Yuasa Ytx20-Bs AGM Battery Yuasa AGM Batteries is an absorbed-glass mat battery that eliminates the need to ever add water, and permits the battery to be totally sealed and spill proof once it is filled with acid. The acid is absorbed in special plates and AGM separators. With the advanced lead-calcium technology, these batteries hold their specific gravity more than 3x longer than conventional lead antimony batteries. Features: Special absorbed-glass mat battery eliminates water loss, permitting the battery to be permanently sealed once it is filled with acid The Maintenance Free Battery Dimensions: 6 7/8 long, 3 7/16 wide, 6 1/8 high 270 CCA (Cold Cranking Amps) Acid pack included 1 year manufacturer warranty Battery Terminal Location: Note: Product may vary from photo. We recommend charging and testing all batteries prior to using.