The connected USB device does not charge.

Check the following if the USB device such as smartphone connected to the Bluetooth speaker does not charge:

IMPORTANT: Each of these steps represents a possible solution to this issue. Check if the connected USB device is charging after completing each step.

1. Make sure that the USB device is securely connected to the USB-A port of the Bluetooth speaker.
   
   NOTE:
   • The USB device will not charge when connected to the USB-B port of the Bluetooth speaker.
   • Not all speakers have USB-A or USB-B port. For details on the port that you can charge a USB device, refer to the manual supplied with the product.
     
     
2. An unsupported USB device is connected. For details, check the list of  compatible USB devices .

NOTE: It is recommended to charge the USB device while the speaker is connected to a power outlet using the AC adapter. If the AC adaptor is not connected, the connected USB device may not be charged.