When the battery level is above 3.8V, the LED light will be blue only, when the battery level is between 3.5V and 3.8V, the light will be a mixed color of blue and orange; the orange light means the battery level is below 3.5V.
When the battery level is above 3.8V, the LED light will be blue only, when the battery level is between 3.5V and 3.8V, the light will be a mixed color of blue and orange; the orange light means the battery level is below 3.5V.