Ultima AGM Battery 1-143 for XL models 2004, OEM# 65958-04 Patented post design reduces internal battery resistance by replacing 3 internal connections with 1. Flush mount, threaded terminals allow for easy connection to bike terminals. Nonspillable, sealed AGM Valve Regulated Lead Acid (VRLA) design is maintenance free and meets all requirements for shipment via air carrier. Rugged construction has been lab tested and field tested to ensure long life, even in demanding V-Twin applications. Higher AH capacity than OEM means more starting capacity before wearing battery down, particulararly useful for those stubborn steeds. Manufactured by an ISO 9001:2000 registered factory Patented Cast-On-Stip (COS) manufacturing technology ensures consistent long battery life.