Hello, if the left ear of the headset can not be charged, you can try the following methods to solve the problem:
1. Clean the contact points: Dip a cotton swab into a small amount of alcohol or detergent and gently wipe the charging contact points in the earphone compartment to ensure that there is no dust or dirt affecting the charging.
2. Replace the charging cable or adapter: Try to use other charging cables and adapters to charge to determine whether it is the problem of the cable or adapter.
3. Restart the headset: Take the headset out of the headset, and follow the instructions to restart the headset, and then try to charge.
4. Contact after-sales service: If the above methods are ineffective, it may be the fault of the headset itself, it is recommended to contact after-sales service or brand customer service to seek further help or repair.
I think it's because the earphones are broken, so they can't charge.