When a lipo is plugged into a Thunderbird 9 ESC, it is supposed to beep 2 or 3 times depending on the number of cells it "sees" in the battery pack. When I plug my lipo in, it beeps 5 times, thus setting the cut off voltage to something I don't know about. I need to know why this is before I fly because I don't want to damage my lipo due to a wrong cut off voltage. Help?