My Jabra elite sport does not charge and green light in the box is always on

SOURCE: Jabra BT650 won't turn on. green light blinks only

For a while I was not able to figure out how to turn the Jabra Halo headset on. What you need to do is unfold the headset and then push the hinged portion into itself, which will lock it in place so that it will no longer hinge for the time being.

SOURCE: Jabra BT2080 - been working

This problem is mostly associated with the battery of your device. In some cases, the battery is most likely to have expended it's lifespan.
In this case, all you need to do is to change the battery. It is advised that you get a professional to change the battery for you as trying to do this yourself could lead to a damage in the device.

SOURCE: jabra sport will not charge

Same problem did you call the 800 number?

Testimonial: "I did call and they sent me a new headset. I have not had a problem with the new one. "