With their rugged construction and advanced AGM (Absorbed Glass Mat) design, Power-Tec batteries are guaranteed to provide superior power and maintenance-free use. These batteries are environmentally friendly, spill-proof, and engineered to withstand the damaging effects of shock and vibration. The highly porous microfiber separators trap electrolyte, improving service life and off-season storage. Maintenance-free. Made in the U.S.A. For pleasure craft: 12-month replacement period & 60-month pro rated credit period. 12 Volt.