rollsroycecafe_36143 check your AC adapter and make sure that it has proper output. Then check the charging cable, making sure that there are no bend pins etc. After that, check the charging port. Same thing, no bend pins corrosion or debris inside the connector. If all that checks out, you will have to disassemble your headphones and check the charging port on the board and might as well change the battery. Then re-evaluate.