Cyberpower'S Rb0690X2 Ups Replacement Battery Cartridge Restores Life To Ups Systems With Internal Batteries That Have Become Weak Or Completely Depleted. The Rb0690X2 6V/9Ah (Qty - 2) 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 Into Your Cyberpower Ups System. Each Cyberpower Replacement Battery Cartridge Ships With Reusable Packaging That Can Be Used For Delivery Of Expired Batteries To A Suitable Recycling Center.