REPLACEMENT BATTERY CARTRIDGE Main Features:Manufacturer: American Battery Company Manufacturer Part Number: RBC18Battery Type: Maintenance Free Lead-acid Hot-swappableBattery Life: 3Year(s) to 5Year(s)Dimensions: 5.81 Inches length x 1.25 Inches width x 3.6 Inches height2 maintenance-free sealed lead-acid batteriesWeight: 5.7 lb Replacement for APC UPS: PS250, PS250I, PS450, PS450I, SU5005, BAY450, SC250RM1U, SC450RM1UStandard Warranty: 2 Year(s) Limited