BENTON BX-4 is a smart, 3-step fully automatic switch mode battery charger and maintainer, designed for charging a variety of SLA (sealed lead acid) batteries, widely used in motorbikes, cars, vintage cars and snowmobiles. The batteries may be of various types i.e. WET/Flooded, GEL, AGM batteries capacity from 6V/1.2 Ah to 6V/20 Ah and 12V/1.2 Ah to 12V/20 Ah. The BX-4 recovers slightly sulfated batteries and rescues drained battery. It provides trickle charge and maintenance charging which increase battery life and gives superb performance. It is also ideal for maintaining batteries of non-regularly used vehicles of all types.