Yuasa Ytz4V Factory Activated AGM Battery This premium generation of maintenance-free motorcycle batteries, hailing from the world's leading manufacturer, boasts over half a century of engineering excellence, ensuring longevity and reliable service. Featuring Absorbed Glass Mat (Agm) Separators, this advanced technology negates the need for water addition, paired with innovative lead-calcium technology that preserves its specific gravity more than threefold compared to conventional lead antimony batteries. Ideal for extended standby use, such as winter storage, these batteries offer unparalleled convenience, embodying the pinnacle of install it and forget it solutions for motorcycle enthusiasts. Features: Packs more power, discharges less in storage and has a longer life than conventional batteries Spill-proof design and construction have passed vibration and pressure differential spill-proof tests Acid is absorbed in special plates and AGM separators 1 year manufacturer warranty Acid included Factory activated Made in the USA Note: Product may vary from photo. Charge and test all batteries prior to installation.