How to fix JBLTUNE760 NC not charging

I've been struggling with my battery not working in these headphones for months and I finally found a solution. If this is the first time it has happened normally turning in on then charging them while they are still on seems to do the trick. You can follow this video to troubleshoot.

However if nothing worked/your headphones are dead the best option is to remove the headphone covers, then disconnect and reconnect the battery jack. The battery jack is inside the left earphone cup (you can see the white box near the battery in the video) and should be easy to unplug and replug.

Afterwards I just charged it till the red-light went off and then slipped the covers back on, now the battery seems to be working normally but I will update if issues persist. The only thing I've ever repaired in my life is a old coffee maker so you should be able to do this pretty easily lol