Product Introduction: 1.Intelligent electricity quantity display board;slightly push trigger switch,it will auto power off after 3 seconds display 2.Static power consumption 2.3MA,and it can be disregarded 3.Plug-in indicator light color:25% red,other 3 pcs are green 4.Application Fields:battery electricity quantity detecting;only needs to connect seperately battery's positive and negative with electricity quantity board's positive and negative;slightly push trigger switch,then it can be able to detect current electricity quantity.4 LEDs will divide battery comprehensive capacity into 4 phases;slightly push the switch,electricity quantity will be shown electricity display indication:25% first light is on(voltage:6.6V);50% second light is on (voltage:7V);75% third light is on (voltage:7.5V);100% fourth light is on (voltage:8V) 5.Size:44*9*7.5mm