- Allow up to two hours to fully charge the battery. A full charge powers the headphones for up to 10 hours
- Make sure the USB connector on the cable is correctly aligned with the USB connector on the headphones
- Disconnect the USB charging cable on both ends and reconnect
- If your headphones have been exposed to high or low temperatures, let the headphones return to room temperature and then try charging again
- Try using a different power source to charge the headphones
- Before charging, be sure the headphones are at room temperature, between 5° C (41° F) and 40° C (104° F)
Headphones don't charge