Battery charge indicator circuits are very useful modules for efficient use of the Li batteries. These kind of indicators generally measures the voltage in the battery and indicate the charge by turning up any appropriate LED’s.

1.onboard high-precision voltage detection chip and power regulator chip

2.onboard 4-bit power indicator LED lights, divided into three colors, red, yellow, yellow and green represent 20%, 50%, 80%, 100% of the electricity

3.set aside a battery detection interface and two mounting holes

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