Looks like the rubber band that goes around the ear buds prevents proper contact with the charging pins.
Both ear pieces won't charge now after a year of use. But if you take the rubber band off and place them in one at a time and the red light displays you can see if it is the rubber band causing the problem.
It looks like the charging position is quite finicky. I seem to recall they had spare rubber bands in the box.
If you are still experiencing these symptoms after the troubleshooting provided, we would recommend a service repair. You can use the following link to find a list of service centers in the U.S. that can do the repair: http://www.samsung.com/us/support/service/location or by contacting customer support at 1-800-726-7864.
