YUASA YTZ Maintenance Free Battery YTZ7S 12 Volt, 6 amp-hour, 130 cold cranking amps, high performance sealed maintenance-free battery Totally sealed and spill-proof - all acid is absorbed in special plates and absorbed glass mat separators Factory activated - filled, sealed and charged at the factory Advanced lead-calcium technology hold its specific gravity more than 3 times longer than conventional batteries No need to ever add water. 4 7/16 x 2 3/4 x 4 1/8 inches. 5 lbs.