The label on the back of the unit summarizes the meaning of the different colors for the LED that is next to the USB connector. This table details the other possible combinations and their meaning
| LED Color | Meaning |
| GRN steady | Power On |
| GRN/RED blinking | Low Battery |
| YEL/GRN blinking | Charging OK |
| YEL/RED blinking | Charging/Power Low |
| YEL steady | Battery Charged |
| BLU steady | Error (Fuel Gauge) |
| RED steady | Error (Battery) |
| WHT steady | Saving Data |