CyberPower's RB1270X2 UPS replacement battery cartridge restores life to UPS systems with internal batteries that have become weak or completely depleted. The RB1270X2 12V/7AH (qty - 2) batteries are certified to meet or exceed original manufacturer specifications. All replacement cartridges come with leak proof sealed lead acid batteries that are pre-assembled for easy installation into your CyberPower UPS system. Each CyberPower replacement battery cartridge ships with reusable packaging that can be used for delivery of expired batteries to a suitable recycling center. Compatible with CP900AVR UPS.Compatibility Note: The RB1270X2 is not compatible with CP900AVR UPS sold before January 2009.