The JUNXY intelligent battery charger covers three charging processes: (1)Constant current charging → (2)Constant voltage with decreasing current charging→ (3)micro current floating charging. Auto shut-down when reach any one of four charge cutt-off settings: (1)cell voltage, (2)charge duration, (3)charge capacity, (4)manual stop charge. It is especially designed for battery bank maintenance for different industries with nominal voltages: 24V, 36V, 48V, 80V, 96V, 110V/120V, 220V/240V, 380V etc with different charging current.