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CyberPower''s RB1290X10 UPS replacement battery cartridge restores life to UPS systems with internal batteries that have become weak or completely depleted. The RB1290X10 12V/9AH 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. Each CyberPower replacement battery cartridge ships with reusable packaging that can be used for delivery of expired batteries to a suitable recycling center. All CyberPower batteries come with an 18-month warranty. Battery quantity: 10 Battery size: 12V/9AH Pre-assembled & Maintenance-free Certified OEM replacement for CyberPower UPS 18-month warranty