Dear NJ15.
I have exactly the same problem described by Texasguy817 when I charge this headphones it is supposed battery is charging but as soon I disconnect it from charger it can start, there is no charge on battery. Previously a friend of mine told me that this product was sold by Microsoft/Nokia from 2012 to 2014 and maybe a battery replacement could fix the issue.
Does anybody know how to repair this product? Could somebody repair this issue by doing something?
Kind regards.