Battery Tender Plus Charger High Efficiency Features: 120Vac 60 Hz input 12V, 1.25-Amp output 6-ft AC power cord 4.5-ft DC output cord Charger automatically switches to Float Mode when fully charged Designed to charge Agm, sealed maintenance-free, lead calcium and flooded batteries California Energy Commission approved Four-step charging program: Initialization, Bulk Charge, Absorption Mode and Float Mode Spark proof Temperature compensated Short circuit and reverse polarity protected 72-hour safety timer Five-year manufacturer's warranty