Optima Batteries 8051-160-FFP D31A YellowTop Dual Purpose Battery 12-Volt, 900 cold cranking Ampere, size: 12-13/16" x 6-1/2" x 9-3/8" tall, weight: 59.8 pounds, steel stud and SAE post Reserve capacity of 155 minutes for constant performance Optimal starting power even in bad weather Fifteen times more resistant to vibration for durability