BATTERY CHARGER It auto detects battery volts and outputs desired charging voltage and current, then auto switch to trickle charge after reaching full battery capacity. Specially designed for 6V/12V battery, charging current 1-4A ladder charging. WIDELY COMPATIBLE Suitable for both 6V and 12V batteries.It works with Calcium,AGM,EFB,MF, FLOODED, VRLA,SLA and Wet batteries, it can be used for the batteries in car motorcycles, lawnmowers, ATVs, lawn tractors, trucks, SUVs, boats, PWCs, classic cars, and more. NOT FOR LITHIUM BATTERY LCD SCREEN Using a backlit LCD display, clearly and visibly displays charging voltage, current, battery type, charging mode, and the percentage of power remaining. Allow quick and easy to use the trickle charger in the dark or at night.