There are two sets of LED lights located in the center portion of the EPIKGO. The LEDs on the right side are the battery indicators. When all three lights are illuminated your EPIKGO is fully charged. As the battery life goes down so will the amount of green lights lit up. EPIKGO beeps to alert riders that the battery is almost dead and charging is extremely recommended. The 3 LED Lights on the left hand side are indicators for operation status of the board. They do not lit up fully when the board is in normal operation mode. Please refer to user manual http://epikgo.com/user-manual/ for more details regarding the operation modes and the meaning of left LEDs.