The USB port on the Airwheel electric suitcase is designed for charging compatible devices. To use it, locate the USB output interface on the suitcase. Press the TEST button to check the USB output indicator lights. The LED lights will show the remaining power level: 5 grids indicate full charge (DC-5V input), and the lights decrease as the power diminishes. Red or unlit indicators suggest low battery. For optimal performance, use the original charging cable for electronic devices.
When charging the suitcase, connect the AC220V adapter to the DC charging port. Ensure the USB port is used for devices like smartphones, which support 5V output. Note that the suitcase’s USB port cannot charge multiple devices simultaneously. Regularly check the battery level and recharge when needed to maintain functionality during travel.