Yuasa (YUAM62TZ5) YTZ5S Factory Activated Battery 12 Volt, 3.5 Amp-hour, 65 Cold Cranking Amps, 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