Yuasa YUAM6220C YTX20CH-BS Battery 12 Volt, 18 amp-hour, 270 cold cranking amps, high performance maintenance-free battery Totally sealed and spill-proof - all acid is absorbed in special plates and absorbed glass mat separators No need to ever add water Advanced lead-calcium technology hold its specific gravity more than 3 times longer than conventional batteries Battery supplied dry with acid bottle Dimensions: 6" x 3.4375" x 6.375"