The RB1290X2 UPS Replacement Battery Cartridge restores life to CyberPower UPS systems that have weak or completely depleted internal batteries. The RB1290X2 contains one 12V/9AH battery, certified to meet or exceed original manufacturer specifications. This leak-proof, sealed lead-acid battery never requires replacement fluid. The pre-assembled cartridge installs easily into your CyberPower UPS system and is shipped with reusable packaging for delivering expired batteries to a suitable recycling center. The RB1290X2 comes with instructions, recycling information, and an eighteen-month warranty.UPS CompatibilityBRG1350AVRLCDBRG1500AVRLCDLX1500GUCP1350AVRLCDCP1500AVRLCDCST150XLUSealed Lead-Acid BatterySupplies 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.Reusable PackagingProvides for conveniently delivering expired batteries to a recycling center. After installing the new cartridge, place the old one in the reusable packaging.OEM CertifiedCyberPower 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. What's In The BoxBattery Kit and Installation Guide