The CyberPower RB12120X2B UPS replacement battery cartridge restores life to UPS systems with internal batteries that have become weak or completely depleted. The RB12120X2B 12V/12AH contains (2) two batteries, 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. The RB12120X2B comes with instructions, recycling information, and an eighteen-month warranty. UPS Compatibility PR1000LCD PR1000LCDTAA Features: Sealed Lead-Acid Battery: Supplies high surge currents, provides robust power-to-weight ratios, and is cost-effective. Maintenance-Free Battery Fluid: Never requires replacement. Leak-Proof Casing: Protects the sealed lead-acid battery and prolongs battery life. User-Installable Cartridge: Allows for quick and convenient installation; each cartridge is pre-assembled. Reusable Packaging: Provides for conveniently delivering expired batteries to a recycling center. After installing the new cartridge, place the old one in the reusable packaging. OEM Certified: CyberPower batteries meet or exceed original manufacturer specifications. Eighteen-Month Warranty: Covers defects in materials and workmanship in the product under normal use and conditions within eighteen months of the purchase date. See warranty for details.