If your Bluetooth headphones cannot be charged, there may be a loose connection or the battery may need to be replaced.
Try the following steps to troubleshoot the issue:
- Make sure to use the supplied USB cable. The headphones may not charge if another USB cable is used.
- Verify that the USB cable is firmly connected to both the headset jack and the USB port on the computer or power adaptor.
- Make sure that the USB cable is connected directly to the USB port on the computer or power adaptor and not through a USB hub. Charging will not be completed with an indirect connection.
- If possible, try plugging the USB cable into a different USB port in the computer or a different power adaptor.
- Make sure that the power for the computer or power adaptor is turned on.
- Verify that the computer is not in standby or hibernation mode. Charging will not be completed if the computer is set to these modes.
- If the headset is not used for a long time, the headset indicator may not light up when you connect the USB cable. Do not disconnect the USB cable. Wait a few minutes to see if the indicator lights up.
- If the product is not used for a long time, the battery may be depleted. The product should improve after recharging.
- The battery may need to be replaced if the life of the battery drops to half the normal length.
- 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.
If the issue is still unresolved, service may be required.