Answer to "JBL JB55 when I charge it, it works but when it's not, don't function"Hi! I know It’s an old threath but… Whatever. The model it’s not “known” becouse it’s a counterfit model. The problem, as the guy above said, it’s your batery, I’ve been selling these headphones for a while and it happens a lot! Hope you manage to repair them in these 2 years!