My fitbit sense charges intermittently. IMHO, the pins on the charger and the holes on the back of the watch are misaligned. I've found that it doesn't matter what plug you use. I'm able to get the watch to charge if I hang the cable from something when it is attached to to watch. Does your watch show the charging green ring when it first makes contact? And then does nothing or flips between the charge screen and your watch face repeatedly?
