifications The brand new replacement battery set for your APC RBC29 includes 1 battery - SP12-5.5HR (12 Volts 5.5 AH). You must use the existing cables and hardware to connect your UPS batteries.