Battery Tender 021-0128 12-Volt 1.25-Amp Battery Charger

Temperature compensated to ensure optimum charge voltage according to ambient temperature; Automatically switches from full charge to float charging mode; Charges as fast or faster than 3A charger; Reverse-polarity protection to ensure user safety; Red & green indicator lights; Complete 4-step charging program; Includes quick-connect ring terminal harness for hard-to-reach areas & alligator clips for an alternate connection; 10-year warranty;