2. It may be the problem of the headset itself, such as battery damage or charging line failure, or it may be the use of incorrect methods, such as not correctly connected charging cable or insufficient charging time.
3. If the problem is the headset itself, it is recommended to contact the after-sales service or replace the battery; If the use method is not correct, it is recommended to read the instructions carefully or consult after-sales service to ensure correct charging.
Most likely the Bluetooth battery is damaged.Get the Bluetooth after-sales to check and repair.