Four step, fully automatic switch mode model. Charges lead-acid batteries (Wet, MF, Gel and AGM) from 2Ah to 90Ah. Pulse recover of slightly sulphated batteries. Three unique charging modes for use on small batteries, large batteries and a special cold mode that is also suitable for AGM batteries. Comes with two interchangeable connection leads, one with clamps, and one with eyelet terminals. The charger can be connected for months, ideal for seasonal vehicles.