I don't have rechargeables in my jbl, just the alkaline batteries that came with it and my jbl didn't freeze up; it just shut off; and continued to shut off every time I turned it on. This happened after I had it connected to my computer and was downloading books to the sd card. I think when I removed the batteries and then reinstalled them, it reset itself. Now all seems to be fine. I am not totally secure with the fact that it won't happen again. If it does, hopefully removing the batteries will solve the problem again. Hubby wants to keep it, so we are not returning it. Don't know if that is the right or wrong decision.
