The 3.7 v battery 4 paragraph power indicator

1,onboard high precision voltage detection chip and power supply voltage chip

2,onboard four power indicator LED lights, three kinds of color display, red, yellow, yellow, green, representing 20%, 50%, 80%, 100% of the battery

3,set aside a battery testing interface and two positioning hole

4,PCB size: 22.2 (mm) x17.2 (mm)