Intelligent electricity quantity display board; slightly push trigger switch, it will auto power off after 3 seconds display.
Display indication: 25% first light is on(voltage:3.4V); 50% second light is on (voltage:3.6V); 75% third light is on (voltage:3.8V); 100% fourth light is on (voltage:4V).
The intelligent power display panel
Static power consumption 2~3 mA, It’s negligible
Power indication(The color of the lamp is green)
1 x 1S 18650 12V Lithium Battery Capacity Indicator Module Percent Power Level Tester LED Display Board