Direct Replacement Battery for the RB1290X2 & Compatible replacement with the CyberPower UPS models: CP1500PFCLCD, BRG1350AVRLCD, BRG1500AVRLCD, LX1500GU, CP1350AVRLCD, CP1500AVRLCD, CST150XLU.(for serial numbers beginning with CXX) Assembled & Tested in the USA: Each RB1290X2-UPC unit is proudly assembled, inspected, and tested in the United States for superior quality and peace of mind. High-Performance Battery Backup: This 12V maintenance-free sealed lead-acid battery pack provides reliable backup power with a suspended electrolyte system for maximum safety and performance. Pre-charged and ready for immediate use, ensuring minimal downtime. 18-Month Warranty & Reliable Power: Every UPC-branded RB1290X2-UPC Replacement Battery for CyberPower UPS Battery Backup systems includes a full 18-month warranty for lasting, dependable performance. For more than 15 years, UPC has become a trusted manufacturer of high quality UPS replacement battery cartridges. All products are “Assembled in the USA” allows Upgrade Parts Company to provide real value to our customers. UPC enhances its’ product offerings through a dedicated new product development process so we have the replacement battery cartridge you need at the time you need it. Our products are readily available in the US and Canada. The RB1290X2-UPC comes with an 18 month warranty.