Optima Batteries 8071-167-FFP D51 YellowTop Dual Purpose Battery 12-Volt, 450 cold cranking Ampere, size: 9-5/16" x 5-1/16" x 8-15/16" tall, weight: 26 pounds, SAE post Reserve capacity of 66 minutes for constant performance Optimal starting power even in bad weather Fifteen times more resistant to vibration for durability