Replacement Battery for CP RB1280X2A UPS Replacement Battery (2 pack) - Two 12V 8Ah Replacement Battery CyberPower RB1280X2A UPS Replacement Battery CyberPower RB1280X2A UPS Replacement Battery have one year warranty when used under normal conditions. Some equipments use more than one Battery. Voltage Matching: When more than 1 battery is ordered, we will send you the batteries that were manufactured in the same batch. Also, in our final inspection of the batteries, we take the extra step in voltage matching the batteries that you ordered. Voltage matching will not only ensure optimal performance, but it will extend the battery and equipment life Absorbent Glass Mat (AGM) technology creates superior performance. Charge voltages are marked on the battery for cyclic and float applications Please refer the operations manual for installation instructions for CyberPower RB1280X2A UPS Replacement Battery