Replaces: RBC51, Battery Cartridge #51 Compatible models: AVR550U, AVR650UM, AVR700U, AVR700UXRM, AVR750U, AVR750UTAA, AVR900U, AVRT450U Dimension: 5.95' L x 3.72' W x 2.56' H Weight: 6 LB Maintenance Free Sealed Lead-Acid Battery (leak proof) 18 Month Warranty Ships from the United States (USA) - Powerwarehouse is a USA based company