I am not surprise. RadPower has a very poor costumer services. It takes the a long time to respond unless yiu are buying. Also, they pretend to investigate your issue just to tell you that based on the photos, it is your fault and not the item. I had a bad experience with the battery which was jour a year old and only 1300 miles. The battery suddenly stopped charging with no warning. RadPower response was that I ws responsible and indirectly blamed me for not taking care of the battery.