¡¾Protection Tool¡¿Equipped with device to avoid overcharge, over release, short circuit, over loading and solar battery inversely connecting ¡¾Correct discharge control¡¿Use the battery discharge rate characteristics to correct discharge control ¡¾Circuit of tandem type ¡¿Solar charger controller adopts PWM main charging circuit of tandem type to effectively improve charging efficiency ¡¾LED indicator¡¿The LED indicator shows the batteries current situation to make the customer get the information of the batteries ¡¾Three operating modes ¡¿Three operating modes can be selected: normally open mode, the pure light control mode and light control plus timing mode