Please make sure that your battery is real full charged.(Once fully charged, the USB charger will display a green light, and the LED light on battery will turn off.) Press button 5 times in succession in 2 seconds. The LED will blink 3 times (both blue and orange lights) and the button will illuminate Blue when active and ON.
Cf vv+
Press button 5 times in succession in 2 seconds. The LED will blink 3 times (both blue and orange lights) and the button will illuminate Blue when active and ON.