The CyberPower RB1290X16 the OR-1290 battery replacement. The CyberPower RB1290X16 Replacement Battery Kit consists of sixteen (16) 12v 9ah sealed lead acid battery which matches the RB1290X16 OEM battery specifications. These are not general purpose 12V 9AH batteries sold by most battery retailers, this kit is comprised of 12V 9AH AGM HR series SLAs that are tested using Midtronics equipment in order to guarantee that OEM specifications are met and surpassed.