This
might be a worthwhile read and see if it helps you out.
It's a Steelseries Arctis Seven and when it is done charging, it is on a blinking yellow suggesting it needs to be charged still.
Seems to me like the battery is saying goodbye.
I'm hoping the solution isn't to buy a new headset because the headset works fine otherwise, but I know that's how products are built now.
If you yet have warranty on the headset, you should contact Steelseries and see if you can initiate an RMA, besides expending precious time(from said RMA period) or you could go the DIY route and replace the battery yourself or find a shop local to you and see if they can replace the battery.
Moved thread from Computer Peripherals section to Home Audio & Theater section.