Charging cannot be done.
- Make sure the headset is stored securely in the charging case.
- Make sure to set the left and right headset units correctly into the charging case.
- Be sure to use the supplied USB Type-C cable and check that the cable is firmly connected to the charging case.
- If the fitting supporters are not properly attached to the headset, the headset may not be charged with the supplied charging case. Check that the fitting supporters are attached properly when you set the headset into the charging case.
- When the charging ports of the headset or the charging case get dirty, the headset may not be charged. Clean the charging ports with a soft dry cloth.
- It is recommended to charge in a place with an ambient temperature between 15 °C and 35 °C (59 °F - 95 °F). Efficient charging may not be possible beyond this range.
- While charging, be sure to keep the lid of the charging case closed to prevent the battery of the charging case from being wasted.
- Reset the headset.
- Initialize the headset, and pair the headset and the device again.
When charging with a USB AC adaptor
- Make sure that the USB AC adaptor is firmly connected to the AC outlet.
- When using a commercially available USB AC adaptor, use one capable of supplying an output current of 0.5 A (500 mA) or more.
When charging with a computer
- Check that the USB Type-C cable is firmly connected to the computer.
- Check that the computer is turned on. Wake the computer up if the computer is in standby (sleep) or hibernation mode.
- Check that the charging case and the computer are directly connected and not via a USB hub.
- There may be a problem with the USB port of the connected computer. Try connecting to another USB port on the computer if one is available.
- Update the OS of the computer.