Wondering if Duralast Battery at Autozone is inflating it's specs. Motocraft BXT-96R-500 at Ford dealer is rated at 500 cold cranking amps. The Duralast Gold Battery 96R-DLG Group Size 96R 590 CCA is listed as 590 cold cranking amps. Weighs 30.34 lbs. The Motocraft weighs 32 lbs, cost $129. Duralast costs $159.99. An old hand told me to disregard warranties and other claims and buy the one that weighs the most for the same application.