The CyberPower RB1270X4G UPS Replacement battery cartridge restores life to UPS systems with internal batteries that have become weak or completely depleted; It comes with four 12V/7Ah lead-acid batteries SEALED LEAD-ACID BATTERIES: Supplies high surge currents, provides robust power-to-weight ratios, and cost effective; MAINTENANCE-FREE BATTERY FLUID: Never requires replacement USER-INSTALLABLE CARTRIDGE: Allows for quick and convenient installations; each cartridge is pre-assembled; The RB1270X4G comes in reusable packaging for delivering expired batteries to recycling centers Compatible with the CyberPower model: OR1500PFCRT2U 18-MONTH WARRANTY: Covers defects in materials and workmanship in the product under normal use and conditions within eighteen months of the purchase date