... prolong the batteries’ life.It has full self protection, protection of overload, short circuit, reverse connection, over charging and over discharging ... “+” and “-“ to “-“.Connecting the DC load to the load terminals of the charge, take care of the “+” and “-“ of the DC output.If the panel ... from “0” to “F”, every figure indicates the timer of the load, for example, if you change the digital as “3”, ...